/* =========================================================================
   Золотая пластинка — дизайн-система «старой книги»
   Mobile-first. Жёлтая бумага, перьевой шрифт, мягкое перелистывание.
   ========================================================================= */

:root {
  /* Палитра состаренной бумаги и чернил */
  --paper:        #efe4cb;
  --paper-dark:   #e2d4b3;
  --paper-edge:   #cdb98e;
  --ink:          #3a2c1a;
  --ink-soft:     #5b4a32;
  --ink-faint:    #8a755430;
  --accent:       #7a1f1f;   /* сургучный красный — закладки, акценты */
  --accent-soft:  #9c3b2e;
  --gold:         #9c7a3c;

  --font-hand:    "Marck Script", "Caveat", "Segoe Script", cursive;
  --font-title:   "Caveat", "Marck Script", cursive;
  --font-body:    "EB Garamond", "Old Standard TT", Georgia, "Times New Roman", serif;

  --radius:       6px;
  --shadow-page:  0 18px 50px -20px rgba(40, 28, 12, .55);
  --ease:         cubic-bezier(.22, .61, .36, 1);
}

* { box-sizing: border-box; }

/* Атрибут hidden должен побеждать display из классов ниже */
[hidden] { display: none !important; }

html, body {
  margin: 0;
  min-height: 100%;
}

body {
  font-family: var(--font-body);
  color: var(--ink);
  font-size: 18px;
  line-height: 1.6;
  /* Жёлтая бумага: радиальный тёплый свет + виньетка */
  background-color: #d9c7a0;
  background-image:
    radial-gradient(120% 90% at 50% -10%, #f3ead4 0%, #e4d3ad 55%, #cdb98e 100%);
  background-attachment: fixed;
}

img { max-width: 100%; display: block; }
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

/* ---------- Кнопки ---------- */
.btn {
  font-family: var(--font-body);
  font-size: 1rem;
  border: 1px solid var(--paper-edge);
  background: linear-gradient(#f6efda, #e6d7b6);
  color: var(--ink);
  padding: .6rem 1.1rem;
  border-radius: var(--radius);
  cursor: pointer;
  transition: transform .12s var(--ease), box-shadow .2s var(--ease), background .2s;
  box-shadow: 0 2px 6px rgba(0,0,0,.12);
}
.btn:hover { transform: translateY(-1px); }
.btn:active { transform: translateY(1px); }
.btn--primary {
  background: linear-gradient(var(--accent-soft), var(--accent));
  color: #f6ead0;
  border-color: #5e1717;
}
.btn--link {
  background: none;
  border: none;
  box-shadow: none;
  color: var(--accent);
  text-decoration: underline;
  padding: .4rem .2rem;
}
.btn--link:hover { transform: none; color: var(--accent-soft); }

/* =========================================================================
   КНИГА / КАРКАС
   ========================================================================= */
.book {
  position: relative;
  min-height: 100vh;
  min-height: 100dvh;
  display: flex;
  flex-direction: column;
}

/* Полупрозрачные «глаза Есенина» сверху (placeholder) */
.eyes {
  position: fixed;
  top: 0; left: 50%;
  transform: translateX(-50%);
  width: min(900px, 120%);
  opacity: .10;
  pointer-events: none;
  z-index: 0;
  mask-image: linear-gradient(#000, transparent 85%);
  -webkit-mask-image: linear-gradient(#000, transparent 85%);
}

/* Закладки-навигация */
.ribbon {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: .6rem clamp(.8rem, 4vw, 2rem);
  background: linear-gradient(#efe4ca, #e3d4b1);
  border-bottom: 1px solid var(--paper-edge);
  box-shadow: 0 2px 8px rgba(40,28,12,.12);
}
.ribbon__brand {
  font-family: var(--font-title);
  font-size: 1.6rem;
  color: var(--accent);
}
.ribbon__brand:hover { text-decoration: none; }
.ribbon__links { display: flex; align-items: center; gap: clamp(.6rem, 3vw, 1.4rem); }
.ribbon__links a {
  font-family: var(--font-body);
  font-size: 1rem;
  color: var(--ink-soft);
  background: none; border: none; cursor: pointer;
}
.ribbon__links a:hover { color: var(--accent); text-decoration: none; }

/* Страница-разворот */
.page {
  position: relative;
  z-index: 1;
  flex: 1;
  width: min(900px, 100%);
  margin: clamp(.8rem, 3vw, 2rem) auto 5.5rem;
  padding: clamp(1.4rem, 5vw, 3rem) clamp(1.2rem, 5vw, 3.2rem);
  background-color: var(--paper);
  background-image: url("../img/paper.svg");
  background-size: 320px;
  border: 1px solid var(--paper-edge);
  border-radius: 4px;
  box-shadow: var(--shadow-page);
  outline: none;
}
/* Тень «корешка» слева — намёк на книгу */
.page::before {
  content: "";
  position: absolute;
  top: 0; bottom: 0; left: 0;
  width: 26px;
  background: linear-gradient(90deg, rgba(80,55,25,.18), transparent);
  border-radius: 4px 0 0 4px;
  pointer-events: none;
}

/* ---------- Анимация перелистывания ---------- */
@keyframes pageIn {
  from { opacity: 0; transform: translateY(8px) rotateX(3deg); transform-origin: top center; }
  to   { opacity: 1; transform: none; }
}
@keyframes pageOut {
  from { opacity: 1; transform: none; }
  to   { opacity: 0; transform: translateY(-6px); }
}
.page.is-entering { animation: pageIn .42s var(--ease); }
.page.is-leaving  { animation: pageOut .18s var(--ease) forwards; }

@media (prefers-reduced-motion: reduce) {
  .page.is-entering, .page.is-leaving { animation: none; }
}

/* =========================================================================
   ТИПОГРАФИКА КОНТЕНТА
   ========================================================================= */
.page h1, .page h2, .page h3 { font-family: var(--font-title); color: var(--accent); line-height: 1.1; }
.page h1 { font-size: clamp(2rem, 7vw, 3rem); margin: 0 0 .4rem; }
.page h2 { font-size: clamp(1.5rem, 5vw, 2rem); margin: 1.6rem 0 .6rem; }
.page h3 { font-size: 1.3rem; margin: 1.2rem 0 .4rem; color: var(--ink); }
.lead { font-size: 1.15rem; color: var(--ink-soft); font-style: italic; }
.muted { color: var(--ink-soft); }
.divider { border: 0; border-top: 1px solid var(--ink-faint); margin: 1.6rem 0; }

.crumbs { font-size: .9rem; color: var(--ink-soft); margin-bottom: .8rem; }
.crumbs a { color: var(--ink-soft); }

.placeholder-note {
  display: inline-block;
  font-size: .8rem;
  font-style: italic;
  color: var(--ink-soft);
  background: #00000008;
  border: 1px dashed var(--paper-edge);
  border-radius: 4px;
  padding: .15rem .5rem;
  margin: .3rem 0;
}

/* Бейджи служебных слов */
.badge {
  display: inline-block;
  font-family: var(--font-body);
  font-size: .72rem;
  text-transform: uppercase;
  letter-spacing: .08em;
  padding: .12rem .5rem;
  border-radius: 999px;
  vertical-align: middle;
}
.badge--wip   { background: #5b4a3214; color: var(--ink-soft); border: 1px solid var(--paper-edge); }
.badge--staff { background: var(--accent); color: #f6ead0; }

/* =========================================================================
   ГЛАВНАЯ
   ========================================================================= */
.home-hero { text-align: center; margin-bottom: 1.4rem; }
.home-hero h1 { font-family: var(--font-title); }

.section-top {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1rem;
  margin-bottom: 2rem;
}
.tile {
  display: block;
  text-align: center;
  padding: 1.2rem;
  border: 1px solid var(--paper-edge);
  border-radius: var(--radius);
  background: linear-gradient(#f6efda, #ece0c0);
  color: var(--ink);
  transition: transform .14s var(--ease), box-shadow .2s var(--ease);
}
.tile:hover { transform: translateY(-2px); box-shadow: 0 8px 20px -10px rgba(40,28,12,.5); text-decoration: none; }
.tile h3 { margin: 0 0 .2rem; color: var(--accent); }
.tile p { margin: 0; font-size: .92rem; color: var(--ink-soft); }

/* Две большие кнопки поэтов */
.poets {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.2rem;
}
.poet-card {
  position: relative;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  min-height: 220px;
  padding: 1.4rem;
  border-radius: 10px;
  border: 1px solid var(--paper-edge);
  background: linear-gradient(180deg, #e9dcbf 0%, #d8c49a 100%);
  box-shadow: var(--shadow-page);
  color: var(--ink);
  overflow: hidden;
  transition: transform .16s var(--ease), box-shadow .2s var(--ease);
}
.poet-card:hover { transform: translateY(-3px); text-decoration: none; box-shadow: 0 22px 50px -22px rgba(40,28,12,.7); }
.poet-card__name { font-family: var(--font-title); font-size: 2.2rem; color: var(--accent); line-height: 1; }
.poet-card__years { font-family: var(--font-hand); font-size: 1.2rem; color: var(--ink-soft); }
.poet-card--wip { filter: grayscale(.5); opacity: .85; }
.poet-card--wip .poet-card__name { color: var(--ink-soft); }
.poet-card__portrait {
  position: absolute; inset: 0;
  background-size: cover; background-position: center top;
  opacity: .18;
}

/* =========================================================================
   О ПРОЕКТЕ / БЛАГОДАРНОСТИ
   ========================================================================= */
.heart {
  display: inline-block;
  color: var(--accent);
  font-size: 1.3em;
  /* 60 ударов в минуту = 1 секунда на цикл */
  animation: heartbeat 1s var(--ease) infinite;
  transform-origin: center;
}
@keyframes heartbeat {
  0%, 100% { transform: scale(1); }
  14%      { transform: scale(1.28); }
  28%      { transform: scale(1); }
  42%      { transform: scale(1.18); }
  60%      { transform: scale(1); }
}
@media (prefers-reduced-motion: reduce) { .heart { animation: none; } }

blockquote.poem {
  font-family: var(--font-body);
  font-style: italic;
  font-size: 1.1rem;
  white-space: pre-line;
  border-left: 3px solid var(--accent);
  padding: .4rem 0 .4rem 1.2rem;
  margin: 1.2rem 0;
  color: var(--ink);
}

.bilingual {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1rem;
  margin: 1rem 0;
}
.bilingual .col { white-space: pre-line; }
.bilingual .col h4 { font-family: var(--font-hand); font-size: 1.3rem; margin: 0 0 .4rem; color: var(--accent); }

.copyright-warn {
  border: 1px solid var(--accent-soft);
  background: #7a1f1f0d;
  border-radius: var(--radius);
  padding: .8rem 1rem;
  font-size: .9rem;
  color: var(--ink-soft);
  margin: 1rem 0;
}

/* Кнопка «Слушать на YouTube» (карточка песни в «О проекте») */
.listen-cta { margin: 1rem 0 .4rem; }
.listen-cta .btn { text-decoration: none; display: inline-block; }
.listen-note { font-size: .82rem; opacity: .85; margin: 0 0 .6rem; }

/* =========================================================================
   СТИХИ
   ========================================================================= */
.search-bar { display: flex; gap: .6rem; margin: 1rem 0; flex-wrap: wrap; }
.search-bar input {
  flex: 1; min-width: 180px;
  font-family: var(--font-body); font-size: 1.05rem;
  padding: .6rem .8rem;
  border: 1px solid var(--paper-edge); border-radius: var(--radius);
  background: #fbf6e8;
}
.tabs { display: flex; flex-wrap: wrap; gap: .4rem; margin: .8rem 0; }
.tab {
  font-family: var(--font-body); font-size: .9rem;
  padding: .35rem .8rem; border-radius: 999px;
  border: 1px solid var(--paper-edge); background: #f4ecd6; cursor: pointer; color: var(--ink-soft);
}
.tab.is-active { background: var(--accent); color: #f6ead0; border-color: #5e1717; }

.poem-list { list-style: none; padding: 0; margin: 1rem 0; }
.poem-list li {
  padding: .7rem .2rem;
  border-bottom: 1px solid var(--ink-faint);
  display: flex; justify-content: space-between; align-items: baseline; gap: 1rem;
}
.poem-list .pl-title { font-size: 1.1rem; }
.poem-list .pl-meta { font-size: .82rem; color: var(--ink-soft); white-space: nowrap; }

/* =========================================================================
   КОМПОЗИЦИИ
   ========================================================================= */
.comp-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1rem;
  margin: 1.2rem 0;
}
.comp-card {
  display: flex; flex-direction: column; gap: .5rem;
  padding: 1rem;
  border: 1px solid var(--paper-edge);
  border-radius: var(--radius);
  background: linear-gradient(#f6efda, #ece0c0);
  transition: transform .14s var(--ease), box-shadow .2s var(--ease);
}
.comp-card:hover { transform: translateY(-2px); box-shadow: 0 10px 24px -12px rgba(40,28,12,.5); }
.comp-card__title { font-family: var(--font-title); font-size: 1.6rem; color: var(--accent); }
.comp-card__title a { color: inherit; }
.comp-card__style { font-size: .85rem; color: var(--ink-soft); font-style: italic; line-height: 1.4; }
.comp-card__row { display: flex; align-items: center; gap: .8rem; margin-top: .3rem; }

.play-chip {
  display: inline-flex; align-items: center; gap: .45rem;
  font-family: var(--font-body); font-size: .95rem;
  padding: .4rem .9rem; border-radius: 999px;
  border: 1px solid #5e1717;
  background: linear-gradient(var(--accent-soft), var(--accent));
  color: #f6ead0; cursor: pointer;
}
.play-chip:hover { filter: brightness(1.08); }

.staff-toggle { margin: 1.6rem 0 .6rem; }
.staff-region { display: none; }
.staff-region.is-open { display: block; }
.staff-region .placeholder-note { display: block; margin-bottom: .6rem; }

/* Деталь композиции */
.variant {
  padding: .8rem 1rem;
  border: 1px solid var(--paper-edge);
  border-radius: var(--radius);
  margin: .7rem 0;
  background: #00000005;
}
.variant--main {
  border: 2px solid var(--accent);
  background: #7a1f1f08;
}
.variant--main .variant__name { font-family: var(--font-title); font-size: 1.4rem; color: var(--accent); }
.variant__name { font-weight: 600; }
.variant__meta { font-size: .82rem; color: var(--ink-soft); }
.lyrics { white-space: pre-line; font-size: 1.08rem; line-height: 1.7; }

/* =========================================================================
   ЗАГЛУШКА «В РАЗРАБОТКЕ»
   ========================================================================= */
.wip-screen { text-align: center; padding: 3rem 1rem; filter: grayscale(.35); }
.wip-screen .big { font-size: 3.4rem; }
.wip-screen h1 { color: var(--ink-soft); }

/* =========================================================================
   ПЛЕЕР
   ========================================================================= */
.player {
  position: fixed;
  left: 0; right: 0; bottom: 0;
  z-index: 60;
  display: flex; align-items: center; gap: .8rem;
  padding: .6rem clamp(.8rem, 4vw, 2rem);
  padding-bottom: calc(.6rem + env(safe-area-inset-bottom));
  background: linear-gradient(#efe4ca, #ddcca6);
  border-top: 1px solid var(--paper-edge);
  box-shadow: 0 -4px 16px rgba(40,28,12,.18);
}
.player__btn {
  font-size: 1.1rem;
  width: 42px; height: 42px;
  flex: 0 0 auto;
  border-radius: 50%;
  border: 1px solid #5e1717;
  background: linear-gradient(var(--accent-soft), var(--accent));
  color: #f6ead0; cursor: pointer;
}
.player__btn--close {
  background: none; color: var(--ink-soft); border-color: var(--paper-edge);
  width: 34px; height: 34px; font-size: .9rem;
}
.player__meta { flex: 1; min-width: 0; display: grid; gap: .25rem; }
.player__title {
  font-family: var(--font-title); font-size: 1.2rem; color: var(--accent);
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}
.player__seek { width: 100%; accent-color: var(--accent); }
.player__time { font-variant-numeric: tabular-nums; font-size: .85rem; color: var(--ink-soft); flex: 0 0 auto; }

/* =========================================================================
   ПЛАНШЕТ / ДЕСКТОП
   ========================================================================= */
@media (max-width: 520px) {
  .ribbon { flex-wrap: wrap; gap: .3rem .8rem; padding: .5rem .8rem; }
  .ribbon__brand { font-size: 1.3rem; flex: 1 1 100%; }
  .ribbon__links { width: 100%; justify-content: flex-start; }
}

@media (min-width: 720px) {
  .section-top { grid-template-columns: 1fr 1fr; }
  .poets { grid-template-columns: 1fr 1fr; }
  .comp-grid { grid-template-columns: 1fr 1fr; }
  .bilingual { grid-template-columns: 1fr 1fr; }
  .poet-card { min-height: 280px; }
}

/* =========================================================================
   ДИСТРИБУЦИЯ, ВИДЕО, БЕЙДЖИ (Есенин + Цветаева)
   ========================================================================= */
/* Кнопка-«пилюля» «Слушать на YouTube» */
.yt-chip {
  display: inline-flex; align-items: center; gap: .45rem;
  margin-top: .9rem;
  font-family: var(--font-body); font-size: .95rem;
  padding: .4rem 1rem; border-radius: 999px;
  border: 1px solid #5e1717;
  background: linear-gradient(var(--accent-soft), var(--accent));
  color: #f6ead0;
}
.yt-chip:hover { filter: brightness(1.08); color: #f6ead0; text-decoration: none; }

.links-row { display: flex; flex-wrap: wrap; gap: .8rem; align-items: center; margin: 1rem 0; }

/* Маленький бейдж «🎬 видео» рядом с названием композиции */
.comp-card__badge {
  display: inline-block; margin-left: .5rem;
  font-family: var(--font-body); font-size: .72rem; vertical-align: middle;
  padding: .08rem .5rem; border-radius: 999px;
  background: #5b4a3214; color: var(--ink-soft); border: 1px solid var(--paper-edge);
}

/* Адаптивный контейнер YouTube 16:9 */
.video-embed {
  position: relative; width: 100%; aspect-ratio: 16 / 9;
  margin: .6rem 0 .2rem;
  border: 1px solid var(--paper-edge); border-radius: var(--radius);
  overflow: hidden; background: #000;
  box-shadow: 0 10px 24px -14px rgba(40,28,12,.6);
}
.video-embed iframe { position: absolute; inset: 0; width: 100%; height: 100%; border: 0; }
@supports not (aspect-ratio: 16 / 9) {
  .video-embed { height: 0; padding-bottom: 56.25%; aspect-ratio: auto; }
}