/**
 * Общая тема уроков it.rooms — подключается после встроенных стилей страницы.
 * Переменные совпадают с :root в уроках (--bg, --accent, …), значения — с redesign.
 */

:root {
  --bg: oklch(0.98 0.005 90);
  --card: oklch(0.995 0.003 90);
  --text: oklch(0.18 0.01 250);
  --text-soft: oklch(0.36 0.012 250);
  --accent: oklch(0.60 0.16 145);
  --accent-light: oklch(0.94 0.04 145);
  --ok: oklch(0.52 0.14 150);
  --ok-light: oklch(0.94 0.05 150);
  --err: oklch(0.52 0.2 25);
  --err-light: oklch(0.96 0.04 25);
  --border: oklch(0.88 0.01 90);
  --line: var(--border);
  --shadow: 0 1px 0 oklch(0.88 0.01 90 / 0.65),
    0 1px 2px oklch(0.18 0.01 250 / 0.06);
  --gutter: 24px;
  --max: 1320px;
  --radius: 14px;
  --radius-lg: 22px;
}

html[data-theme="dark"] {
  --bg: oklch(0.18 0.012 250);
  --card: oklch(0.22 0.014 250);
  --text: oklch(0.97 0.005 90);
  --text-soft: oklch(0.74 0.01 90);
  --accent: oklch(0.74 0.16 145);
  --accent-light: oklch(0.30 0.06 145);
  --ok: oklch(0.65 0.14 150);
  --ok-light: oklch(0.28 0.05 150);
  --err: oklch(0.62 0.18 25);
  --err-light: oklch(0.30 0.06 25);
  --border: oklch(0.34 0.014 250);
  --shadow: 0 1px 0 oklch(1 0 0 / 0.05),
    0 1px 2px oklch(0 0 0 / 0.45);
}

html {
  font-family: "Manrope", "Helvetica Neue", Helvetica, Arial, sans-serif;
}

body {
  font-family: inherit !important;
  background: var(--bg) !important;
  color: var(--text) !important;
}

.topnav {
  background: var(--card) !important;
  border-bottom-color: var(--border) !important;
}

.topnav-title {
  color: var(--text) !important;
}

.code-sample,
.command-block,
pre,
code {
  font-family: "JetBrains Mono", ui-monospace, "SF Mono", Menlo, monospace !important;
}

.command-block {
  background: oklch(0.22 0.02 250) !important;
  color: oklch(0.95 0.005 90) !important;
  border: 1px solid var(--border) !important;
}

html[data-theme="dark"] .command-block {
  background: oklch(0.14 0.015 250) !important;
  color: oklch(0.92 0.008 90) !important;
}

.chat-bubble {
  background: oklch(0.90 0.02 250) !important;
  color: var(--text) !important;
  border: 1px solid var(--border);
}

html[data-theme="dark"] .chat-bubble {
  background: oklch(0.28 0.02 250) !important;
}

/* ============================ Courses list (public/courses/*/index.html) ============================ */
.course-list-page {
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  padding: 28px var(--gutter) 72px;
}

.course-list-shell {
  max-width: var(--max);
  margin: 0 auto;
}

.course-list-back {
  display: inline-flex;
  gap: 8px;
  align-items: center;
  font-family: "JetBrains Mono", ui-monospace, "SF Mono", Menlo, monospace;
  font-size: 13px;
  letter-spacing: 0.02em;
  color: var(--text-soft);
  margin-bottom: 18px;
}

.course-list-title {
  font-size: clamp(26px, 3.2vw, 44px);
  letter-spacing: -0.03em;
  line-height: 1.12;
  margin: 0 0 14px;
  font-weight: 600;
}

.course-list-subtitle {
  max-width: 72ch;
  color: var(--text-soft);
  line-height: 1.65;
  font-size: clamp(16px, 1.25vw, 18px);
  margin: 0 0 28px;
}

.discipline {
  font-weight: 600;
  color: var(--text);
  margin-top: 24px;
  margin-bottom: 8px;
  font-size: 1rem;
}

.lesson-list {
  list-style: none;
  counter-reset: lesson;
  padding-left: 0;
  margin: 0;
}

.lesson-list li {
  counter-increment: lesson;
  margin: 8px 0;
}

.lesson-list a {
  color: var(--accent);
  text-decoration: none;
  font-weight: 500;
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 12px 14px;
  background: var(--card);
  border-radius: 8px;
  border: 1px solid var(--line);
}

.lesson-list a::before {
  content: counter(lesson);
  flex: 0 0 auto;
  width: 24px;
  height: 24px;
  border-radius: 999px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-family: "JetBrains Mono", ui-monospace, "SF Mono", Menlo, monospace;
  font-size: 12px;
  line-height: 1;
  color: var(--accent);
  background: var(--accent-light);
  border: 1px solid color-mix(in oklab, var(--accent) 35%, var(--line));
}

.lesson-list a:hover {
  background: var(--accent-light);
  border-color: var(--accent);
}

/* ============================ Lecture pages design (div.lecture) ============================ */
.lecture {
  /*
   * В исходных лекциях используются CSS-переменные, заданные в style.css.
   * Переопределяем их здесь, чтобы все лекции стали в едином стиле it.rooms.
   */
  --header-bg: color-mix(in oklab, var(--accent-light) 40%, var(--bg) 60%);
  --content-bg: var(--bg);
  --text-dark: var(--text);
  --text-white: var(--text);
  --yellow: color-mix(in oklab, var(--accent) 70%, #ffffff 30%);
  --border-light: var(--line);
  --font-sans: "Manrope", "Helvetica Neue", Helvetica, Arial, sans-serif;

  background: var(--bg) !important;
}

.lecture .slide {
  background: var(--bg) !important;
}

.lecture .slide--title {
  background: var(--header-bg) !important;
  color: var(--text-white) !important;
  text-align: left;
}

.lecture .slide-header {
  background: var(--header-bg) !important;
  color: var(--text-white) !important;
  border-bottom: 1px solid var(--line) !important;
}

.lecture .slide-header .logo-divider {
  background: color-mix(in oklab, var(--text) 28%, transparent) !important;
}

.lecture .slide-header .nav-discipline {
  color: var(--text-soft) !important;
}

.lecture .title-institute {
  text-transform: none !important;
  letter-spacing: -0.03em !important;
}

.lecture .title-topic {
  color: var(--text-white) !important;
}

.lecture .title-subtitle {
  color: var(--text-soft) !important;
  font-family: "JetBrains Mono", ui-monospace, "SF Mono", Menlo, monospace !important;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-size: 12px;
  margin-top: 10px;
}

.lecture .slide-body {
  background: var(--bg) !important;
  color: var(--text) !important;
}

.lecture .slide-body h1 {
  color: var(--text) !important;
}

.lecture .slide-text,
.lecture .slide-text li {
  color: var(--text-soft) !important;
}

.lecture .slide-counter {
  color: color-mix(in oklab, var(--text-soft) 70%, transparent) !important;
}