/*
 * bytege.space — единая дизайн-система (PROJECT_SPEC.md Часть 6, п.85-89;
 * project_docs/02_design_system.md).
 *
 * Один файл на весь проект, без npm-сборки. Секции идут в порядке каскада:
 * переменные → сброс → типографика → layout → компоненты → адаптивность.
 *
 * Стороннее (Monaco, KaTeX, project_docs/02_design_system.md "Сторонние UI-
 * зависимости"): здесь нет ни одного широкого селектора вида `div`/`span`/`*`,
 * который мог бы просочиться в разметку вендоров, поэтому их контейнеры
 * (`.editor-shell`, `.katex-demo` и т.п.) не переопределяются — этого
 * достаточно для изоляции без дополнительного CSS-сброса внутри них.
 */

/* ---------- 0. Self-hosted fonts (static/fonts/, OFL) ---------- */

/* Plus Jakarta Sans variable — UI (latin / latin-ext / cyrillic-ext; OFL) */
@font-face {
  font-family: "Plus Jakarta Sans";
  font-style: normal;
  font-display: swap;
  font-weight: 200 800;
  src: url("../fonts/plus-jakarta-sans/plus-jakarta-sans-cyrillic-ext-wght-normal.woff2") format("woff2-variations");
  unicode-range: U+0460-052F, U+1C80-1C8A, U+20B4, U+2DE0-2DFF, U+A640-A69F, U+FE2E-FE2F;
}
@font-face {
  font-family: "Plus Jakarta Sans";
  font-style: normal;
  font-display: swap;
  font-weight: 200 800;
  src: url("../fonts/plus-jakarta-sans/plus-jakarta-sans-latin-ext-wght-normal.woff2") format("woff2-variations");
  unicode-range: U+0100-02BA, U+02BD-02C5, U+02C7-02CC, U+02CE-02D7, U+02DD-02FF, U+0304, U+0308, U+0329, U+1D00-1DBF, U+1E00-1E9F, U+1EF2-1EFF, U+2020, U+20A0-20AB, U+20AD-20C0, U+2113, U+2C60-2C7F, U+A720-A7FF;
}
@font-face {
  font-family: "Plus Jakarta Sans";
  font-style: normal;
  font-display: swap;
  font-weight: 200 800;
  src: url("../fonts/plus-jakarta-sans/plus-jakarta-sans-latin-wght-normal.woff2") format("woff2-variations");
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}

/* JetBrains Mono variable — editor / console (normal + italic) */
@font-face {
  font-family: "JetBrains Mono";
  font-style: normal;
  font-display: swap;
  font-weight: 100 800;
  src: url("../fonts/jetbrains-mono/jetbrains-mono-cyrillic-wght-normal.woff2") format("woff2-variations");
  unicode-range: U+0301, U+0400-045F, U+0490-0491, U+04B0-04B1, U+2116;
}
@font-face {
  font-family: "JetBrains Mono";
  font-style: normal;
  font-display: swap;
  font-weight: 100 800;
  src: url("../fonts/jetbrains-mono/jetbrains-mono-latin-ext-wght-normal.woff2") format("woff2-variations");
  unicode-range: U+0100-02BA, U+02BD-02C5, U+02C7-02CC, U+02CE-02D7, U+02DD-02FF, U+0304, U+0308, U+0329, U+1D00-1DBF, U+1E00-1E9F, U+1EF2-1EFF, U+2020, U+20A0-20AB, U+20AD-20C0, U+2113, U+2C60-2C7F, U+A720-A7FF;
}
@font-face {
  font-family: "JetBrains Mono";
  font-style: normal;
  font-display: swap;
  font-weight: 100 800;
  src: url("../fonts/jetbrains-mono/jetbrains-mono-latin-wght-normal.woff2") format("woff2-variations");
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}
@font-face {
  font-family: "JetBrains Mono";
  font-style: italic;
  font-display: swap;
  font-weight: 100 800;
  src: url("../fonts/jetbrains-mono/jetbrains-mono-cyrillic-wght-italic.woff2") format("woff2-variations");
  unicode-range: U+0301, U+0400-045F, U+0490-0491, U+04B0-04B1, U+2116;
}
@font-face {
  font-family: "JetBrains Mono";
  font-style: italic;
  font-display: swap;
  font-weight: 100 800;
  src: url("../fonts/jetbrains-mono/jetbrains-mono-latin-ext-wght-italic.woff2") format("woff2-variations");
  unicode-range: U+0100-02BA, U+02BD-02C5, U+02C7-02CC, U+02CE-02D7, U+02DD-02FF, U+0304, U+0308, U+0329, U+1D00-1DBF, U+1E00-1E9F, U+1EF2-1EFF, U+2020, U+20A0-20AB, U+20AD-20C0, U+2113, U+2C60-2C7F, U+A720-A7FF;
}
@font-face {
  font-family: "JetBrains Mono";
  font-style: italic;
  font-display: swap;
  font-weight: 100 800;
  src: url("../fonts/jetbrains-mono/jetbrains-mono-latin-wght-italic.woff2") format("woff2-variations");
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}

/* ---------- 1. Переменные ---------- */

:root {
  color-scheme: light;

  /* Brand green */
  --color-accent: #45b878;
  --color-accent-hover: #3aa56a;
  --color-accent-from: #5fd68f;
  --color-accent-to: #3aa56a;
  --color-accent-tint: #e1f3e8;
  --gradient-accent: linear-gradient(135deg, var(--color-accent-from), var(--color-accent-to));

  /* Surfaces */
  --color-bg: #ffffff;
  --color-bg-secondary: #f7faf8;
  --color-bg-tertiary: #e1f3e8;
  --color-bg-page: linear-gradient(135deg, #e9f5ef 0%, #f6f0e8 48%, #efeaf3 100%);
  --color-chrome: rgba(247, 250, 248, 0.82);
  --color-chrome-sidebar: rgba(247, 250, 248, 0.78);
  --color-card-border: rgba(255, 255, 255, 0.85);
  --color-on-accent: #ffffff;
  --color-ghost-fg: #3aa56a;
  --color-ghost-hover: #d3ecdf;
  --color-lock-bg: #d9e4dd;
  --color-switch-off: rgba(31, 45, 90, 0.16);
  --color-switch-knob: #ffffff;

  /* Text (navy) */
  --color-text: #1f2d5a;
  --color-text-secondary: #6b7590;
  --color-text-tertiary: #8a93a8;

  /* Semantic + tile accents */
  --color-success: #45b878;
  --color-warning: #f68b1f;
  --color-error: #f14b6b;
  --color-coral: #f14b6b;
  --color-orange: #f68b1f;
  --color-purple: #a834dc;
  --color-blue: #3aa0e8;
  --color-yellow: #f8cc50;
  --color-coral-bg: rgba(241, 75, 107, 0.13);
  --color-coral-fg: #f14b6b;
  --color-orange-bg: rgba(246, 139, 31, 0.15);
  --color-orange-fg: #f68b1f;
  --color-purple-bg: rgba(168, 52, 220, 0.12);
  --color-purple-fg: #a834dc;
  --color-blue-bg: rgba(58, 160, 232, 0.13);
  --color-blue-fg: #3aa0e8;
  --color-yellow-bg: rgba(248, 204, 80, 0.28);
  --color-yellow-fg: #9a7a12;
  --color-verdict-ok-bg: rgba(52, 199, 89, 0.1);
  --color-verdict-ok-fg: #1c8b3c;
  --color-verdict-err-bg: rgba(255, 59, 48, 0.1);
  --color-verdict-err-fg: #c8281f;
  --color-verdict-warn-bg: rgba(255, 149, 0, 0.1);
  --color-verdict-warn-fg: #b26b00;
  --color-on-yellow: #1f2d5a;

  --color-border: #dce8e1;
  --color-border-light: #e8f0eb;

  --font-family: "Plus Jakarta Sans", system-ui, -apple-system, "Segoe UI",
    Roboto, "Helvetica Neue", Arial, sans-serif;
  --font-mono: "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, Consolas,
    monospace;

  /* Code editor / console (soft-green light surfaces) */
  --color-code-bg: #f4f8f6;
  --color-code-bg-deep: #eef4f1;
  --color-code-text: #1f2d5a;
  --scroll-thumb: rgba(31, 45, 90, 0.28);
  --scroll-thumb-hover: rgba(69, 184, 120, 0.55);

  --radius-sm: 12px;
  --radius-md: 16px;
  --radius-lg: 24px;
  --radius-pill: 9999px;

  --shadow-sm: 0 4px 16px rgba(31, 45, 90, 0.05);
  --shadow-md: 0 12px 32px rgba(31, 45, 90, 0.07);
  --shadow-lg: 0 18px 48px rgba(31, 45, 90, 0.10);

  --transition-fast: 150ms ease;
  --transition-base: 220ms cubic-bezier(0.4, 0, 0.2, 1);

  --header-height: 80px;
  --sidebar-width: 260px;
  --chrome-gap: 20px;
  --content-max-width: 1200px;
}

/* Dark theme — tokens from design_preview_new/student_dashboard_soft_black.html.
   Layout/skeleton unchanged; only surfaces, text, chrome and tints flip. */
html[data-theme="dark"] {
  color-scheme: dark;

  --color-accent-tint: rgba(95, 214, 143, 0.15);
  --color-bg: #151f2e;
  --color-bg-secondary: #1a2534;
  --color-bg-tertiary: rgba(95, 214, 143, 0.15);
  --color-bg-page: linear-gradient(135deg, #0b1512 0%, #0e1522 45%, #140f21 100%);
  --color-chrome: rgba(15, 23, 34, 0.86);
  --color-chrome-sidebar: rgba(15, 23, 34, 0.78);
  --color-card-border: rgba(255, 255, 255, 0.06);
  --color-ghost-fg: #7ce9b0;
  --color-ghost-hover: rgba(95, 214, 143, 0.22);
  --color-lock-bg: #233144;
  --color-switch-off: rgba(232, 239, 247, 0.16);
  --color-switch-knob: #e8eff7;

  --color-text: #e8eff7;
  --color-text-secondary: #9fb0c3;
  --color-text-tertiary: #64748b;

  --color-coral-bg: rgba(241, 75, 107, 0.16);
  --color-coral-fg: #ff8fa3;
  --color-orange-bg: rgba(246, 139, 31, 0.16);
  --color-orange-fg: #ffc38a;
  --color-purple-bg: rgba(168, 52, 220, 0.18);
  --color-purple-fg: #d9a6f5;
  --color-blue-bg: rgba(58, 160, 232, 0.16);
  --color-blue-fg: #8fd0fa;
  --color-yellow-bg: rgba(248, 204, 80, 0.16);
  --color-yellow-fg: #ffd37a;
  --color-verdict-ok-bg: rgba(95, 214, 143, 0.14);
  --color-verdict-ok-fg: #7ce9b0;
  --color-verdict-err-bg: rgba(241, 75, 107, 0.16);
  --color-verdict-err-fg: #ff8fa3;
  --color-verdict-warn-bg: rgba(246, 139, 31, 0.16);
  --color-verdict-warn-fg: #ffc38a;

  --color-border: #233144;
  --color-border-light: rgba(35, 49, 68, 0.8);

  --color-code-bg: #0f1722;
  --color-code-bg-deep: #0b131c;
  --color-code-text: #e8eff7;
  --scroll-thumb: rgba(232, 239, 247, 0.28);
  --scroll-thumb-hover: rgba(69, 184, 120, 0.55);

  --shadow-sm: 0 4px 16px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 12px 32px rgba(0, 0, 0, 0.35);
  --shadow-lg: 0 18px 44px rgba(0, 0, 0, 0.5);
}

/* ---------- 2. Сброс ---------- */

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  background: var(--color-bg-page);
  background-attachment: fixed;
  color: var(--color-text);
  font-family: var(--font-family);
  font-size: 16px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

img,
svg {
  max-width: 100%;
  display: block;
}

a {
  color: var(--color-accent);
  text-decoration: none;
  transition: color var(--transition-fast);
}

a:hover {
  color: var(--color-accent-hover);
}

button {
  font-family: inherit;
}

ul,
ol {
  padding-left: 1.25em;
}

/* ---------- 3. Типографика ---------- */

h1,
h2,
h3,
h4 {
  margin: 0 0 0.5em;
  font-weight: 600;
  letter-spacing: -0.02em;
  color: var(--color-text);
}

h1 {
  font-size: 2rem;
  font-weight: 700;
}

h2 {
  font-size: 1.5rem;
}

h3 {
  font-size: 1.2rem;
}

p {
  margin: 0 0 1em;
  color: var(--color-text);
}

.text-secondary {
  color: var(--color-text-secondary);
}

.text-tertiary {
  color: var(--color-text-tertiary);
}

small,
.text-small {
  font-size: 0.85rem;
}

/* ---------- 4. Layout ---------- */

.app-shell {
  display: flex;
  align-items: flex-start;
  justify-content: center;
  gap: var(--chrome-gap);
  min-height: 100vh;
  padding: var(--chrome-gap);
}

.app-column {
  flex: 0 1 var(--content-max-width);
  width: 100%;
  max-width: var(--content-max-width);
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: var(--chrome-gap);
}

.app-header {
  position: relative;
  z-index: 40;
  flex-shrink: 0;
  display: flex;
  align-items: center;
  flex-wrap: nowrap;
  gap: 16px;
  height: var(--header-height);
  min-height: var(--header-height);
  padding: 0 20px;
  background: var(--color-chrome);
  backdrop-filter: saturate(180%) blur(18px);
  -webkit-backdrop-filter: saturate(180%) blur(18px);
  border: 1px solid var(--color-card-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
}

.app-header__logo {
  display: flex;
  align-items: center;
  flex-shrink: 0;
  line-height: 0;
}

.app-header__logo img,
.app-sidebar__brand img {
  display: block;
  height: 34px;
  width: auto;
}

.app-header__titles {
  flex: 1;
  min-width: 0;
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 1px;
}

.app-header__title {
  margin: 0;
  font-size: 1.05rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.25;
  color: var(--color-text);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.app-header__date {
  margin: 0;
  font-size: 0.78rem;
  font-weight: 500;
  line-height: 1.3;
  color: var(--color-text-secondary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.app-header__menu-toggle {
  display: none;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border: none;
  border-radius: var(--radius-sm);
  background: transparent;
  cursor: pointer;
}

.app-header__menu-toggle span,
.app-header__menu-toggle span::before,
.app-header__menu-toggle span::after {
  display: block;
  width: 18px;
  height: 2px;
  background: var(--color-text);
  border-radius: 2px;
  position: relative;
  transition: transform var(--transition-fast);
}

.app-header__menu-toggle span::before {
  content: "";
  position: absolute;
  top: -6px;
}

.app-header__menu-toggle span::after {
  content: "";
  position: absolute;
  top: 6px;
}

.app-header__actions {
  display: flex;
  align-items: center;
  flex-shrink: 0;
  gap: 12px;
}

.app-header__compiler {
  gap: 6px;
  white-space: nowrap;
}

@media (max-width: 640px) {
  :root {
    --header-height: 56px;
    --chrome-gap: 12px;
  }

  .app-header {
    gap: 8px;
    padding: 0 10px;
  }

  .app-header__logo img,
  .app-sidebar__brand img {
    height: 26px;
  }

  .app-header__title {
    font-size: 0.95rem;
  }

  .app-header__date {
    display: none;
  }

  .app-header__actions {
    gap: 6px;
    min-width: 0;
  }

  .app-header__compiler {
    width: 36px;
    height: 36px;
    padding: 0;
    gap: 0;
    border-radius: 50%;
  }

  .app-header__compiler-label {
    display: none;
  }

  .theme-toggle {
    width: 52px;
    height: 32px;
  }

  .profile-menu__trigger {
    padding: 2px;
  }
}

.icon-btn {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  padding: 0;
  border-radius: 50%;
  border: 1px solid transparent;
  background: transparent;
  color: var(--color-text-secondary);
  cursor: pointer;
  transition: background var(--transition-fast);
}

.icon-btn:hover {
  background: var(--color-bg-secondary);
}

/* Theme switch: mint pill like .btn-ghost + sliding thumb like .cal-seg. */
.theme-toggle {
  position: relative;
  display: grid;
  grid-template-columns: 1fr 1fr;
  align-items: center;
  flex: none;
  width: 68px;
  height: 36px;
  padding: 3px;
  border: 1px solid transparent;
  border-radius: var(--radius-pill);
  background: var(--color-accent-tint);
  color: var(--color-ghost-fg);
  cursor: pointer;
  transition: background var(--transition-fast), border-color var(--transition-fast),
    box-shadow var(--transition-fast), transform var(--transition-fast);
}

.theme-toggle__knob {
  position: absolute;
  top: 3px;
  left: 3px;
  z-index: 0;
  width: calc((100% - 6px) / 2);
  height: calc(100% - 6px);
  border-radius: var(--radius-pill);
  background: var(--color-bg);
  box-shadow: var(--shadow-sm);
  pointer-events: none;
  transition: transform var(--transition-base), background var(--transition-fast);
}

html[data-theme="dark"] .theme-toggle__knob {
  transform: translateX(100%);
}

.theme-toggle__icon {
  position: relative;
  z-index: 1;
  display: block;
  margin: auto;
  color: var(--color-text-tertiary);
  pointer-events: none;
  transition: color var(--transition-fast);
}

.theme-toggle [data-theme-icon="sun"] {
  color: var(--color-ghost-fg);
}

html[data-theme="dark"] .theme-toggle [data-theme-icon="sun"] {
  color: var(--color-text-tertiary);
}

html[data-theme="dark"] .theme-toggle [data-theme-icon="moon"] {
  color: var(--color-ghost-fg);
}

.theme-toggle:hover {
  background: var(--color-ghost-hover);
  border-color: rgba(69, 184, 120, 0.35);
}

.theme-toggle:hover .theme-toggle__knob {
  background: var(--color-bg);
  box-shadow: 0 6px 14px rgba(69, 184, 120, 0.18);
}

.theme-toggle:active {
  transform: scale(0.97);
}

.theme-toggle:focus {
  outline: none;
}

.theme-toggle:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
}

@media (prefers-reduced-motion: reduce) {
  .theme-toggle,
  .theme-toggle__knob,
  .theme-toggle__icon {
    transition: none;
  }
}

.icon-btn[aria-disabled="true"] {
  cursor: not-allowed;
  color: var(--color-text-tertiary);
  opacity: 0.6;
}

.icon-btn__badge {
  position: absolute;
  top: 2px;
  right: 2px;
  min-width: 16px;
  height: 16px;
  padding: 0 4px;
  border-radius: var(--radius-pill);
  background: var(--color-error);
  color: #fff;
  font-size: 0.65rem;
  line-height: 16px;
  text-align: center;
}

.app-sidebar {
  position: sticky;
  top: var(--chrome-gap);
  z-index: 30;
  flex-shrink: 0;
  display: flex;
  flex-direction: column;
  width: var(--sidebar-width);
  height: calc(100vh - (var(--chrome-gap) * 2));
  overflow: hidden;
  padding: 16px 12px 12px;
  background: var(--color-chrome-sidebar);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--color-card-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
}

.app-sidebar__brand {
  display: flex;
  align-items: center;
  flex-shrink: 0;
  padding: 4px 12px 16px;
  line-height: 0;
}

.app-sidebar__nav {
  flex: 1;
  min-height: 0;
  overflow-y: auto;
  margin-bottom: 0;
}

.nav-logout {
  margin: 0;
  padding: 0;
}

.nav-link--logout {
  width: 100%;
  border: none;
  background: transparent;
  cursor: pointer;
  font: inherit;
  text-align: left;
}

.app-main {
  flex: 1;
  min-width: 0;
  padding: 0;
}

.app-main__inner {
  width: 100%;
  max-width: none;
  margin: 0;
}

.app-footer {
  flex-shrink: 0;
  display: flex;
  align-items: center;
  min-height: var(--header-height);
  padding: 12px 20px;
  background: var(--color-chrome);
  backdrop-filter: saturate(180%) blur(18px);
  -webkit-backdrop-filter: saturate(180%) blur(18px);
  border: 1px solid var(--color-card-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  color: var(--color-text-tertiary);
  font-size: 0.85rem;
}

.app-footer__inner {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 24px;
  align-items: center;
  justify-content: space-between;
  width: 100%;
}

.app-footer__links {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 16px;
}

.app-footer__links a {
  color: var(--color-text-secondary);
  text-decoration: none;
}

.app-footer__links a:hover {
  color: var(--color-text);
}

/* Public / auth pages (login, установка пароля, ошибки) — отдельный каркас
 * без header/sidebar приложения (пользователь ещё не вошёл). */

.auth-shell {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
  background: var(--color-bg-page);
  background-attachment: fixed;
}

.auth-card {
  width: 100%;
  max-width: 420px;
  background: var(--color-bg);
  border: 1px solid var(--color-card-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  padding: 40px 36px;
}

.auth-card__logo {
  display: flex;
  justify-content: center;
  margin-bottom: 24px;
  line-height: 0;
}

.auth-card__logo img {
  display: block;
  height: 44px;
  width: auto;
}

.auth-card h1 {
  font-size: 1.4rem;
  text-align: center;
}

.auth-card__subtitle {
  margin: -8px 0 24px;
  text-align: center;
  color: var(--color-text-secondary);
  font-size: 0.88rem;
}

.auth-card__hint {
  margin-top: 20px;
  padding-top: 20px;
  border-top: 1px solid var(--color-border-light);
  color: var(--color-text-secondary);
  font-size: 0.85rem;
  text-align: center;
}

.error-shell {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
  text-align: center;
  background: var(--color-bg-page);
  background-attachment: fixed;
}

.error-shell__code {
  font-size: 5rem;
  font-weight: 700;
  background: var(--gradient-accent);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  margin: 0;
}

/* ---------- 5. Навигация (Sidebar) ---------- */

.nav-section {
  margin-bottom: 20px;
}

.nav-section__title {
  padding: 0 12px;
  margin-bottom: 6px;
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--color-text-tertiary);
}

.nav-link {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 9px 12px;
  border-radius: var(--radius-sm);
  color: var(--color-text);
  font-size: 0.92rem;
  font-weight: 500;
  transition: background var(--transition-fast), color var(--transition-fast), box-shadow var(--transition-fast);
}

.nav-link__icon {
  flex: none;
  display: grid;
  place-items: center;
  width: 18px;
  height: 18px;
  color: inherit;
}

.nav-link__icon svg {
  display: block;
}

.nav-link__text {
  min-width: 0;
  flex: 1;
}

.nav-link:hover {
  background: var(--color-bg);
  color: var(--color-text);
  box-shadow: var(--shadow-sm);
}

.nav-link.is-active {
  background: var(--color-bg);
  color: var(--color-accent);
  font-weight: 700;
  box-shadow: var(--shadow-sm);
}

.nav-link.is-active:hover {
  background: var(--color-bg);
  color: var(--color-accent);
  box-shadow: var(--shadow-sm);
}

.nav-link--disabled {
  color: var(--color-text-tertiary);
  cursor: default;
  pointer-events: none;
}

.nav-link__soon {
  flex: none;
  font-size: 0.65rem;
  font-weight: 600;
  padding: 2px 6px;
  border-radius: var(--radius-pill);
  background: var(--color-bg-secondary);
  color: var(--color-text-tertiary);
}

/* ---------- 6. Профильное меню ---------- */

.profile-menu {
  position: relative;
}

.profile-menu__trigger {
  display: flex;
  align-items: center;
  gap: 10px;
  border: 1px solid var(--color-border-light);
  background: var(--color-bg);
  box-shadow: var(--shadow-sm);
  cursor: pointer;
  padding: 4px 14px 4px 5px;
  border-radius: var(--radius-pill);
  transition: background var(--transition-fast), border-color var(--transition-fast),
    box-shadow var(--transition-fast);
}

.profile-menu__trigger:hover {
  background: var(--color-bg-secondary);
  border-color: rgba(69, 184, 120, 0.35);
}

.avatar {
  display: block;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  object-fit: cover;
  background: var(--color-bg);
  border: 2px solid var(--color-bg);
  box-shadow: 0 0 0 2px var(--color-accent-tint), var(--shadow-sm);
  flex: none;
  max-width: none;
}

.avatar--xs {
  width: 24px;
  height: 24px;
}

.avatar--sm {
  width: 32px;
  height: 32px;
}

.avatar--md {
  width: 42px;
  height: 42px;
}

.avatar--lg {
  width: 64px;
  height: 64px;
  border-width: 3px;
}

.avatar--xl {
  width: 92px;
  height: 92px;
  border-width: 4px;
}

.person {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  min-width: 0;
  max-width: 100%;
}

.person__name {
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
}

.form-checkbox-row--person {
  padding: 6px 0;
}

.profile-menu__name {
  display: none;
  font-size: 0.88rem;
  font-weight: 500;
  color: var(--color-text);
}

.profile-menu__dropdown {
  position: absolute;
  top: calc(100% + 8px);
  right: 0;
  min-width: 220px;
  background: var(--color-bg);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  padding: 8px;
  display: none;
  z-index: 50;
}

.profile-menu.is-open .profile-menu__dropdown {
  display: block;
}

.profile-menu__dropdown-header {
  padding: 8px 10px 10px;
  margin-bottom: 4px;
  border-bottom: 1px solid var(--color-border-light);
}

.profile-menu__dropdown-header strong {
  display: block;
  font-size: 0.9rem;
}

.profile-menu__dropdown a,
.profile-menu__dropdown button {
  display: block;
  width: 100%;
  text-align: left;
  padding: 8px 10px;
  border-radius: var(--radius-sm);
  border: none;
  background: transparent;
  color: var(--color-text);
  font-size: 0.88rem;
  cursor: pointer;
}

.profile-menu__dropdown a:hover,
.profile-menu__dropdown button:hover {
  background: var(--color-bg-secondary);
  color: var(--color-text);
}

/* ---------- 7. Кнопки ----------
 * Семантика:
 *   primary  — действие вперёд (Сохранить, Создать, Решать, Открыть, Назначить)
 *   secondary — нейтральное второе действие
 *   ghost    — мягкая навигация / «Все» / «К списку» (мятный тинт, как в soft-превью)
 *   cancel   — отмена (коралловый soft)
 *   danger   — разрушительное (Удалить, Отозвать, Заблокировать)
 */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 22px;
  border: 1px solid transparent;
  border-radius: var(--radius-pill);
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  transition: background var(--transition-fast), color var(--transition-fast),
    border-color var(--transition-fast), box-shadow var(--transition-fast),
    transform var(--transition-fast), filter var(--transition-fast);
  text-align: center;
}

.btn:active {
  transform: scale(0.98);
}

.btn-primary {
  background: var(--gradient-accent);
  color: #fff;
  box-shadow: 0 8px 18px rgba(69, 184, 120, 0.28);
}

.btn-primary:hover {
  filter: brightness(0.97);
  color: #fff;
}

.btn-secondary {
  background: var(--color-bg);
  color: var(--color-text);
  border-color: var(--color-border);
}

.btn-secondary:hover {
  background: var(--color-bg-secondary);
  border-color: var(--color-border);
  color: var(--color-text);
}

.btn-ghost {
  background: var(--color-accent-tint);
  border-color: transparent;
  color: var(--color-ghost-fg);
  font-weight: 800;
  font-size: 0.82rem;
  padding: 8px 16px;
}

.btn-ghost:hover {
  background: var(--color-ghost-hover);
  border-color: transparent;
  color: var(--color-ghost-fg);
}

.btn-sm.btn-ghost {
  font-size: 0.78rem;
  padding: 7px 14px;
}

.card__header .btn-ghost {
  font-size: 0.78rem;
  padding: 7px 14px;
}

.btn-cancel {
  background: rgba(241, 75, 107, 0.12);
  border-color: rgba(241, 75, 107, 0.28);
  color: var(--color-coral);
}

.btn-cancel:hover {
  background: rgba(241, 75, 107, 0.18);
  border-color: rgba(241, 75, 107, 0.4);
  color: var(--color-coral);
}

.btn-danger {
  background: var(--color-error);
  color: #fff;
  box-shadow: 0 8px 18px rgba(241, 75, 107, 0.25);
}

.btn-danger:hover {
  background: #de3f5d;
  color: #fff;
}

/* Links styled as buttons: keep button colors (override global `a` / `a:hover`). */
a.btn {
  text-decoration: none;
}

a.btn-primary,
a.btn-primary:hover,
a.btn-primary:focus {
  color: #fff;
}

a.btn-secondary,
a.btn-secondary:hover,
a.btn-secondary:focus {
  color: var(--color-text);
}

a.btn-ghost,
a.btn-ghost:hover,
a.btn-ghost:focus {
  color: var(--color-ghost-fg);
}

a.btn-cancel,
a.btn-cancel:hover,
a.btn-cancel:focus {
  color: var(--color-coral);
}

a.btn-danger,
a.btn-danger:hover,
a.btn-danger:focus {
  color: #fff;
}

.btn-block {
  display: flex;
  width: 100%;
}

.btn:disabled,
.btn[aria-disabled="true"] {
  opacity: 0.5;
  cursor: not-allowed;
  filter: none;
  box-shadow: none;
}

/* ---------- 8. Формы ---------- */

.form-group {
  margin-bottom: 18px;
}

.form-field {
  margin-bottom: 18px;
}

.form-field > label:not(.form-checkbox-label) {
  display: block;
  margin-bottom: 6px;
  font-size: 0.88rem;
  font-weight: 500;
  color: var(--color-text);
}

.form-label {
  display: block;
  margin-bottom: 6px;
  font-size: 0.88rem;
  font-weight: 500;
  color: var(--color-text);
}

.form-input,
textarea.form-input,
select.form-input {
  width: 100%;
  padding: 11px 14px;
  font-size: 0.95rem;
  font-family: inherit;
  color: var(--color-text);
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.form-input:focus {
  outline: none;
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px rgba(69, 184, 120, 0.22);
}

input[type="file"] {
  max-width: 100%;
}

code {
  overflow-wrap: anywhere;
  word-break: break-word;
}

h1 {
  overflow-wrap: anywhere;
}

.form-hint {
  margin-top: 6px;
  font-size: 0.8rem;
  color: var(--color-text-tertiary);
}

.form-error {
  margin-top: 6px;
  font-size: 0.8rem;
  color: var(--color-error);
}

.form-error-list {
  list-style: none;
  padding: 0;
  margin: 0 0 18px;
  border-radius: var(--radius-sm);
  background: rgba(255, 59, 48, 0.08);
  border: 1px solid rgba(255, 59, 48, 0.25);
  color: var(--color-error);
}

.form-error-list li {
  padding: 10px 14px;
  font-size: 0.88rem;
}

.form-checkbox-row {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 8px 0;
}

.form-checkbox {
  width: 18px;
  height: 18px;
  accent-color: var(--color-accent);
  flex-shrink: 0;
}

.form-checkbox-label {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 0.95rem;
  color: var(--color-text);
  cursor: pointer;
}

.form-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 8px;
}

form.is-readonly,
fieldset.is-readonly {
  opacity: 0.72;
  pointer-events: none;
}

/* ---------- Page hero (dashboards and list landings) ---------- */

.card.page-hero {
  position: relative;
  display: flex;
  align-items: center;
  gap: 20px;
  padding: 20px 24px;
  overflow: hidden;
  margin-bottom: 24px;
}

.page-hero__main {
  display: flex;
  flex-direction: column;
  justify-content: center;
  flex: 1;
  min-width: 0;
}

.page-hero__info {
  display: flex;
  align-items: center;
  gap: 20px;
  min-width: 0;
}

.page-hero__copy {
  min-width: 0;
}

.page-hero__title {
  margin: 0 0 6px;
  font-size: 1.5rem;
  font-weight: 800;
  letter-spacing: -0.03em;
  color: var(--color-text);
}

.page-hero__sub {
  margin: 0 0 14px;
  color: var(--color-text-secondary);
  font-weight: 600;
  font-size: 0.9rem;
  line-height: 1.45;
}

.page-hero__accent {
  color: var(--color-accent-to);
  font-weight: 800;
}

.page-hero__art {
  width: 340px;
  flex: none;
}

.page-hero__art img {
  display: block;
  width: 100%;
  height: auto;
  border-radius: 18px;
}

.page-hero--section .page-hero__info {
  align-items: flex-start;
}

.page-hero--dash .page-hero__title {
  margin-bottom: 14px;
}

.page-hero--section .page-hero__art {
  width: 280px;
}

.page-hero__pills {
  position: absolute;
  top: 14px;
  left: 16px;
  z-index: 1;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 6px;
  margin: 0;
  max-width: calc(100% - 32px);
}

@media (min-width: 961px) {
  .page-hero__pills {
    max-width: calc(100% - 380px);
  }

  .page-hero--section .page-hero__pills,
  .page-hero--calendar .page-hero__pills {
    max-width: calc(100% - 320px);
  }
}

.page-hero--section:has(.page-hero__pills) .page-hero__main,
.page-hero--calendar:has(.page-hero__pills) .page-hero__main {
  padding-top: 32px;
}

.page-hero__pill {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 5px 12px;
  border-radius: var(--radius-pill);
  background: var(--color-bg);
  color: var(--color-text-secondary);
  font-size: 0.78rem;
  font-weight: 600;
  line-height: 1.3;
  border: 1px solid var(--color-border-light);
  box-shadow: var(--shadow-sm);
}

.page-hero__pill strong,
.page-hero__pill .page-hero__accent {
  color: var(--color-accent-to);
  font-weight: 800;
}

a.page-hero__pill {
  color: var(--color-text-secondary);
  text-decoration: none;
  transition: background var(--transition-fast), color var(--transition-fast),
    border-color var(--transition-fast);
}

a.page-hero__pill:hover,
a.page-hero__pill:focus {
  background: var(--color-accent-tint);
  border-color: transparent;
  color: var(--color-text-secondary);
}

.page-hero--section .page-hero__title {
  font-size: 1.55rem;
  margin-bottom: 8px;
}

.page-hero--section .page-hero__sub {
  margin: 0 0 16px;
  max-width: 560px;
  font-size: 0.92rem;
}

.page-hero__btns {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.page-hero__btns--calendar {
  align-items: center;
  gap: 12px;
}

.page-hero--calendar .page-hero__btns .badge-cal {
  font-size: 0.78rem;
  padding: 6px 12px;
}

@media (max-width: 960px) {
  .page-hero__art {
    display: none;
  }

  /* Pills go back into flow so wrapped rows don't cover the title. */
  .page-hero__pills {
    position: static;
    max-width: 100%;
    margin: 0 0 10px;
  }

  .page-hero:has(.page-hero__pills) .page-hero__main,
  .page-hero--section:has(.page-hero__pills) .page-hero__main,
  .page-hero--calendar:has(.page-hero__pills) .page-hero__main {
    padding-top: 0;
  }
}

@media (max-width: 640px) {
  .card.page-hero {
    flex-direction: column;
    align-items: flex-start;
    padding: 16px;
  }

  .page-hero__main {
    width: 100%;
  }

  .page-hero--section .page-hero__title {
    font-size: 1.3rem;
  }

  .page-hero__info {
    flex-direction: column;
    align-items: flex-start;
  }

  .page-hero__ava {
    width: 72px;
    height: 72px;
  }
}

/* ---------- 9. Карточки ---------- */

.card {
  background: var(--color-bg);
  border: 1px solid var(--color-card-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  padding: 24px;
  transition: box-shadow var(--transition-base), transform var(--transition-base);
}

.card-hover:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

/* Vertical stack of cards in normal flow (not grid siblings). */
.card + .card {
  margin-top: 16px;
}

.card-grid > .card,
.card-grid > .card + .card,
.dash-split > .card,
.dash-split > .card + .card {
  margin-top: 0;
  height: 100%;
}

.card__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 16px;
}

.card__title {
  margin: 0;
  font-size: 1.05rem;
  font-weight: 600;
}

.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(200px, 100%), 1fr));
  gap: 16px;
  align-items: stretch;
}

.card-grid--2 {
  grid-template-columns: 1fr 1fr;
}

.card-grid--3 {
  grid-template-columns: 1fr 1fr 1fr;
}

.card-grid--dense {
  grid-template-columns: repeat(auto-fill, minmax(min(180px, 100%), 1fr));
}

.card-grid.hub-stats {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

@media (max-width: 760px) {
  .card-grid.hub-stats {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

/* Dashboard: upcoming events (left) + mini-calendar (right) */
.dash-split {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 16px;
  align-items: stretch;
}

.stat-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: 0;
  padding: 24px 14px 20px;
  min-height: 0;
}

.stat-card__icon {
  width: 54px;
  height: 54px;
  border-radius: 16px;
  margin: 0 auto 14px;
  display: grid;
  place-items: center;
  color: #fff;
  flex-shrink: 0;
}

.stat-card__icon svg {
  display: block;
}

.stat-card__icon--green {
  background: linear-gradient(135deg, #5fd68f, #2fa765);
  box-shadow: 0 10px 20px rgba(69, 184, 120, 0.35);
}

.stat-card__icon--coral {
  background: linear-gradient(135deg, #ff7a90, #f14b6b);
  box-shadow: 0 10px 20px rgba(241, 75, 107, 0.32);
}

.stat-card__icon--orange {
  background: linear-gradient(135deg, #ffb25c, #f68b1f);
  box-shadow: 0 10px 20px rgba(246, 139, 31, 0.32);
}

.stat-card__icon--purple {
  background: linear-gradient(135deg, #c465f0, #a834dc);
  box-shadow: 0 10px 20px rgba(168, 52, 220, 0.3);
}

.stat-card__icon--blue {
  background: linear-gradient(135deg, #6fc0f5, #3aa0e8);
  box-shadow: 0 10px 20px rgba(58, 160, 232, 0.32);
}

.stat-card__icon--yellow {
  background: linear-gradient(135deg, #ffd76a, #f8cc50);
  box-shadow: 0 10px 20px rgba(248, 204, 80, 0.4);
  color: var(--color-on-yellow);
}

.stat-card__value {
  font-size: 1.7rem;
  font-weight: 800;
  letter-spacing: -0.04em;
  color: var(--color-text);
  line-height: 1.1;
}

.stat-card__value--sm {
  font-size: 1.15rem;
  letter-spacing: -0.02em;
}

.stat-card__value a {
  color: inherit;
  text-decoration: none;
}

.stat-card__value a:hover {
  color: var(--color-accent);
}

.stat-card__label {
  margin-top: 4px;
  font-size: 0.82rem;
  font-weight: 700;
  color: var(--color-text-secondary);
}

.score-pills {
  display: inline-flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 6px;
  max-width: 100%;
}

.score-pills--center {
  justify-content: center;
  margin-top: 10px;
}

.score-pills .badge {
  font-weight: 700;
  white-space: nowrap;
}

.score-pills .badge strong {
  font-weight: 800;
  letter-spacing: -0.03em;
}

.score-pills .badge-neutral {
  background: var(--color-bg);
}

.stat-card .score-pills .badge {
  font-size: 0.72rem;
  padding: 3px 8px;
}

.scale-table .form-input {
  width: 6.5rem;
  text-align: right;
}

.stat-card__meta {
  margin: 4px 0 0;
  font-size: 0.82rem;
  color: var(--color-text-secondary);
}

/* Soft tint icon tiles (lists) — SVG via {% icon %} */
.icon-tile {
  display: inline-grid;
  place-items: center;
  flex-shrink: 0;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  line-height: 1;
  color: inherit;
}

.icon-tile svg {
  display: block;
}

.icon-tile--sm {
  width: 32px;
  height: 32px;
}

.icon-tile--sq {
  border-radius: 12px;
}

.icon-tile--green {
  background: var(--color-accent-tint);
  color: var(--color-accent);
}

.icon-tile--coral {
  background: var(--color-coral-bg);
  color: var(--color-coral-fg);
}

.icon-tile--orange {
  background: var(--color-orange-bg);
  color: var(--color-orange-fg);
}

.icon-tile--purple {
  background: var(--color-purple-bg);
  color: var(--color-purple-fg);
}

.icon-tile--blue {
  background: var(--color-blue-bg);
  color: var(--color-blue-fg);
}

.icon-tile--yellow {
  background: var(--color-yellow-bg);
  color: var(--color-yellow-fg);
}

.btn-ico {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  line-height: 0;
  margin-right: 2px;
}

.btn-ico svg {
  display: block;
}

.exam-countdown {
  background: var(--color-bg);
  border-radius: var(--radius-pill);
  padding: 10px 16px;
  box-shadow: var(--shadow-sm);
  color: var(--color-text-secondary);
  font-weight: 600;
}

.exam-countdown strong {
  color: var(--color-accent);
}

.list-plain__item--icon {
  justify-content: flex-start;
  gap: 12px;
}

.list-plain__item--icon .list-plain__main {
  flex: 1;
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.list-plain__item--icon .list-plain__main a {
  font-weight: 600;
  color: var(--color-text);
}

.list-plain__item--icon .list-plain__main a:hover {
  color: var(--color-accent);
}

.list-plain__meta {
  margin-left: auto;
  flex-shrink: 0;
  color: var(--color-text-secondary);
  font-size: 0.85rem;
}

.empty-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 48px 24px;
  text-align: center;
  color: var(--color-text-secondary);
}

/* ---------- 10. Бейджи ---------- */

.badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 12px;
  border-radius: var(--radius-pill);
  font-size: 0.78rem;
  font-weight: 500;
  background: var(--color-bg-secondary);
  color: var(--color-text-secondary);
}

button.badge {
  border: none;
  cursor: pointer;
  font: inherit;
}

button.badge:hover {
  background: var(--color-bg-tertiary, #e8e8ed);
  color: var(--color-text-primary);
}

/* Condition-file name: pill+dot like «теория», gray fill only (no border). */
a.file-chip {
  max-width: 100%;
  flex: 0 0 auto;
  width: max-content;
  color: var(--color-text-secondary);
  text-decoration: none;
  word-break: break-all;
  line-height: 1.3;
  cursor: pointer;
  background: color-mix(in srgb, var(--color-text-secondary) 14%, var(--color-bg));
  box-shadow: none;
  transition:
    background var(--transition-fast),
    color var(--transition-fast),
    transform var(--transition-fast);
}

a.file-chip:hover {
  background: color-mix(in srgb, var(--color-text-secondary) 22%, var(--color-bg));
  color: var(--color-text);
}

.file-chip-row {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  max-width: 100%;
}

a.file-chip:active {
  transform: scale(0.97);
}

a.file-chip:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
}

.file-chips {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
}

.badge::before {
  content: "";
  width: 6px;
  height: 6px;
  flex-shrink: 0;
  border-radius: 50%;
  background: currentColor;
}

.badge-success {
  background: var(--color-accent-tint);
  color: var(--color-accent-to);
}

.badge-warning {
  background: var(--color-yellow-bg);
  color: var(--color-yellow-fg);
}

.badge-error {
  background: var(--color-coral-bg);
  color: var(--color-coral-fg);
}

.badge-accent {
  background: var(--color-blue-bg);
  color: var(--color-blue-fg);
}

.badge.badge-gain {
  background: var(--color-purple-bg);
  color: var(--color-purple-fg);
}

.badge-coral {
  background: var(--color-coral-bg);
  color: var(--color-coral-fg);
}

/* Student HW / variants list rows (стр. 7, 11) */
.hw-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.hw-row {
  display: flex;
  align-items: center;
  gap: 14px;
  flex-wrap: wrap;
  padding: 14px 16px;
  border-radius: 16px;
  background: var(--color-bg-secondary);
  border: 1px solid transparent;
  transition: border-color var(--transition-fast), background var(--transition-fast),
    box-shadow var(--transition-fast);
}

.hw-row:hover {
  border-color: rgba(69, 184, 120, 0.28);
  background: var(--color-bg);
  box-shadow: var(--shadow-sm);
}

.hw-row__icon {
  width: 42px;
  height: 42px;
  border-radius: 12px;
  flex: none;
  display: grid;
  place-items: center;
}

.hw-row__icon--coral {
  background: var(--color-coral-bg);
  color: var(--color-coral-fg);
}

.hw-row__icon--purple {
  background: var(--color-purple-bg);
  color: var(--color-purple-fg);
}

.hw-row__icon--blue {
  background: var(--color-blue-bg);
  color: var(--color-blue-fg);
}

.hw-row__icon--orange {
  background: var(--color-orange-bg);
  color: var(--color-orange-fg);
}

.hw-row__icon--green {
  background: var(--color-accent-tint);
  color: var(--color-accent-to);
}

.hw-row__icon svg {
  display: block;
}

.hw-row__main {
  flex: 1 1 140px;
  min-width: 0;
}

.hw-row__title {
  font-weight: 800;
  font-size: 0.95rem;
  color: var(--color-text);
}

.hw-row--hub .hw-row__title {
  display: flex;
  align-items: center;
  gap: 6px;
  min-width: 0;
}

.hw-row__icon.review-task__num--long {
  width: auto;
  min-width: 42px;
  padding: 0 6px;
}

.hw-row__sub {
  color: var(--color-text-secondary);
  font-size: 0.74rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  gap: 6px;
  flex-wrap: wrap;
  margin-top: 3px;
}

.hw-kind {
  padding: 2px 9px;
  border-radius: var(--radius-pill);
  font-size: 0.64rem;
  font-weight: 800;
}

.hw-kind--ege {
  background: var(--color-blue-bg);
  color: var(--color-blue-fg);
}

.hw-kind--python {
  background: var(--color-purple-bg);
  color: var(--color-purple-fg);
}

.hw-kind--variant {
  background: var(--color-yellow-bg);
  color: var(--color-yellow-fg);
}

.hw-kind--lesson {
  background: var(--color-blue-bg);
  color: var(--color-blue-fg);
}

.hw-row__due {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--color-text-secondary);
  min-width: 170px;
}

.hw-row__due svg {
  flex: none;
  color: var(--color-text-secondary);
}

.hw-row__due-date {
  font-weight: 800;
  font-size: 0.82rem;
  color: var(--color-text);
}

.hw-row__due-sub {
  font-size: 0.7rem;
  font-weight: 700;
  color: var(--color-text-secondary);
}

.hw-row.is-overdue .hw-row__due-date,
.hw-row.is-overdue .hw-row__due svg {
  color: var(--color-coral);
}

.hw-row.is-overdue .hw-row__due-sub {
  color: var(--color-coral);
}

.hw-row__status {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}

.hw-row__meta {
  font-size: 0.72rem;
  font-weight: 600;
  color: var(--color-text-secondary);
}

.hw-row__action {
  margin-left: auto;
  flex: none;
}

.hw-row--teacher .hw-row__action {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  justify-content: flex-end;
  align-items: center;
  max-width: 100%;
  min-width: 0;
}

.hw-row__inline-form {
  display: inline-flex;
  margin: 0;
}

.hw-removed-note {
  font-size: 0.72rem;
  font-weight: 600;
  color: var(--color-text-secondary);
}

.hw-row__icon.hw-row__date {
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 1px;
  line-height: 1;
}

.hw-row__date-day {
  font-size: 0.88rem;
  font-weight: 800;
  line-height: 1.05;
}

.hw-row__date-month {
  font-size: 0.58rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.hw-row__action .badge {
  white-space: nowrap;
}

.hw-row--teacher {
  cursor: default;
}

.hw-row__drag {
  flex: none;
  width: 28px;
  height: 28px;
  border: none;
  background: transparent;
  color: var(--color-text-secondary);
  cursor: grab;
  font-size: 1rem;
  line-height: 1;
  padding: 0;
  border-radius: 8px;
}

.hw-row__drag:hover {
  background: var(--color-bg);
  color: var(--color-text);
}

.hw-row__drag--spacer {
  visibility: hidden;
  pointer-events: none;
}

.hw-row--static:hover {
  border-color: transparent;
  box-shadow: none;
}

.hw-row__status--works {
  max-width: 280px;
}

.hw-row__status--works .badge {
  max-width: 100%;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  text-decoration: none;
}

.hw-row__status--works a.badge:hover {
  filter: brightness(0.97);
}

.card__header--stack {
  flex-direction: column;
  align-items: stretch;
  gap: 14px;
}

.filters--students {
  width: 100%;
  align-items: flex-end;
}

.filters--students .filter-field--grow {
  flex: 1 1 180px;
  min-width: 160px;
}

.card__header--review {
  flex-wrap: wrap;
  row-gap: 12px;
  align-items: flex-end;
  justify-content: flex-start;
  gap: 16px;
}

.review-queue-heading {
  display: flex;
  flex-direction: column;
  gap: 4px;
  min-width: 0;
  flex: none;
}

.review-queue-heading::before {
  content: "\a0";
  font-size: 0.78rem;
  font-weight: 500;
  line-height: normal;
  visibility: hidden;
  pointer-events: none;
}

.review-queue-heading .card__title {
  display: flex;
  align-items: center;
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  line-height: 1.2;
  min-height: calc(0.88rem * 1.2 + 18px);
}

.filters--review {
  flex: 1 1 auto;
  min-width: 0;
  align-items: flex-end;
}

.filters--review .filter-field--audience {
  flex: none;
  width: auto;
  min-width: 0;
}

.filters--review .filter-field--audience select {
  width: 18rem;
  max-width: 100%;
  box-sizing: border-box;
}

.filters--review__meta {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-end;
  gap: 12px;
  margin-left: auto;
}

.hw-row.is-dragging {
  opacity: 0.55;
}

.hw-row.is-drag-over {
  outline: 1px dashed var(--color-accent);
  outline-offset: 2px;
}

.card__header .filters {
  display: flex;
  align-items: flex-end;
  gap: 12px;
  flex-wrap: wrap;
}

@media (max-width: 760px) {
  .hw-row__due {
    min-width: 0;
  }

  .hw-row__action {
    margin-left: 0;
    width: 100%;
  }

  .hw-row__action .btn {
    width: auto;
  }

  .hw-row--teacher .hw-row__action {
    width: 100%;
  }

  .filters--review .filter-field--audience {
    flex: 1 1 100%;
  }

  .filters--review .filter-field--audience select {
    width: 100%;
  }
}

/* Dashboard assignment rows (Актуальные ДЗ / варианты) */
.dash-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.dash-row {
  display: flex;
  align-items: center;
  gap: 12px;
  min-width: 0;
  padding: 12px 14px;
  border-radius: 16px;
  background: var(--color-bg-secondary);
  color: inherit;
  text-decoration: none;
  transition: background var(--transition-fast), box-shadow var(--transition-fast);
}

.dash-row:hover {
  background: var(--color-accent-tint);
  box-shadow: none;
  color: inherit;
}

.dash-row:hover .dash-row__title {
  color: var(--color-text);
}

.dash-row:hover .dash-row__sub {
  color: var(--color-text-secondary);
}

.dash-row:hover .dash-row__icon {
  background: var(--color-bg);
  color: var(--color-text);
}

.dash-row:hover .dash-row__icon--green {
  background: var(--color-accent-tint);
  color: var(--color-accent);
}

.dash-row:hover .dash-row__icon--coral {
  background: var(--color-coral-bg);
  color: var(--color-coral-fg);
}

.dash-row:hover .dash-row__icon--purple {
  background: var(--color-purple-bg);
  color: var(--color-purple-fg);
}

.dash-row:hover .dash-row__icon--orange {
  background: var(--color-orange-bg);
  color: var(--color-orange-fg);
}

.dash-row:hover .dash-row__icon--blue {
  background: var(--color-blue-bg);
  color: var(--color-blue-fg);
}

.dash-row:hover .dash-row__arrow {
  background: var(--color-bg);
  color: var(--color-accent-to);
}

.dash-row--static {
  cursor: default;
}

.dash-row--static:hover {
  background: var(--color-bg-secondary);
}

.dash-row__icon {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  flex: none;
  display: grid;
  place-items: center;
  background: var(--color-bg);
  color: var(--color-text);
  box-shadow: var(--shadow-sm);
}

.dash-row__icon--green {
  background: var(--color-accent-tint);
  color: var(--color-accent);
  box-shadow: none;
}

.dash-row__icon--coral {
  background: var(--color-coral-bg);
  color: var(--color-coral-fg);
  box-shadow: none;
}

.dash-row__icon--purple {
  background: var(--color-purple-bg);
  color: var(--color-purple-fg);
  box-shadow: none;
}

.dash-row__icon--orange {
  background: var(--color-orange-bg);
  color: var(--color-orange-fg);
  box-shadow: none;
}

.dash-row__icon--blue {
  background: var(--color-blue-bg);
  color: var(--color-blue-fg);
  box-shadow: none;
}

.dash-row__icon svg {
  display: block;
}

.dash-row__body {
  flex: 1;
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.dash-row__title {
  display: block;
  font-weight: 800;
  font-size: 0.92rem;
  color: var(--color-text);
  line-height: 1.25;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.dash-row__title--person {
  display: flex;
  align-items: center;
  gap: 8px;
  white-space: normal;
}

.dash-row__title--person > span {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  min-width: 0;
}

.dash-row__sub {
  color: var(--color-text-secondary);
  font-size: 0.76rem;
  font-weight: 700;
}

.dash-row .badge {
  margin-left: auto;
  flex: none;
}

.dash-row__arrow {
  flex: none;
  width: 34px;
  height: 34px;
  border-radius: 50%;
  background: var(--color-bg);
  box-shadow: var(--shadow-sm);
  display: grid;
  place-items: center;
  color: var(--color-accent);
}

.dash-row__arrow svg {
  display: block;
}

.dash-row__menu {
  flex: none;
  margin-left: auto;
  width: 30px;
  height: 30px;
  border-radius: 10px;
  display: grid;
  place-items: center;
  color: var(--color-text-tertiary);
}

.dash-row__menu svg {
  display: block;
}

.dash-row:hover .dash-row__menu {
  color: var(--color-text);
}

/* Profile data fields (стр. 3) — soft-ряды как dash-row, label над значением */
.profile-fields {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.profile-field {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 14px;
  border-radius: 16px;
  background: var(--color-bg-secondary);
}

.profile-field__icon {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  flex: none;
  display: grid;
  place-items: center;
}

.profile-field__icon svg {
  display: block;
}

.profile-field__icon--green {
  background: var(--color-accent-tint);
  color: var(--color-accent);
}

.profile-field__icon--coral {
  background: var(--color-coral-bg);
  color: var(--color-coral-fg);
}

.profile-field__icon--orange {
  background: var(--color-orange-bg);
  color: var(--color-orange-fg);
}

.profile-field__icon--purple {
  background: var(--color-purple-bg);
  color: var(--color-purple-fg);
}

.profile-field__icon--blue {
  background: var(--color-blue-bg);
  color: var(--color-blue-fg);
}

.profile-field__icon--yellow {
  background: var(--color-yellow-bg);
  color: var(--color-yellow-fg);
}

.profile-field__body {
  display: flex;
  flex-direction: column;
  gap: 2px;
  min-width: 0;
  flex: 1;
}

.profile-field__label {
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  text-transform: uppercase;
  color: var(--color-text-secondary);
}

.profile-field__value {
  font-size: 0.98rem;
  font-weight: 650;
  color: var(--color-text);
  word-break: break-word;
}

.profile-field__hint {
  font-size: 0.82rem;
  color: var(--color-text-secondary);
}

.profile-fields__footer {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.profile-field--toggle {
  cursor: pointer;
  transition: background var(--transition-fast, 0.15s);
}

.profile-field--toggle:hover {
  background: var(--color-accent-tint);
}

.profile-field--toggle .profile-field__value {
  font-size: 0.92rem;
  font-weight: 650;
  text-transform: none;
  letter-spacing: 0;
}

.profile-notify__section {
  margin: 18px 0 10px;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--color-text-secondary);
}

.profile-switch {
  position: relative;
  flex: none;
  width: 48px;
  height: 28px;
}

.profile-switch__input {
  position: absolute;
  inset: 0;
  z-index: 2;
  margin: 0;
  opacity: 0;
  cursor: pointer;
  width: 100%;
  height: 100%;
}

.profile-switch__ui {
  position: absolute;
  inset: 0;
  border-radius: 999px;
  background: var(--color-switch-off);
  transition: background 0.18s ease;
  pointer-events: none;
}

.profile-switch__ui::after {
  content: "";
  position: absolute;
  top: 3px;
  left: 3px;
  width: 22px;
  height: 22px;
  border-radius: 50%;
  background: var(--color-switch-knob);
  box-shadow: 0 2px 6px rgba(31, 45, 90, 0.18);
  transition: transform 0.18s ease;
}

.profile-switch__input:checked + .profile-switch__ui {
  background: var(--gradient-accent);
}

.profile-switch__input:checked + .profile-switch__ui::after {
  transform: translateX(20px);
}

.profile-switch__input:focus-visible + .profile-switch__ui {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
}

.profile-field--upcoming {
  align-items: flex-start;
}

.profile-field--upcoming:hover {
  background: var(--color-accent-tint);
}

.profile-field--upcoming .profile-field__value {
  font-size: 0.92rem;
  font-weight: 650;
  text-transform: none;
  letter-spacing: 0;
  cursor: pointer;
}

.profile-field--upcoming .profile-switch {
  margin-top: 6px;
}

.profile-minutes {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-top: 8px;
  max-width: 100%;
}

.profile-minutes .form-input {
  width: 5.5rem;
  padding: 6px 10px;
  text-align: center;
}

.profile-minutes__suffix {
  font-size: 0.88rem;
  font-weight: 650;
  color: var(--color-text-secondary);
}

.type-unlock-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  align-items: center;
  max-width: 100%;
}

.type-unlock-grid__item {
  display: inline-flex;
  margin: 0;
}

/* ---------- 11. Прогресс-бары ---------- */

.progress {
  width: 100%;
  height: 8px;
  border-radius: var(--radius-pill);
  background: var(--color-bg-secondary);
  overflow: hidden;
}

.progress__bar {
  height: 100%;
  border-radius: var(--radius-pill);
  background: var(--gradient-accent);
  transition: width var(--transition-base);
}

/* Password strength meter (стр. 4) */
.password-meter {
  margin-top: 8px;
}

.password-meter__track {
  height: 6px;
  border-radius: var(--radius-pill);
  background: var(--color-bg-secondary);
  overflow: hidden;
}

.password-meter__bar {
  display: block;
  height: 100%;
  width: 0;
  border-radius: var(--radius-pill);
  background: var(--color-coral, #F14B6B);
  transition: width var(--transition-base), background var(--transition-base);
}

.password-meter[data-level="2"] .password-meter__bar {
  background: var(--color-orange, #F68B1F);
}

.password-meter[data-level="3"] .password-meter__bar,
.password-meter[data-level="4"] .password-meter__bar {
  background: var(--gradient-accent);
}

.password-meter__label {
  margin-top: 6px;
  margin-bottom: 0;
  min-height: 1.2em;
}

/* ---------- 12. Сообщения (Django messages) ---------- */

.messages {
  list-style: none;
  margin: 0 0 20px;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.message {
  padding: 12px 16px;
  border-radius: var(--radius-sm);
  font-size: 0.9rem;
  border: 1px solid transparent;
}

.message-success {
  background: var(--color-verdict-ok-bg);
  border-color: rgba(52, 199, 89, 0.3);
  color: var(--color-verdict-ok-fg);
}

.message-error {
  background: var(--color-verdict-err-bg);
  border-color: rgba(255, 59, 48, 0.3);
  color: var(--color-verdict-err-fg);
}

.message-warning {
  background: var(--color-verdict-warn-bg);
  border-color: rgba(255, 149, 0, 0.3);
  color: var(--color-verdict-warn-fg);
}

.message-info,
.message-debug {
  background: rgba(69, 184, 120, 0.10);
  border-color: rgba(69, 184, 120, 0.28);
  color: var(--color-accent);
}

/* ---------- 13. Таблицы ---------- */

.table-wrap {
  overflow-x: auto;
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-md);
}

.table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9rem;
}

.table th,
.table td {
  padding: 12px 16px;
  text-align: left;
  vertical-align: middle;
  border-bottom: 1px solid var(--color-border);
  white-space: nowrap;
}

.table th {
  font-weight: 600;
  color: var(--color-text-secondary);
  background: var(--color-bg-tertiary);
}

.table tr:last-child td {
  border-bottom: none;
}

/* ---------- 14. Утилиты ---------- */

.flex {
  display: flex;
}

.flex-col {
  flex-direction: column;
}

.flex-wrap {
  flex-wrap: wrap;
}

.items-center {
  align-items: center;
}

.justify-between {
  justify-content: space-between;
}

.gap-8 {
  gap: 8px;
}

.gap-12 {
  gap: 12px;
}

.gap-16 {
  gap: 16px;
}

.mt-16 {
  margin-top: 16px;
}

.mt-24 {
  margin-top: 24px;
}

.mt-4 {
  margin-top: 4px;
}

.mt-8 {
  margin-top: 8px;
}

.mb-0 {
  margin-bottom: 0;
}

.mb-4 {
  margin-bottom: 4px;
}

.mb-8 {
  margin-bottom: 8px;
}

.mb-12 {
  margin-bottom: 12px;
}

.mb-16 {
  margin-bottom: 16px;
}

.mb-24 {
  margin-bottom: 24px;
}

.hidden {
  display: none !important;
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.text-center {
  text-align: center;
}

/* ---------- 15. Вендорные контейнеры (Monaco / KaTeX) ---------- */

.editor-shell {
  display: flex;
  flex-direction: column;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  overflow: hidden;
  background: var(--color-code-bg);
}

.editor-chrome {
  display: flex;
  flex: none;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 10px;
  padding: 9px 14px;
  background: var(--color-code-bg-deep);
  border-bottom: 1px solid var(--color-border);
  font-size: 0.76rem;
  font-weight: 700;
  color: var(--color-text-secondary);
}

.editor-chrome__left,
.editor-chrome__right {
  display: flex;
  align-items: center;
  gap: 10px;
  min-width: 0;
}

.editor-chrome__file {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.editor-chrome__version {
  white-space: nowrap;
}

.editor-dots {
  display: flex;
  gap: 6px;
  flex: none;
}

.editor-dots__dot {
  width: 9px;
  height: 9px;
  border-radius: 50%;
}

.editor-dots__dot:nth-child(1) {
  background: var(--color-coral);
  opacity: 0.75;
}

.editor-dots__dot:nth-child(2) {
  background: var(--color-yellow);
  opacity: 0.85;
}

.editor-dots__dot:nth-child(3) {
  background: var(--color-accent);
  opacity: 0.85;
}

.editor-font-btns {
  display: flex;
  gap: 4px;
  flex: none;
}

.editor-font-btn {
  width: 26px;
  height: 26px;
  padding: 0;
  border: 1px solid var(--color-border);
  border-radius: 8px;
  background: var(--color-bg);
  color: var(--color-text);
  font-size: 1rem;
  font-weight: 800;
  line-height: 1;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  transition: background var(--transition-fast), color var(--transition-fast),
    border-color var(--transition-fast);
}

.editor-font-btn:hover:not(:disabled) {
  background: var(--color-accent-tint);
  color: var(--color-accent-to);
  border-color: transparent;
}

.editor-font-btn:disabled {
  opacity: 0.4;
  cursor: default;
}

.editor-shell__body {
  flex: 1 1 auto;
  min-height: var(--code-min, 320px);
  height: var(--code-min, 320px);
  background: var(--color-code-bg);
}

.panel-resize {
  flex: none;
  height: 16px;
  margin: 0;
  padding: 0 10px 0 0;
  border: 0;
  border-top: 1px solid var(--color-border);
  background: var(--color-code-bg-deep);
  cursor: ns-resize;
  display: flex;
  align-items: center;
  justify-content: flex-end;
  touch-action: none;
}

.panel-resize::before {
  content: "";
  width: 36px;
  height: 4px;
  border-radius: 999px;
  background: var(--scroll-thumb);
}

.panel-resize:hover,
.panel-resize.is-dragging {
  background: var(--color-accent-tint);
}

.panel-resize:hover::before,
.panel-resize:focus-visible::before,
.panel-resize.is-dragging::before {
  background: var(--color-accent);
}

.panel-resize:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: -2px;
}

html.is-panel-resizing,
html.is-panel-resizing * {
  cursor: ns-resize;
  user-select: none;
}

/* Thin line scrollbar (Firefox + WebKit) for code/IO panels */
.soft-scroll {
  scrollbar-width: thin;
  scrollbar-color: var(--scroll-thumb) transparent;
}

.soft-scroll::-webkit-scrollbar {
  width: 6px;
  height: 6px;
}

.soft-scroll::-webkit-scrollbar-track {
  background: transparent;
}

.soft-scroll::-webkit-scrollbar-thumb {
  background: var(--scroll-thumb);
  border-radius: 999px;
  border: 1px solid transparent;
  background-clip: padding-box;
}

.soft-scroll::-webkit-scrollbar-thumb:hover {
  background: var(--scroll-thumb-hover);
  border: 1px solid transparent;
  background-clip: padding-box;
}

.soft-scroll::-webkit-scrollbar-corner {
  background: transparent;
}

.katex-demo {
  padding: 16px 20px;
  border: 1px dashed var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-bg-tertiary);
  overflow-x: auto;
}

/* ---------- 16. Адаптивность ---------- */

@media (min-width: 768px) {
  .profile-menu__name {
    display: block;
  }
}

@media (max-width: 1024px) {
  .app-shell {
    display: block;
    min-height: 100vh;
  }

  .app-column {
    max-width: none;
    min-height: calc(100vh - (var(--chrome-gap) * 2));
  }

  .app-sidebar {
    position: fixed;
    top: var(--chrome-gap);
    left: var(--chrome-gap);
    bottom: var(--chrome-gap);
    width: min(var(--sidebar-width), calc(100vw - (var(--chrome-gap) * 2)));
    height: auto;
    z-index: 45;
    transform: translateX(calc(-100% - var(--chrome-gap) - 8px));
    box-shadow: var(--shadow-lg);
    transition: transform var(--transition-base);
  }

  .app-sidebar.is-open {
    transform: translateX(0);
  }

  .app-header__menu-toggle {
    display: inline-flex;
  }

  .dash-split {
    grid-template-columns: 1fr;
  }

  .calendar-toolbar__label {
    min-width: 0;
  }
}

@media (max-width: 640px) {
  .auth-card {
    padding: 28px 22px;
  }

  .app-footer {
    padding: 10px;
  }

  .app-footer__inner {
    flex-direction: column;
    align-items: flex-start;
  }

  .card-grid--2,
  .card-grid--3 {
    grid-template-columns: 1fr;
  }

  .card-grid {
    grid-template-columns: 1fr;
  }

  .filter-field,
  .filter-field--grow {
    flex: 1 1 100%;
    min-width: 0;
    width: 100%;
  }

  .filter-field select,
  .filter-field input {
    width: 100%;
    max-width: 100%;
    box-sizing: border-box;
  }

  .assign-pick-search {
    flex-wrap: wrap;
    width: 100%;
    margin-right: 0;
  }

  .assign-pick-search__input {
    flex: 1 1 8rem;
    width: auto;
    min-width: 0;
  }

  .calendar-toolbar__nav {
    width: 100%;
  }

  .card:has(.table) {
    overflow-x: auto;
  }

  .task-toolbar {
    align-items: stretch;
  }

  .task-toolbar .btn {
    justify-content: center;
  }
}



/* ---------- 17. Банк заданий: фильтры, карточки, Markdown-контент ---------- */

.filter-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  align-items: flex-end;
  margin-bottom: 20px;
}

.filter-field {
  display: flex;
  flex-direction: column;
  gap: 4px;
  min-width: min(140px, 100%);
}

.filter-field label {
  font-size: 0.78rem;
  font-weight: 500;
  color: var(--color-text-secondary);
}

.filter-field select,
.filter-field input {
  padding: 8px 12px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  font-size: 0.88rem;
  background: var(--color-bg);
  color: var(--color-text);
}

.filter-field--grow {
  flex: 1;
  min-width: min(220px, 100%);
}

.badge-difficulty-0 {
  background: var(--color-bg-secondary);
  color: var(--color-text-tertiary);
}

.badge-difficulty-1 {
  background: var(--color-verdict-ok-bg);
  color: var(--color-verdict-ok-fg);
}

.badge-difficulty-2 {
  background: var(--color-verdict-warn-bg);
  color: var(--color-verdict-warn-fg);
}

.badge-difficulty-3 {
  background: var(--color-verdict-err-bg);
  color: var(--color-verdict-err-fg);
}

.pagination {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 20px;
  align-items: center;
}

.pagination__info {
  color: var(--color-text-secondary);
  font-size: 0.85rem;
  margin-right: 8px;
}

.pagination--simple {
  gap: 12px;
  justify-content: flex-end;
}

.task-toolbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
  margin-bottom: 20px;
}

.task-toolbar__lead {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
  min-width: 0;
}

.task-toolbar__lead > div {
  min-width: 0;
}

.task-toolbar__lead h1 {
  margin: 0;
  font-size: 1.35rem;
}

.task-toolbar__actions {
  display: flex;
  align-items: center;
  gap: 8px;
  flex: none;
  flex-wrap: wrap;
  max-width: 100%;
}

.task-toolbar .hw-row__status {
  margin-top: 8px;
}

.task-toolbar .solve-timer {
  font-weight: 800;
}

@media (max-width: 760px) {
  .task-toolbar {
    flex-direction: column;
    align-items: stretch;
  }

  .task-toolbar__actions {
    justify-content: flex-start;
  }
}

.task-editor-fields {
  border: 0;
  margin: 0;
  padding: 0;
  min-width: 0;
}

.task-editor {
  display: grid;
  grid-template-columns: minmax(0, 1.6fr) minmax(280px, 0.9fr);
  gap: 20px;
  align-items: start;
}

.task-editor__main,
.task-editor__aside {
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.task-editor__main > .card,
.task-editor__aside > .card,
.task-editor__main > .card + .card,
.task-editor__aside > .card + .card {
  margin-top: 0;
  height: auto;
}

.task-editor__aside {
  position: sticky;
  top: var(--chrome-gap);
}

.task-editor__card-title {
  display: flex;
  align-items: center;
  gap: 10px;
}

.task-editor__card-title .hw-row__icon {
  width: 36px;
  height: 36px;
  border-radius: 10px;
}

.task-editor__lead {
  margin: -4px 0 14px;
}

.task-editor .card > .form-group:last-child {
  margin-bottom: 0;
}

.task-editor__md {
  min-height: 280px;
  line-height: 1.55;
  resize: vertical;
}

.task-preview {
  margin-top: 4px;
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-md);
  background: var(--color-bg-secondary);
  padding: 0 16px 14px;
}

.task-preview > summary {
  cursor: pointer;
  font-weight: 600;
  padding: 12px 0;
  color: var(--color-text);
  list-style: none;
}

.task-preview > summary::-webkit-details-marker {
  display: none;
}

.task-files {
  list-style: none;
  margin: 0 0 14px;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.task-file {
  display: flex;
  align-items: center;
  gap: 12px;
  min-width: 0;
  flex-wrap: wrap;
  padding: 10px 12px;
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-md);
  background: var(--color-bg-secondary);
}

.task-file__thumb {
  flex: none;
  width: 48px;
  height: 48px;
  border-radius: 12px;
  overflow: hidden;
  background: var(--color-bg);
  border: 1px solid var(--color-border-light);
}

.task-file__thumb img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.task-file__icon {
  flex: none;
  width: 42px;
  height: 42px;
}

.task-file__body {
  flex: 1 1 12rem;
  min-width: 0;
}

.task-file__name {
  display: block;
  font-weight: 600;
  color: var(--color-text);
  overflow-wrap: anywhere;
}

.task-file__name:hover {
  color: var(--color-accent);
}

.task-file__meta {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 8px 12px;
  margin: 4px 0 0;
  font-size: 0.8rem;
  color: var(--color-text-tertiary);
}

.task-file__path {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  overflow-wrap: anywhere;
  color: var(--color-text-secondary);
}

.task-file__actions {
  display: flex;
  flex: none;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 6px;
  margin-left: auto;
}

.task-file__btn {
  width: 36px;
  height: 36px;
  padding: 0;
  display: inline-grid;
  place-items: center;
  border-radius: 12px;
}

.task-file__btn .btn-ico {
  margin: 0;
}

.task-file__btn.is-copied {
  color: var(--color-accent);
  border-color: rgba(69, 184, 120, 0.35);
}

.file-drop {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  padding: 22px 16px;
  border: 1.5px dashed rgba(69, 184, 120, 0.45);
  border-radius: var(--radius-md);
  background: var(--color-accent-tint);
  text-align: center;
  cursor: pointer;
}

.file-drop:hover,
.file-drop.is-dragover,
.file-drop:focus-within {
  border-color: var(--color-accent);
  background: var(--color-bg);
  box-shadow: var(--shadow-sm);
}

.file-drop__icon {
  width: 42px;
  height: 42px;
  pointer-events: none;
}

.file-drop__title {
  font-weight: 600;
  font-size: 0.92rem;
  color: var(--color-text);
}

.file-drop__hint {
  font-size: 0.8rem;
  color: var(--color-text-secondary);
  max-width: 36em;
}

.file-drop__input {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  opacity: 0;
  cursor: pointer;
}

.file-drop__picked {
  margin: 8px 0 0;
}

.task-editor-actions {
  position: sticky;
  bottom: 0;
  z-index: 6;
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 12px;
  margin-top: 20px;
  padding: 12px 0 4px;
  background: var(--color-chrome);
  backdrop-filter: saturate(180%) blur(18px);
  -webkit-backdrop-filter: saturate(180%) blur(18px);
  border-top: 1px solid var(--color-border-light);
}

@media (max-width: 960px) {
  .task-editor {
    grid-template-columns: 1fr;
  }

  .task-editor__aside {
    position: static;
    order: -1;
  }

  .task-file {
    flex-wrap: wrap;
  }

  .task-file__actions {
    width: 100%;
  }
}

.answer-grid {
  display: inline-grid;
  gap: 8px;
  margin: 8px 0 16px;
  width: 100%;
}

.answer-grid input {
  width: 100%;
  padding: 8px 10px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  font-size: 0.9rem;
  text-align: center;
}

.file-list {
  list-style: none;
  margin: 0 0 12px;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.file-list__item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 10px 14px;
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-sm);
  font-size: 0.88rem;
}

/* Rendered task statements (`core/markdown`) — descendant-scoped so this
 * never bleeds into unrelated markup elsewhere on the page (see the file
 * header note on avoiding bare `div`/`span`/tag selectors). */

.markdown-body {
  line-height: 1.65;
  color: var(--color-text);
  overflow-x: auto;
  max-width: 100%;
}

.markdown-body :first-child {
  margin-top: 0;
}

.markdown-body img {
  border-radius: var(--radius-sm);
  margin: 12px 0;
  max-width: 100%;
  height: auto;
}

.markdown-body table {
  border-collapse: collapse;
  margin: 16px 0;
  font-size: 0.9rem;
}

.markdown-body th,
.markdown-body td {
  border: 1px solid var(--color-border);
  padding: 8px 12px;
}

.markdown-body code {
  background: var(--color-bg-secondary);
  padding: 2px 6px;
  border-radius: 4px;
  font-size: 0.88em;
}

.markdown-body pre {
  background: #1e1e1e;
  color: #f5f5f7;
  padding: 14px 16px;
  border-radius: var(--radius-md);
  overflow-x: auto;
}

.markdown-body pre code {
  background: transparent;
  padding: 0;
  color: inherit;
}

.markdown-body blockquote {
  margin: 12px 0;
  padding: 4px 16px;
  border-left: 3px solid var(--color-border);
  color: var(--color-text-secondary);
}

.markdown-body .admonition {
  margin: 16px 0;
  padding: 14px 16px;
  border-radius: var(--radius-md);
  border-left: 4px solid var(--color-accent);
  background: rgba(69, 184, 120, 0.08);
}

.markdown-body .admonition-title {
  margin: 0 0 6px;
  font-weight: 600;
}

.markdown-body .admonition.tip {
  border-left-color: var(--color-success);
  background: rgba(52, 199, 89, 0.08);
}

.markdown-body .admonition.warning {
  border-left-color: var(--color-warning);
  background: rgba(255, 149, 0, 0.08);
}

.markdown-body .admonition.danger,
.markdown-body .admonition.caution {
  border-left-color: var(--color-error);
  background: rgba(255, 59, 48, 0.08);
}

/* ---------- Банк заданий: полные карточки (стр. 32, 44) ---------- */

.bank-task-list {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

[data-bank-results].is-loading {
  opacity: 0.55;
  pointer-events: none;
  transition: opacity var(--transition-fast);
}

.bank-task--picked {
  outline: 2px solid var(--color-accent);
  outline-offset: -2px;
}

.bank-task__actions {
  flex-shrink: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  align-items: center;
}

.task-usage-tags {
  display: inline-flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 6px;
  flex-shrink: 0;
}

.homework-selected__bar .task-usage-tags {
  margin-left: auto;
}

.bank-task__answer-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  align-items: center;
}

.bank-task__heading {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  min-width: 0;
  flex: 1;
}

.homework-pick-toolbar {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
}

.homework-selected__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.homework-selected__item {
  padding: 0;
  border-radius: var(--radius-md, 8px);
  background: var(--color-bg-secondary, #f5f5f7);
  border: 1px solid var(--color-border-light, #e5e5ea);
  overflow: hidden;
}

.homework-selected__item.is-dragging {
  opacity: 0.45;
}

.homework-selected__item.is-drag-over {
  border-color: var(--color-accent);
  box-shadow: inset 0 0 0 1px var(--color-accent);
}

.homework-selected__drag {
  flex-shrink: 0;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  padding: 0;
  border: none;
  border-radius: var(--radius-sm, 4px);
  background: transparent;
  color: var(--color-text-secondary, #6b7280);
  cursor: grab;
  font-size: 16px;
  line-height: 1;
  user-select: none;
  touch-action: none;
}

.homework-selected__drag:active {
  cursor: grabbing;
}

.homework-selected__bar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  padding: 10px 12px;
}

.homework-selected__label {
  min-width: 0;
  flex: 1;
}

.homework-selected__type-badge {
  flex: none;
  font-size: 0.72rem;
  font-weight: 800;
  color: var(--color-accent-to);
  background: var(--color-accent-tint);
  border-radius: var(--radius-pill);
  padding: 4px 10px;
}

.homework-selected__body {
  padding: 0 12px 12px;
  border-top: 1px solid var(--color-border-light, #e5e5ea);
  background: var(--color-bg, #fff);
}

.assign-pick-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.assign-pick {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  width: 100%;
  padding: 10px 14px;
  text-align: left;
  border: 1px solid var(--color-border-light, #e5e5ea);
  border-radius: var(--radius-md, 8px);
  background: var(--color-bg, #fff);
  cursor: pointer;
  font: inherit;
  color: inherit;
  transition: border-color 0.15s ease, background 0.15s ease;
}

.assign-pick:hover:not(:disabled) {
  border-color: var(--color-accent);
  background: var(--color-bg-secondary, #f5f5f7);
}

.assign-pick:disabled,
.assign-pick--done {
  cursor: default;
  opacity: 0.72;
}

.assign-pick__name {
  font-weight: 500;
}

.bank-task__header {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-start;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 16px;
}

.bank-task__title {
  margin: 0 0 8px;
  font-size: 1.1rem;
  font-weight: 600;
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 6px;
}

.task-heading {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
}

#exam-intro-modal .modal__body,
#exam-warning-modal .modal__body {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin: 8px 0 16px;
}

.bank-task__meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
}

.kompege-id {
  display: inline-block;
  margin-left: 6px;
  padding: 2px 8px;
  border-radius: var(--radius-sm, 4px);
  font-size: 0.78rem;
  font-weight: 500;
  color: var(--color-text-tertiary);
  background: var(--color-bg-secondary);
  white-space: nowrap;
  vertical-align: middle;
}

.bank-task__statement {
  max-width: 100%;
}

.bank-task__answer {
  margin-top: 12px;
  padding: 12px 16px;
  border-radius: var(--radius-md);
  background: var(--color-bg-secondary, #f5f5f7);
  border: 1px solid var(--color-border-light, #e5e5ea);
}

.bank-task__answer-pre {
  margin: 0;
  padding: 0;
  white-space: pre-wrap;
  word-break: break-word;
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 0.85rem;
  background: transparent;
}

.bank-task__subtitle {
  margin: 16px 0 8px;
  font-size: 0.95rem;
}

/* Затемнение фона при открытой мобильной боковой панели. */
.sidebar-backdrop {
  display: none;
}

body.sidebar-open .sidebar-backdrop {
  display: block;
  position: fixed;
  inset: 0;
  z-index: 44;
  background: rgba(0, 0, 0, 0.3);
}

body.sidebar-open {
  overflow: hidden;
}

@media (min-width: 1025px) {
  body.sidebar-open {
    overflow: auto;
  }
}

/* ---------- 18. Редактор решения (стр. 9, 13) ---------- */

.solve-layout {
  display: grid;
  grid-template-columns: 224px 1fr;
  gap: 24px;
  align-items: start;
}

.solve-sidebar {
  display: flex;
  flex-direction: column;
  position: sticky;
  top: var(--chrome-gap);
  padding: 12px 0;
  max-height: calc(100vh - (var(--chrome-gap) * 2));
  overflow: hidden;
}

.solve-sidebar__header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 8px;
  flex-shrink: 0;
  padding: 0 16px 10px;
  margin-bottom: 0;
}

.solve-sidebar__title {
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.solve-sidebar__title .hw-removed-note {
  line-height: 1.35;
}

.solve-sidebar__header strong {
  min-width: 0;
}

.solve-timer {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  flex-shrink: 0;
  font-variant-numeric: tabular-nums;
  font-size: 0.85rem;
  color: var(--color-text-secondary);
}

.solve-timer--warn {
  color: var(--color-warning, #d97706);
  font-weight: 600;
}

.solve-timer--ended {
  color: var(--color-coral, #e07a5f);
  font-weight: 600;
}

.solve-nav {
  list-style: none;
  margin: 0;
  padding: 4px 10px 10px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  flex: 1 1 auto;
  min-height: 0;
  overflow-x: hidden;
  overflow-y: auto;
}

.solve-nav__row {
  position: relative;
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: center;
  column-gap: 6px;
  padding: 8px 10px;
  border-radius: 16px;
  background: var(--color-bg-secondary);
  border: 1px solid transparent;
  transition: border-color var(--transition-fast), background var(--transition-fast),
    box-shadow var(--transition-fast);
}

.solve-nav__hit {
  position: absolute;
  inset: 0;
  z-index: 1;
  border-radius: inherit;
}

.solve-nav__hit:focus {
  outline: none;
}

.solve-nav__reqs {
  display: flex;
  align-items: center;
  flex-wrap: nowrap;
  gap: 2px;
  min-width: 0;
  position: relative;
  z-index: 2;
}

.solve-nav__reqs .task-req-star,
.solve-nav__reqs .task-req-icon {
  flex-shrink: 0;
}

.solve-nav__status {
  position: relative;
  z-index: 2;
  justify-self: end;
  display: grid;
  place-items: center;
  width: 18px;
  height: 18px;
  min-width: 18px;
  padding: 0;
  background: transparent;
  font-size: 0;
  line-height: 0;
  text-decoration: none;
  color: var(--color-text-secondary);
}

.solve-nav__status.badge-accent {
  color: var(--color-blue-fg);
}

.solve-nav__status.badge-warning {
  color: var(--color-yellow-fg);
}

.solve-nav__status.badge-success {
  color: var(--color-accent-to);
}

.solve-nav__status:hover {
  color: var(--color-text-secondary);
}

.solve-nav__status.badge-accent:hover {
  color: var(--color-blue-fg);
}

.solve-nav__status.badge-warning:hover {
  color: var(--color-yellow-fg);
}

.solve-nav__status.badge-success:hover {
  color: var(--color-accent-to);
}

.solve-nav__status.badge::before {
  width: 8px;
  height: 8px;
}

.solve-nav__num {
  display: grid;
  place-items: center;
  box-sizing: border-box;
  min-width: 32px;
  height: 32px;
  padding: 0 8px;
  border-radius: 12px;
  background: var(--color-blue-bg);
  color: var(--color-blue-fg);
  font-weight: 800;
  font-size: 0.82rem;
  font-variant-numeric: tabular-nums;
  letter-spacing: -0.03em;
  line-height: 1;
  pointer-events: none;
}

.solve-nav__item:hover .solve-nav__row {
  border-color: rgba(69, 184, 120, 0.28);
  background: var(--color-bg);
  box-shadow: var(--shadow-sm);
}

.solve-nav__item.is-active .solve-nav__row {
  border-color: rgba(69, 184, 120, 0.45);
  background: var(--color-bg);
  box-shadow: var(--shadow-sm);
}

.solve-nav__item.is-active .solve-nav__num {
  background: var(--color-accent-tint);
  color: var(--color-accent-to);
}

.solve-nav__item:has(.solve-nav__hit:focus-visible) .solve-nav__row {
  border-color: rgba(69, 184, 120, 0.45);
  background: var(--color-bg);
  box-shadow: var(--shadow-sm);
}

/* The tip is position:fixed but trapped in the row's z-index:2 layer, so a
   later status dot or icon paints through it. Lift the open row above its
   neighbors, and the open control above the same-row dot. */
.solve-nav__item:has(.task-req-tip.is-open) {
  position: relative;
  z-index: 4;
}

.solve-nav__reqs:has(.task-req-tip.is-open),
.solve-nav__status.is-open {
  z-index: 3;
}

.solve-sidebar__footer {
  flex-shrink: 0;
  margin-top: 12px;
  padding: 0 16px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.solve-sidebar__footer .btn,
.solve-sidebar__footer form {
  width: 100%;
}

.solve-sidebar__footer .badge {
  width: 100%;
  justify-content: center;
  box-sizing: border-box;
}

.solve-sidebar__footer .badge[hidden] {
  display: none;
}

.solve-main {
  min-width: 0;
}

.solve-files {
  margin-top: 8px;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 8px;
}

.solve-files__label {
  margin: 0;
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--color-text-secondary);
}

.solve-console {
  margin-top: 12px;
}

.solve-console .form-input,
.solve-console textarea.form-input,
textarea.code-input {
  font-family: var(--font-mono);
  font-size: 0.86rem;
  line-height: 1.5;
  color: var(--color-code-text);
  background: var(--color-code-bg);
  caret-color: var(--color-accent);
}

#stdin-panel {
  display: block;
  width: 100%;
  max-width: 100%;
  resize: vertical;
  overflow: auto;
  max-height: 70vh;
}

.answer-grid {
  display: grid;
  grid-template-columns: repeat(var(--answer-cols, 1), minmax(0, 160px));
  gap: 12px;
}

.dropzone {
  border: 2px dashed var(--color-border);
  border-radius: var(--radius-md);
  padding: 24px;
  text-align: center;
  background: var(--color-bg-tertiary);
  transition: border-color var(--transition-base), background var(--transition-base);
}

.dropzone.is-dragover {
  border-color: var(--color-accent);
  background: rgba(69, 184, 120, 0.08);
}

.dropzone.is-disabled {
  opacity: 0.6;
  pointer-events: none;
}

.link-like {
  color: var(--color-accent);
  cursor: pointer;
  text-decoration: underline;
}

.file-list {
  list-style: none;
  margin: 12px 0 0;
  padding: 0;
}

.file-list li {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 6px 0;
}

.solve-console__scroll {
  margin-top: 8px;
  width: 100%;
  max-width: 100%;
  height: 240px;
  min-height: 240px;
  max-height: max(240px, 70vh);
  overflow-x: auto;
  overflow-y: auto;
  resize: vertical;
  overscroll-behavior: contain;
  border-radius: var(--radius-sm);
  background: var(--color-code-bg);
  border: 1px solid var(--color-border);
}

.solve-console__out {
  display: block;
  margin: 0;
  padding: 12px;
  box-sizing: border-box;
  min-height: 100%;
  height: auto;
  max-height: none;
  overflow: visible;
  background: transparent;
  color: var(--color-code-text);
  font-family: var(--font-mono);
  font-size: 0.86rem;
  line-height: 1.5;
  white-space: pre-wrap;
  overflow-wrap: anywhere;
  word-break: break-word;
}

.console {
  background: var(--color-code-bg);
  color: var(--color-code-text);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md, 8px);
  padding: 12px 16px;
  font-family: var(--font-mono);
  font-size: 0.86rem;
  line-height: 1.5;
  white-space: pre-wrap;
  overflow-wrap: anywhere;
  width: 100%;
  max-width: 100%;
  height: 240px;
  min-height: 240px;
  max-height: max(240px, 70vh);
  resize: vertical;
  overflow-x: auto;
  overflow-y: auto;
  overscroll-behavior: contain;
  box-sizing: border-box;
  scrollbar-width: thin;
  scrollbar-color: var(--scroll-thumb) transparent;
}

.console::-webkit-scrollbar {
  width: 6px;
  height: 6px;
}

.console::-webkit-scrollbar-track {
  background: transparent;
}

.console::-webkit-scrollbar-thumb {
  background: var(--scroll-thumb);
  border-radius: 999px;
}

.python-vars-panel {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.python-vars-panel__row {
  margin-bottom: 0;
}

.python-vars-panel__row .form-label {
  font-family: var(--font-mono);
  font-size: 0.875rem;
}

.btn-sm {
  padding: 6px 12px;
  font-size: 0.85rem;
}

.text-error {
  color: var(--color-error);
}

.text-success {
  color: var(--color-success);
}

@media (max-width: 1024px) {
  .solve-layout {
    grid-template-columns: 1fr;
  }

  .solve-sidebar {
    position: static;
    max-height: none;
    overflow: visible;
    padding: 16px;
  }

  .solve-sidebar__header,
  .solve-sidebar__footer {
    padding: 0;
  }

  .solve-nav {
    flex: none;
    overflow: visible;
    padding: 0;
  }
}

/* --- Notifications (стр. 5) --- */

.notification-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.notification-item {
  padding: 16px 20px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-bg);
}

.notification-item--unread {
  border-color: color-mix(in srgb, var(--color-accent) 35%, var(--color-border));
  background: color-mix(in srgb, var(--color-accent) 6%, var(--color-bg));
}

.notification-item__meta {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 8px;
}

.notification-item__title {
  font-size: 1rem;
  font-weight: 600;
  margin: 0 0 4px;
}

.notification-item__body {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px;
  margin-top: 8px;
}

.notification-item__score {
  margin: 0;
  color: var(--color-text-secondary);
  font-size: 0.92rem;
  overflow-wrap: anywhere;
}

.notification-item__score--pre {
  display: block;
  flex: 1 1 100%;
  white-space: pre-line;
}

/* --- Stage 10: dashboards / stats --- */

.text-sm {
  font-size: 0.875rem;
}

.list-plain {
  list-style: none;
  margin: 0;
  padding: 0;
}

.list-plain__item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 10px 0;
  border-bottom: 1px solid var(--color-border);
}

.list-plain__item--start {
  justify-content: flex-start;
  flex-wrap: wrap;
}

.list-plain__item:last-child {
  border-bottom: none;
}

.student-active-works {
  display: flex;
  flex-direction: column;
  gap: 8px;
  min-width: 240px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.student-active-works__row {
  display: flex;
  align-items: center;
  gap: 12px;
  min-height: 28px;
  white-space: normal;
  line-height: 1.25;
}

.student-active-works__name {
  flex: 1 1 auto;
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  line-height: 1.25;
}

.student-active-works .badge {
  flex: 0 0 7.75rem;
  box-sizing: border-box;
  justify-content: flex-start;
  line-height: 1.25;
  margin: 0;
}

.review-task {
  min-width: 0;
  padding: 14px 16px;
}

.review-task__bar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px 14px;
  cursor: pointer;
}

.review-task__num {
  font-weight: 800;
  font-size: 0.95rem;
  font-variant-numeric: tabular-nums;
  letter-spacing: -0.03em;
  line-height: 1;
}

.review-task__num--long {
  font-size: 0.68rem;
  letter-spacing: -0.04em;
  padding: 0 4px;
  text-align: center;
}

.review-task .hw-row__title {
  display: flex;
  align-items: center;
  gap: 6px;
  min-width: 0;
}

.review-task .hw-row__title > span {
  min-width: 0;
}

.review-task .hw-row__main {
  min-width: 140px;
  flex: 1 1 160px;
}

.review-task .kompege-id {
  margin-left: 0;
}

.review-task__flags {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
}

.review-task__flags .badge {
  white-space: nowrap;
}

.review-task__stats {
  display: flex;
  align-items: stretch;
  gap: 6px;
  margin-left: auto;
}

.review-task__stat {
  min-width: 58px;
  padding: 6px 10px;
  text-align: center;
  border-radius: 12px;
  background: var(--color-bg-secondary);
}

.review-task__stat-value {
  font-weight: 800;
  font-size: 0.88rem;
  font-variant-numeric: tabular-nums;
  color: var(--color-text);
  line-height: 1.15;
}

.review-task__stat-max {
  font-weight: 700;
  font-size: 0.72rem;
  color: var(--color-text-secondary);
}

.review-task__stat-label {
  font-size: 0.62rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--color-text-secondary);
  margin-top: 2px;
}

.review-task__stat.review-task__stat--rating {
  background: var(--color-purple-bg);
}

.review-task__stat.review-task__stat--rating .review-task__stat-value,
.review-task__stat.review-task__stat--rating .review-task__stat-label {
  color: var(--color-purple-fg);
}

.review-task__stat--ok {
  background: var(--color-accent-tint);
}

.review-task__stat--ok .review-task__stat-value {
  color: var(--color-ghost-fg);
}

.review-task__stat--warn {
  background: var(--color-orange-bg);
}

.review-task__stat--warn .review-task__stat-value,
.review-task__stat--warn .review-task__stat-label {
  color: var(--color-orange-fg);
}

.review-task__stat--alert {
  background: var(--color-coral-bg);
}

.review-task__stat--alert .review-task__stat-value,
.review-task__stat--alert .review-task__stat-label {
  color: var(--color-coral-fg);
}

.review-task .hw-row__action {
  margin-left: 0;
}

.review-task .js-review-expand .btn-ico {
  transition: transform var(--transition-fast);
}

.review-task .js-review-expand[aria-expanded="true"] .btn-ico {
  transform: rotate(180deg);
}

.review-task.is-open {
  border-color: rgba(69, 184, 120, 0.28);
}

.review-work__list {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.review-work__action {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 14px;
  padding: 14px 16px;
  border-radius: 16px;
  background: var(--color-bg-secondary);
}

.review-work__action--return {
  align-items: flex-start;
}

.review-work__action--return .hw-row__icon {
  margin-top: 2px;
}

.review-work__action .hw-row__main {
  flex: 1 1 220px;
  min-width: 180px;
}

.review-work__action .hw-row__action {
  margin-left: auto;
}

.review-work__comment {
  margin-top: 10px;
}

@media (max-width: 720px) {
  .review-work__action .hw-row__action {
    margin-left: 0;
    width: 100%;
  }

  .review-work__action .hw-row__action .btn {
    width: 100%;
    justify-content: center;
  }
}

@media (max-width: 960px) {
  .review-task__stats {
    margin-left: 0;
    width: 100%;
  }

  .review-task .hw-row__action {
    margin-left: auto;
  }
}

.review-task__body {
  margin-top: 16px;
  padding-top: 16px;
  border-top: 1px solid var(--color-border-light, #e5e5ea);
}

.review-task__subtitle {
  margin: 16px 0 8px;
  font-size: 1rem;
}

.review-comment {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  margin-top: 10px;
}

.review-comment__body {
  min-width: 0;
}

.review-comment__name {
  font-weight: 700;
  font-size: 0.88rem;
}

.review-comment__meta {
  margin-left: 6px;
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--color-text-secondary);
}

.review-comment p {
  margin: 4px 0 0;
}

.review-task__attempt {
  margin-bottom: 16px;
  padding-top: 12px;
  border-top: 1px solid var(--color-border-light, #e5e5ea);
}

.review-attempts {
  margin-top: 16px;
}

.review-attempts__bar {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px 10px;
  padding: 10px 12px;
  border-radius: 14px;
  border: 1px solid transparent;
  background: var(--color-bg-secondary);
  cursor: pointer;
}

.review-attempts__title {
  margin: 0;
  font-size: 1rem;
  font-weight: 600;
}

.review-attempts__bar .btn {
  margin-left: auto;
}

.review-attempts__bar .btn-ico {
  transition: transform var(--transition-fast);
}

.review-attempts__bar .js-attempts-toggle[aria-expanded="true"] .btn-ico {
  transform: rotate(180deg);
}

.review-attempts.is-open .review-attempts__bar {
  border-color: rgba(69, 184, 120, 0.28);
  background: var(--color-bg);
}

.review-attempts__body {
  margin-top: 4px;
}

.teacher-notes {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.teacher-notes__label {
  font-size: 0.68rem;
  font-weight: 800;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--color-text-secondary);
}

.teacher-note {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  padding: 12px 14px;
  border-radius: 14px;
  background: color-mix(in srgb, var(--color-accent) 8%, var(--color-bg));
  border: 1px solid color-mix(in srgb, var(--color-accent) 22%, var(--color-border));
}

.teacher-note__body {
  min-width: 0;
  flex: 1;
}

.teacher-note__meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 6px 8px;
}

.teacher-note__name {
  font-weight: 800;
  font-size: 0.88rem;
}

.teacher-note__meta time {
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--color-text-secondary);
}

.teacher-note p {
  margin: 6px 0 0;
  overflow-wrap: anywhere;
}

.hw-row__notes {
  flex: 1 0 100%;
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.teacher-notes-card__next {
  margin-top: 16px;
}

.teacher-notes-group + .teacher-notes-group {
  margin-top: 16px;
}

.teacher-notes-group__title {
  margin: 0 0 8px;
  font-size: 0.95rem;
}

@media (max-width: 720px) {
  .review-attempts__bar .btn {
    margin-left: 0;
  }
}

.table-students td {
  vertical-align: top;
}

.table-students td .flex.items-center {
  min-height: 28px;
}

.table-students .btn-sm {
  min-height: 32px;
  box-sizing: border-box;
}

.bar-chart {
  display: flex;
  align-items: flex-end;
  gap: 3px;
  height: 120px;
  padding-top: 8px;
}

.bar-chart__col {
  flex: 1;
  height: 100%;
  display: flex;
  align-items: flex-end;
  min-width: 0;
}

.bar-chart__bar {
  width: 100%;
  min-height: 2px;
  background: var(--gradient-accent);
  border-radius: 3px 3px 0 0;
  transition: height 0.2s ease;
}

.hbar-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.hbar-list__row {
  display: grid;
  grid-template-columns: minmax(140px, 240px) 1fr 48px;
  align-items: center;
  gap: 12px;
}

.hbar-list__label {
  font-size: 0.9rem;
  overflow: hidden;
  min-width: 0;
  display: flex;
  align-items: center;
}

.hbar-list__value {
  font-size: 0.875rem;
  color: var(--color-text-secondary);
  text-align: right;
}

.drag-handle {
  cursor: grab;
  user-select: none;
}

.topic-order {
  font-variant-numeric: tabular-nums;
  white-space: nowrap;
}

tr.is-dragging {
  opacity: 0.5;
}

tr.is-drag-over {
  outline: 1px dashed var(--color-accent);
}

.homework-list__drag-col {
  width: 36px;
  vertical-align: middle;
}

.topic-card {
  text-decoration: none;
  color: inherit;
  transition: transform 0.15s ease, box-shadow 0.15s ease;
}

.topic-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

/* —— Calendar (стр. 18a / 38) —— */

.calendar-toolbar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 16px;
}

.calendar-toolbar__nav {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
}

.assign-pick-search {
  display: flex;
  flex-wrap: nowrap;
  align-items: center;
  gap: 8px;
  margin-right: 16px;
  flex: none;
}

.assign-pick-search__label {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.assign-pick-search__input {
  width: 12.5rem;
  flex: none;
  height: 38px;
  padding: 0 12px;
  box-sizing: border-box;
}

.assign-pick-search .btn {
  flex: none;
  white-space: nowrap;
  height: 38px;
  padding-top: 0;
  padding-bottom: 0;
}

.cal-nav-btn {
  width: 38px;
  height: 38px;
  border-radius: 12px;
  border: 1px solid var(--color-border);
  background: var(--color-bg);
  color: var(--color-text-secondary);
  display: grid;
  place-items: center;
  text-decoration: none;
  flex: none;
  transition: color var(--transition-fast), border-color var(--transition-fast);
}

.cal-nav-btn svg {
  display: block;
}

.cal-nav-btn:hover {
  color: var(--color-accent-to);
  border-color: rgba(69, 184, 120, 0.4);
}

.cal-nav-btn--wide {
  width: auto;
  padding: 0 16px;
  font-weight: 800;
  font-size: 0.8rem;
}

.cal-nav-btn.is-on {
  color: var(--color-ghost-fg);
  border-color: rgba(69, 184, 120, 0.45);
  background: var(--color-accent-tint);
  box-shadow: var(--shadow-sm);
}

.calendar-toolbar__label {
  margin-left: 8px;
  font-size: 1.08rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  text-transform: capitalize;
  min-width: 150px;
  color: var(--color-text);
}

.cal-seg {
  display: flex;
  flex-wrap: wrap;
  background: var(--color-bg-secondary);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-pill);
  padding: 3px;
  gap: 2px;
}

.cal-seg__item {
  border: 0;
  background: transparent;
  border-radius: var(--radius-pill);
  padding: 7px 14px;
  font-weight: 800;
  font-size: 0.76rem;
  color: var(--color-text-secondary);
  text-decoration: none;
  transition: background var(--transition-fast), color var(--transition-fast),
    box-shadow var(--transition-fast);
}

.cal-seg__item:hover {
  color: var(--color-text);
}

.cal-seg__item.is-on {
  background: var(--color-bg);
  color: var(--color-ghost-fg);
  box-shadow: var(--shadow-sm);
}

.calendar-legend {
  display: flex;
  gap: 16px;
  align-items: center;
  font-size: 0.875rem;
  color: var(--color-text-secondary);
}

.calendar-legend__item {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.calendar-month__head,
.calendar-month__week {
  display: grid;
  grid-template-columns: repeat(7, minmax(0, 1fr));
}

.calendar-month__wd {
  padding: 8px;
  text-align: center;
  font-size: 0.8rem;
  color: var(--color-text-secondary);
  text-transform: uppercase;
  border-bottom: 1px solid var(--color-border-light);
}

.calendar-month__day {
  display: block;
  min-height: 96px;
  padding: 6px;
  text-decoration: none;
  color: inherit;
  border-right: 1px solid var(--color-border-light);
  border-bottom: 1px solid var(--color-border-light);
  transition: background 0.15s ease;
}

.calendar-month__day:hover {
  background: var(--color-bg-secondary);
  color: inherit;
}

.calendar-month__day.is-out {
  opacity: 0.45;
}

.calendar-month__day.is-today {
  background: rgba(69, 184, 120, 0.08);
}

.calendar-month__num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 24px;
  height: 24px;
  font-size: 0.85rem;
  font-weight: 600;
  border-radius: 50%;
}

.calendar-month__day.is-today .calendar-month__num {
  background: var(--color-accent);
  color: #fff;
}

.calendar-month__items {
  list-style: none;
  margin: 4px 0 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.calendar-month__more {
  font-size: 0.75rem;
  color: var(--color-text-tertiary);
  padding-left: 4px;
}

.badge-cal {
  flex-shrink: 0;
  padding: 2px 8px;
  font-size: 0.68rem;
  line-height: 1.2;
  gap: 4px;
}

.badge-cal::before {
  width: 5px;
  height: 5px;
}

.cal-item {
  display: flex;
  align-items: flex-start;
  gap: 6px;
  min-width: 0;
  font-size: 0.78rem;
  line-height: 1.35;
  color: var(--color-text);
  text-decoration: none;
  background: none;
  padding: 0;
}

.cal-item--link:hover,
.cal-item--link:hover .cal-item__title {
  color: var(--color-accent);
}

.cal-item--block {
  align-items: center;
  gap: 10px;
  padding: 4px 0;
}

.cal-item__body {
  display: flex;
  flex-direction: column;
  gap: 2px;
  min-width: 0;
}

.cal-item__time {
  color: var(--color-text-secondary);
  margin-right: 4px;
  font-variant-numeric: tabular-nums;
}

.cal-item__title {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  color: inherit;
  font-weight: 500;
}

.cal-item--block .cal-item__title {
  white-space: normal;
}

.calendar-week__grid {
  display: grid;
  grid-template-columns: repeat(7, minmax(0, 1fr));
  gap: 0;
}

.calendar-week__col {
  min-height: 220px;
  padding: 8px;
  border-right: 1px solid var(--color-border-light);
}

.calendar-week__col:last-child {
  border-right: none;
}

.calendar-week__col.is-today {
  background: rgba(69, 184, 120, 0.06);
}

.calendar-week__head {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2px;
  margin-bottom: 8px;
  text-decoration: none;
  color: inherit;
}

.calendar-week__items {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.calendar-week__items .cal-item {
  flex-wrap: wrap;
}

.calendar-day__list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.calendar-day .hw-list {
  margin-top: 4px;
}

.hw-row--calendar .hw-row__action {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  justify-content: flex-end;
}

.calendar-day__row {
  display: grid;
  grid-template-columns: 100px 1fr;
  gap: 12px;
  align-items: center;
  padding: 10px 0;
  border-bottom: 1px solid var(--color-border-light);
}

.calendar-day__row:last-child {
  border-bottom: none;
}

.calendar-day__time {
  font-variant-numeric: tabular-nums;
  color: var(--color-text-secondary);
  font-size: 0.9rem;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.form-row--3 {
  grid-template-columns: 1fr 1fr 1fr;
}

.checkbox-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
  max-height: 280px;
  overflow: auto;
}

.modal-open {
  overflow: hidden;
}

.modal {
  position: fixed;
  inset: 0;
  z-index: 1000;
  display: none;
  align-items: center;
  justify-content: center;
  padding: 24px;
}

.modal.is-open {
  display: flex;
}

.modal__backdrop {
  position: absolute;
  inset: 0;
  background: rgba(29, 29, 31, 0.4);
  backdrop-filter: blur(4px);
}

.modal__dialog {
  position: relative;
  z-index: 1;
  width: min(520px, 100%);
  max-height: calc(100vh - 48px);
  overflow: auto;
  padding: 20px 24px;
  box-shadow: var(--shadow-lg, 0 16px 48px rgba(0, 0, 0, 0.18));
}

[data-calendar-modal] .modal__dialog {
  width: min(560px, 100%);
}

[data-generate-variant-modal] .modal__dialog {
  display: flex;
  flex-direction: column;
  width: min(480px, 100%);
  max-height: calc(100vh - 48px);
  overflow: hidden;
  padding: 20px 10px 20px 22px;
}

[data-generate-variant-modal] .modal__dialog .card__header {
  flex: none;
  padding-right: 12px;
}

[data-generate-variant-modal] .modal__body {
  flex: 1 1 auto;
  min-height: 0;
  overflow-x: hidden;
  overflow-y: auto;
  padding-right: 12px;
  overscroll-behavior: contain;
}

[data-generate-variant-modal] .form-group + .profile-notify__section {
  margin-top: 12px;
}

[data-generate-variant-modal] .profile-notify__section {
  margin: 16px 0 8px;
}

[data-generate-variant-modal] .gen-section {
  display: flex;
  flex-direction: row;
  flex-wrap: nowrap;
  align-items: center;
  gap: 10px;
}

[data-generate-variant-modal] .gen-section__icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  flex: none;
}

[data-generate-variant-modal] .gen-section__icon svg {
  display: block;
}

[data-generate-variant-modal] .gen-section__label {
  line-height: 1;
}

[data-generate-variant-modal] .profile-fields {
  gap: 8px;
}

[data-generate-variant-modal] .gen-row {
  padding: 10px 14px;
  user-select: none;
}

[data-generate-variant-modal] .form-hint {
  margin: 8px 0 16px;
}

.gen-rows {
  margin-bottom: 4px;
}

.gen-row .gen-toggle {
  margin-left: auto;
}

.gen-toggle {
  position: relative;
  display: grid;
  grid-template-columns: 1fr 1fr;
  align-items: center;
  flex: none;
  width: 68px;
  height: 36px;
  padding: 3px;
  border: 1px solid transparent;
  border-radius: var(--radius-pill);
  background: var(--color-accent-tint);
  color: var(--color-ghost-fg);
  cursor: pointer;
  transition: background var(--transition-fast), border-color var(--transition-fast),
    box-shadow var(--transition-fast), transform var(--transition-fast);
}

.gen-toggle__input {
  position: absolute;
  inset: 0;
  z-index: 3;
  margin: 0;
  width: 100%;
  height: 100%;
  opacity: 0;
  cursor: pointer;
  appearance: none;
  -webkit-appearance: none;
}

.gen-toggle__knob {
  position: absolute;
  top: 3px;
  left: 3px;
  z-index: 0;
  width: calc((100% - 6px) / 2);
  height: calc(100% - 6px);
  border-radius: var(--radius-pill);
  background: var(--color-bg);
  box-shadow: var(--shadow-sm);
  pointer-events: none;
  transition: transform var(--transition-base), background var(--transition-fast);
}

.gen-toggle__input:checked ~ .gen-toggle__knob {
  transform: translateX(100%);
}

.gen-toggle__side {
  position: relative;
  z-index: 1;
  display: grid;
  place-items: center;
  color: var(--color-text-tertiary);
  pointer-events: none;
  transition: color var(--transition-fast);
}

.gen-toggle__side svg {
  display: block;
}

.gen-toggle__input:not(:checked) ~ [data-gen-off],
.gen-toggle__input:checked ~ [data-gen-on] {
  color: var(--color-ghost-fg);
}

.gen-toggle:hover {
  background: var(--color-ghost-hover);
  border-color: rgba(69, 184, 120, 0.35);
}

.gen-toggle:hover .gen-toggle__knob {
  background: var(--color-bg);
  box-shadow: 0 6px 14px rgba(69, 184, 120, 0.18);
}

.gen-row:active .gen-toggle {
  transform: scale(0.97);
}

.gen-toggle:has(.gen-toggle__input:focus-visible) {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
}

@media (prefers-reduced-motion: reduce) {
  .gen-toggle,
  .gen-toggle__knob,
  .gen-toggle__side {
    transition: none;
  }
}

.recurrence-fields {
  display: flex;
  flex-direction: column;
  gap: 4px;
  margin-bottom: 8px;
}

.weekday-pills {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.weekday-pill {
  display: inline-flex;
  margin: 0;
  cursor: pointer;
}

.weekday-pill input {
  position: absolute;
  width: 1px;
  height: 1px;
  opacity: 0;
  pointer-events: none;
}

.weekday-pill span {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 8px 14px;
  border-radius: var(--radius-pill);
  background: var(--color-bg-secondary);
  border: 1px solid var(--color-border);
  font-size: 0.82rem;
  font-weight: 700;
  color: var(--color-text-secondary);
  transition: background var(--transition-fast), color var(--transition-fast),
    box-shadow var(--transition-fast), border-color var(--transition-fast);
}

.weekday-pill:hover span {
  color: var(--color-text);
}

.weekday-pill:has(input:checked) span {
  background: var(--color-bg);
  color: var(--color-ghost-fg);
  border-color: transparent;
  box-shadow: var(--shadow-sm);
}

.weekday-pill input:focus-visible + span {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
}

.scope-choices {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.scope-choices form {
  margin: 0;
}

.scope-choice {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 4px;
  width: 100%;
  padding: 14px 16px;
  border: 0;
  border-radius: 16px;
  background: var(--color-bg-secondary);
  color: inherit;
  text-align: left;
  text-decoration: none;
  cursor: pointer;
  font: inherit;
  transition: background var(--transition-fast), color var(--transition-fast);
}

.scope-choice:hover {
  background: var(--color-accent-tint);
  color: inherit;
}

.scope-choice--danger:hover {
  background: rgba(241, 75, 107, 0.12);
}

.scope-choice__title {
  font-weight: 800;
  color: var(--color-text);
}

.scope-choice__hint {
  font-size: 0.85rem;
  color: var(--color-text-secondary);
}

.event-view__students {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.event-view__description {
  white-space: pre-wrap;
}

.inline-form {
  display: inline;
  margin: 0;
}

.mini-calendar__head {
  margin-bottom: 8px;
  text-transform: capitalize;
}

.mini-calendar__weekdays,
.mini-calendar__week {
  display: grid;
  grid-template-columns: repeat(7, minmax(0, 1fr));
  gap: 2px;
}

.mini-calendar__weekdays span {
  text-align: center;
  font-size: 0.7rem;
  color: var(--color-text-tertiary);
  text-transform: uppercase;
  padding: 4px 0;
}

.mini-calendar__day {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: flex-start;
  min-height: 48px;
  padding: 4px 2px 6px;
  text-decoration: none;
  color: inherit;
  font-size: 0.8rem;
  border-radius: 6px;
  gap: 2px;
}

.mini-calendar__day:hover {
  background: var(--color-bg-secondary);
  color: inherit;
}

.mini-calendar__day.is-out {
  opacity: 0.35;
}

.mini-calendar__day.is-today {
  background: rgba(69, 184, 120, 0.12);
  font-weight: 600;
}

.mini-calendar__num {
  line-height: 1.2;
}

.mini-calendar__tags {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2px;
  width: 100%;
}

.mini-calendar__tags .badge-cal {
  padding: 1px 5px;
  font-size: 0.58rem;
  max-width: 100%;
}

@media (max-width: 1024px) {
  .calendar-week__grid {
    grid-template-columns: 1fr;
  }

  .calendar-week__col {
    min-height: 0;
    border-right: none;
    border-bottom: 1px solid var(--color-border-light);
  }

  .calendar-month__day {
    min-height: 64px;
  }

  .form-row {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 640px) {
  .calendar-month__items {
    display: none;
  }

  .calendar-day__row {
    grid-template-columns: 1fr;
  }
}

/* ---------- Карточки .tt: тренажёр типов (стр. 18), курс Python (стр. 15), успеваемость (стр. 14) ---------- */

.stat-card__bar {
  margin-top: 12px;
  width: 100%;
  max-width: 140px;
  height: 8px;
  border-radius: 999px;
  background: var(--color-accent-tint);
  overflow: hidden;
}

.stat-card__bar > span {
  display: block;
  height: 100%;
  border-radius: inherit;
  background: var(--gradient-accent);
}

.tt-toolbar {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
}

.tt-search-wrap {
  display: flex;
  align-items: stretch;
  gap: 8px;
  flex: 1;
  min-width: 220px;
  max-width: 440px;
}

.tt-search-wrap .btn {
  flex: none;
  height: auto;
  min-height: 0;
  padding-top: 0;
  padding-bottom: 0;
  align-self: stretch;
}

.tt-search {
  display: flex;
  align-items: center;
  gap: 8px;
  flex: 1;
  min-width: 0;
  background: var(--color-bg-secondary);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-pill);
  padding: 8px 16px;
}

.tt-search__ico {
  display: grid;
  place-items: center;
  color: var(--color-text-tertiary, #8a93a8);
  flex: none;
}

.tt-search input {
  border: 0;
  outline: 0;
  background: transparent;
  flex: 1;
  min-width: 0;
  font: inherit;
  font-weight: 600;
  font-size: 0.86rem;
  color: var(--color-text);
}

.tt-search input::placeholder {
  color: var(--color-text-tertiary, #8a93a8);
  font-weight: 600;
}

.tt-toolbar__count {
  margin-left: auto;
  font-size: 0.82rem;
  font-weight: 600;
}

.types-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(min(250px, 100%), 1fr));
  gap: 16px;
}

.tt {
  display: flex;
  flex-direction: column;
  gap: 10px;
  transition: transform var(--transition-fast, 0.15s);
}

.tt:hover {
  transform: translateY(-2px);
}

.tt__head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
}

.tt__num {
  width: 42px;
  height: 42px;
  border-radius: 13px;
  color: #fff;
  font-weight: 800;
  font-size: 1rem;
  display: grid;
  place-items: center;
  flex: none;
}

.tt__num--green {
  background: linear-gradient(135deg, #5fd68f, #2fa765);
  box-shadow: 0 8px 16px rgba(69, 184, 120, 0.3);
}

.tt__num--blue {
  background: linear-gradient(135deg, #6fc0f5, #3aa0e8);
  box-shadow: 0 8px 16px rgba(58, 160, 232, 0.28);
}

.tt__num--purple {
  background: linear-gradient(135deg, #c465f0, #a834dc);
  box-shadow: 0 8px 16px rgba(168, 52, 220, 0.28);
}

.tt__num--orange {
  background: linear-gradient(135deg, #ffb25c, #f68b1f);
  box-shadow: 0 8px 16px rgba(246, 139, 31, 0.28);
}

.tt__num--coral {
  background: linear-gradient(135deg, #ff7a90, #f14b6b);
  box-shadow: 0 8px 16px rgba(241, 75, 107, 0.28);
}

.tt__num--lock {
  background: var(--color-lock-bg);
  color: var(--color-text-secondary);
  box-shadow: none;
}

.tt__title {
  margin: 0;
  font-size: 0.98rem;
  font-weight: 800;
  letter-spacing: -0.01em;
  line-height: 1.3;
}

.tt__title a {
  color: inherit;
  text-decoration: none;
}

.tt__title a:hover {
  color: var(--color-accent-to);
}

.tt__desc {
  margin: 0;
  color: var(--color-text-secondary);
  font-size: 0.82rem;
  font-weight: 600;
  flex: 1;
}

.tt__progress {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.tt__progress-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  font-size: 0.74rem;
  font-weight: 700;
  color: var(--color-text-secondary);
}

.tt__progress-meta strong {
  color: var(--color-text);
  font-weight: 800;
}

.tt__progress-bar {
  height: 8px;
  border-radius: 999px;
  background: var(--color-accent-tint);
  overflow: hidden;
}

.tt__progress-bar > span {
  display: block;
  height: 100%;
  border-radius: inherit;
  background: var(--gradient-accent);
}

.tt__actions {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin-top: 4px;
}

.tt--locked {
  background: var(--color-bg-secondary);
  box-shadow: none;
  border: 1px dashed var(--color-border);
}

.tt--locked .tt__title {
  color: var(--color-text-secondary);
}

.tt--locked .tt__progress-bar {
  background: rgba(31, 45, 90, 0.08);
}

.topic-card--locked {
  opacity: 0.72;
}

.tt-empty {
  text-align: center;
  padding: 40px 16px;
  color: var(--color-text-tertiary, #8a93a8);
  font-weight: 700;
  font-size: 0.9rem;
}

.tt-empty__ico {
  display: block;
  margin: 0 auto 12px;
  opacity: 0.55;
  color: var(--color-accent);
}

.tt-notes {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.tt-notes li {
  display: flex;
  gap: 10px;
  align-items: flex-start;
  font-size: 0.84rem;
  color: var(--color-text-secondary);
  font-weight: 600;
}

.tt-notes__ico {
  flex: none;
  color: var(--color-accent);
  margin-top: 2px;
}

@media (max-width: 760px) {
  .tt-toolbar__count {
    margin-left: 0;
    width: 100%;
  }

  .tt-search-wrap {
    max-width: none;
    width: 100%;
  }
}

/* Required-task star (variant partial submit, п.41) */

.task-num-cell {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.task-req-star,
.task-req-icon {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: auto;
  height: auto;
  min-width: 0;
  padding: 2px;
  margin: 0;
  border: 0;
  border-radius: 4px;
  background: transparent;
  box-shadow: none;
  color: inherit;
  font: inherit;
  line-height: 0;
  cursor: pointer;
  flex-shrink: 0;
  appearance: none;
  -webkit-appearance: none;
}

.task-req-star:hover,
.task-req-icon:hover,
.task-req-star:active,
.task-req-icon:active {
  background: transparent;
  box-shadow: none;
  transform: none;
}

.task-req-star svg,
.task-req-icon svg {
  display: block;
}

.task-req-star svg {
  fill: var(--color-accent);
  stroke: var(--color-accent);
}

.task-req-icon svg {
  fill: none;
  stroke: var(--color-text-secondary);
}

.task-req-icon:hover svg,
.task-req-icon.is-open svg {
  stroke: var(--color-accent);
}

.task-req-star:hover svg,
.task-req-star.is-open svg {
  fill: var(--color-accent-to);
  stroke: var(--color-accent-to);
}

.task-req-star:focus-visible,
.task-req-icon:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
}

.task-req-tip__bubble,
.task-req-star__tip {
  display: none;
  position: fixed;
  z-index: 80;
  max-width: 260px;
  padding: 8px 12px;
  border-radius: 12px;
  background: var(--color-text);
  color: var(--color-bg);
  font-size: 0.78rem;
  font-weight: 500;
  line-height: 1.35;
  box-shadow: var(--shadow-md, 0 8px 24px rgba(31, 45, 90, 0.18));
  pointer-events: none;
  white-space: normal;
  transform: translateY(-50%);
}

.task-req-tip.is-open .task-req-tip__bubble,
.task-req-star.is-open .task-req-star__tip {
  display: block;
}

.badge-neutral {
  background: var(--color-bg-secondary);
  color: var(--color-text-secondary);
}

/* Parent satellite cabinet (п.114): same progress page, no interaction. */
html.parent-readonly .app-main {
  pointer-events: none;
}

html.parent-readonly .app-main a,
html.parent-readonly .app-main button {
  cursor: default;
}

.parent-cred__mono {
  font-family: var(--font-mono, ui-monospace, monospace);
  font-weight: 650;
  letter-spacing: 0.01em;
}

@media (max-width: 900px) {
  .app-header__date {
    display: none;
  }
}

/* Last: mobile overflow overrides so earlier min-widths cannot win. */
@media (max-width: 640px) {
  .app-header {
    gap: 8px;
    padding: 0 10px;
  }

  .app-header__logo img,
  .app-sidebar__brand img {
    height: 26px;
  }

  .app-header__title {
    font-size: 0.95rem;
  }

  .app-header__date {
    display: none;
  }

  .app-header__actions {
    gap: 6px;
    min-width: 0;
  }

  .app-header__compiler.btn.btn-sm {
    width: 36px;
    height: 36px;
    padding: 0;
    gap: 0;
    border-radius: 50%;
  }

  .theme-toggle {
    width: 52px;
    height: 32px;
  }

  .profile-menu__trigger {
    padding: 2px;
  }

  .card-grid {
    grid-template-columns: 1fr;
  }

  /* Compact number tiles stay 2×2; content cards (profile, forms) stay 1 col. */
  .card-grid:has(> .stat-card),
  .card-grid--dense {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .card-grid.card-grid--2,
  .card-grid.card-grid--3 {
    grid-template-columns: 1fr;
  }

  .card-grid > .card,
  .profile-field,
  h1 {
    min-width: 0;
  }

  .stat-card__label {
    overflow-wrap: anywhere;
  }

  .dash-row {
    flex-wrap: wrap;
  }

  .dash-row__title,
  .dash-row__title--person > span {
    white-space: normal;
    overflow: visible;
    text-overflow: unset;
  }

  .bank-task__header {
    flex-direction: column;
    align-items: stretch;
  }

  .bank-task__actions {
    width: 100%;
    justify-content: flex-start;
  }

  .hbar-list__row {
    grid-template-columns: minmax(0, 1fr) 44px;
  }

  .hbar-list__label {
    grid-column: 1 / -1;
  }

  .filter-field,
  .filter-field--grow {
    flex: 1 1 100%;
    min-width: 0;
    width: 100%;
  }

  .filter-field select,
  .filter-field input {
    width: 100%;
    max-width: 100%;
    box-sizing: border-box;
  }

  .assign-pick-search {
    flex-wrap: wrap;
    width: 100%;
    margin-right: 0;
  }

  .assign-pick-search__input {
    flex: 1 1 8rem;
    width: auto;
    min-width: 0;
  }

  .card:has(.table) {
    overflow-x: auto;
  }
}

/* 
 * FIX: Принудительно сохраняем горизонтальное расположение 
 * для фильтров внутри заголовков карточек (.card__header),
 * даже на узких экранах.
 */
 .card__header .filters .filter-field,
 .card__header .filters .filter-field--grow {
   flex: 0 0 auto !important; /* Запрещаем сжатие и растяжение */
   width: auto !important;    /* Ширина по содержимому */
   min-width: unset;          /* Сбрасываем минимальную ширину, если она мешает */
 }
 
 /* Дополнительно: убедимся, что сами инпуты внутри не растягиваются */
 .card__header .filters .filter-field select,
 .card__header .filters .filter-field input {
   width: auto;
   max-width: 100%;
 }