/* Простая читаемая тема: одна колонка, крупный текст, светлая и тёмная схемы. */

:root {
  --bg: #fbfaf8;
  --bg-soft: #f2efea;
  --surface: #ffffff;
  --text: #23201d;
  --text-muted: #6d665e;
  --line: #e2ddd5;
  --accent: #8a5a3b;
  --accent-soft: #f0e6de;
  --radius: 12px;
  --measure: 40rem;
  color-scheme: light dark;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #16151a;
    --bg-soft: #1e1d23;
    --surface: #201f26;
    --text: #ece8e2;
    --text-muted: #a19a92;
    --line: #34323b;
    --accent: #d9a77e;
    --accent-soft: #2c2620;
  }
}

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

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

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: ui-serif, Georgia, "Times New Roman", serif;
  font-size: 1.125rem;
  line-height: 1.7;
  text-rendering: optimizeLegibility;
}

img { max-width: 100%; height: auto; display: block; }

a {
  color: var(--accent);
  text-underline-offset: 0.18em;
  text-decoration-thickness: 1px;
}
a:hover { text-decoration-thickness: 2px; }

.wrap {
  width: 100%;
  max-width: var(--measure);
  margin-inline: auto;
  padding-inline: 1.25rem;
}

.wrap--wide { max-width: 56rem; }

/* Шапка */

.site-header {
  border-bottom: 1px solid var(--line);
  background: var(--bg-soft);
}

.site-header__inner {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 0.5rem 1.25rem;
  padding-block: 1rem;
}

.site-header__title {
  font-size: 1.15rem;
  font-weight: 600;
  margin: 0;
}

.site-header__title a { color: inherit; text-decoration: none; }

.site-header nav {
  display: flex;
  gap: 1rem;
  margin-inline-start: auto;
  font-family: ui-sans-serif, system-ui, sans-serif;
  font-size: 0.9rem;
}

/* Заглавный блок */

.hero { padding-block: 3rem 2rem; }

.hero h1 {
  font-size: clamp(2rem, 6vw, 2.75rem);
  line-height: 1.15;
  margin: 0 0 0.75rem;
  letter-spacing: -0.01em;
}

.hero p {
  margin: 0;
  color: var(--text-muted);
  font-size: 1.15rem;
}

/* Список видео */

.video-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 2.5rem;
}

.card {
  display: grid;
  gap: 1rem;
  grid-template-columns: minmax(0, 1fr);
}

@media (min-width: 44rem) {
  .card { grid-template-columns: 15rem minmax(0, 1fr); align-items: start; }
}

.card__thumb {
  display: block;
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--bg-soft);
  position: relative;
  aspect-ratio: 16 / 9;
}

.card__thumb img { width: 100%; height: 100%; object-fit: cover; }

.card__duration {
  position: absolute;
  right: 0.5rem;
  bottom: 0.5rem;
  background: rgba(0, 0, 0, 0.78);
  color: #fff;
  font-family: ui-sans-serif, system-ui, sans-serif;
  font-size: 0.75rem;
  padding: 0.15rem 0.4rem;
  border-radius: 5px;
}

.card__title {
  margin: 0 0 0.4rem;
  font-size: 1.35rem;
  line-height: 1.25;
}

.card__title a { color: inherit; text-decoration: none; }
.card__title a:hover { color: var(--accent); }

.card__summary { margin: 0 0 0.6rem; color: var(--text-muted); font-size: 1rem; }

.meta {
  font-family: ui-sans-serif, system-ui, sans-serif;
  font-size: 0.85rem;
  color: var(--text-muted);
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem 0.85rem;
  margin: 0;
  list-style: none;
  padding: 0;
}

/* Страница видео */

.article { padding-block: 2rem 4rem; }

.article h1 {
  font-size: clamp(1.7rem, 5vw, 2.4rem);
  line-height: 1.2;
  margin: 0 0 0.75rem;
  letter-spacing: -0.01em;
}

.player {
  position: relative;
  aspect-ratio: 16 / 9;
  border-radius: var(--radius);
  overflow: hidden;
  background: #000;
  margin-block: 1.5rem;
}

.player iframe,
.player button {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  border: 0;
}

/* Превью вместо iframe: YouTube не грузится и не ставит куки, пока не нажали play. */
.player button {
  padding: 0;
  cursor: pointer;
  background: none;
  display: grid;
  place-items: center;
}

.player button img { width: 100%; height: 100%; object-fit: cover; position: absolute; inset: 0; }

.player button::after {
  content: "";
  position: relative;
  width: 68px;
  height: 48px;
  border-radius: 12px;
  background: rgba(200, 30, 30, 0.92) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='white'%3E%3Cpath d='M8 5v14l11-7z'/%3E%3C/svg%3E") no-repeat center / 26px;
}

.player button:hover::after { background-color: rgb(230, 33, 33); }

.callout {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 1.25rem 1.4rem;
  margin-block: 2rem;
}

.callout h2 {
  font-family: ui-sans-serif, system-ui, sans-serif;
  font-size: 0.8rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin: 0 0 0.6rem;
}

.callout p { margin: 0; }
.callout ul { margin: 0; padding-inline-start: 1.2rem; }
.callout li { margin-block: 0.4rem; }

.topics {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  list-style: none;
  padding: 0;
  margin: 1.5rem 0 0;
}

.topics li {
  font-family: ui-sans-serif, system-ui, sans-serif;
  font-size: 0.8rem;
  background: var(--accent-soft);
  color: var(--text);
  padding: 0.2rem 0.6rem;
  border-radius: 999px;
}

/* Оглавление */

.toc { margin-block: 2rem; }

.toc summary {
  cursor: pointer;
  font-family: ui-sans-serif, system-ui, sans-serif;
  font-size: 0.9rem;
  color: var(--text-muted);
}

.toc ol {
  margin: 0.75rem 0 0;
  padding-inline-start: 1.3rem;
  font-size: 1rem;
}

.toc li { margin-block: 0.3rem; }

/* Транскрипт */

.transcript { margin-top: 2.5rem; }

.transcript h2 {
  font-size: 1.35rem;
  line-height: 1.3;
  margin: 2.5rem 0 0.5rem;
  scroll-margin-top: 1.5rem;
}

.transcript p { margin-block: 1.15rem; }

.transcript .stamp {
  font-family: ui-sans-serif, system-ui, sans-serif;
  font-size: 0.78rem;
  color: var(--text-muted);
  text-decoration: none;
  display: inline-block;
  margin-inline-start: 0.5rem;
  vertical-align: middle;
  white-space: nowrap;
}

.transcript .stamp:hover { color: var(--accent); }

.section-note {
  font-family: ui-sans-serif, system-ui, sans-serif;
  font-size: 0.85rem;
  color: var(--text-muted);
  border-inline-start: 3px solid var(--line);
  padding-inline-start: 0.9rem;
  margin-block: 1.5rem;
}

/* Подвал */

.site-footer {
  border-top: 1px solid var(--line);
  margin-top: 4rem;
  padding-block: 2rem 3rem;
  font-family: ui-sans-serif, system-ui, sans-serif;
  font-size: 0.9rem;
  color: var(--text-muted);
}

.site-footer p { margin-block: 0.4rem; }

.skip-link {
  position: absolute;
  left: -9999px;
}

.skip-link:focus {
  left: 1rem;
  top: 1rem;
  z-index: 10;
  background: var(--surface);
  padding: 0.5rem 0.9rem;
  border-radius: 8px;
}

:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; }

@media print {
  .player, .site-header nav, .toc { display: none; }
}