/* ============================================================
   КНИГИ 2.0 — ДИЗАЙН-СИСТЕМА
   Netflix-глянец × палитра Claude × тренды-2026
   ============================================================ */

:root {
  --bk-bg: var(--yz-bg, #0F0E0D);
  --bk-bg-deep: var(--yz-bg-deep, #0A0908);
  --bk-bg-raise: #1A1917;
  --bk-surface: var(--yz-surface, #22211F);
  --bk-surface2: var(--yz-surface-2, #2E2C29);
  --bk-border: rgba(250, 249, 245, 0.08);
  --bk-border-strong: rgba(250, 249, 245, 0.16);
  --bk-text: #faf9f5;
  --bk-dim: #b9b4a7;
  --bk-muted: #8d8878;
  --bk-accent: #d97757;
  --bk-accent-hi: #e88a68;
  --bk-accent-deep: #b05730;
  --bk-gold: #e2b13c;
  --bk-danger: #e5484d;
  --bk-success: #58a76b;
  --bk-grad: linear-gradient(135deg, #e2885f 0%, #d97757 45%, #b3552e 100%);
  --bk-hero-gradient: radial-gradient(90% 80% at 75% 10%, rgba(217,119,87,.3), transparent 60%), linear-gradient(160deg, #2E2826, #0A0908);
  --bk-r-lg: 24px;
  --bk-r-md: 16px;
  --bk-r-sm: 10px;
  --bk-shadow: 0 24px 60px -18px rgba(0, 0, 0, 0.65);
  --bk-shadow-soft: 0 10px 30px -12px rgba(0, 0, 0, 0.5);
  --bk-font-ui: 'Inter', -apple-system, sans-serif;
  --bk-font-serif: 'Literata', 'Georgia', serif;
  --safe-top: env(safe-area-inset-top, 0px);
  --safe-bottom: env(safe-area-inset-bottom, 0px);
}

/* ============ СВЕТЛАЯ ТЕМА (Cloud Dancer) ============ */
html[data-yz-theme="cloud"] {
  --bk-bg: #f4f2ec; --bk-bg-deep: #ebe8e0; --bk-bg-raise: #ffffff;
  --bk-surface: #ffffff; --bk-surface2: #faf9f4;
  --bk-border: rgba(35,32,25,0.09); --bk-border-strong: rgba(35,32,25,0.18);
  --bk-text: #232019; --bk-dim: #6e695d; --bk-muted: #9a9384;
  --bk-accent: #c96543; --bk-accent-hi: #dd7a56; --bk-accent-deep: #a54c2b;
  --bk-gold: #c2922a; --bk-danger: #d9363e; --bk-success: #3f8d54;
  --bk-hero-gradient: radial-gradient(90% 80% at 75% 10%, rgba(201,101,67,.18), transparent 60%), linear-gradient(160deg, #e8e2d6, #f4f2ec);
  --bk-shadow: 0 24px 60px -18px rgba(60,50,35,0.22);
  --bk-shadow-soft: 0 10px 30px -12px rgba(60,50,35,0.16);
}

* { box-sizing: border-box; -webkit-tap-highlight-color: transparent; }
html, body { margin: 0; padding: 0; }
body.bk-body {
  background: var(--bk-bg);
  color: var(--bk-text);
  font-family: var(--bk-font-ui);
  min-height: 100dvh;
  overscroll-behavior-y: none;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
body.bk-body::selection { background: rgba(217, 119, 87, 0.35); }
a { color: inherit; text-decoration: none; }
button { font-family: inherit; }
img { -webkit-user-drag: none; }

/* фоновое «дыхание» витрины */
.bk-aurora {
  position: fixed; inset: 0; z-index: 0; pointer-events: none;
  background:
    radial-gradient(60% 44% at 82% -8%, rgba(217, 119, 87, 0.14), transparent 60%),
    radial-gradient(50% 40% at 8% 108%, rgba(226, 177, 60, 0.07), transparent 60%);
}

::-webkit-scrollbar { width: 10px; height: 8px; }
::-webkit-scrollbar-thumb { background: color-mix(in srgb, var(--bk-text) 14%, transparent); border-radius: 10px; border: 3px solid var(--bk-bg); }
::-webkit-scrollbar-track { background: transparent; }

.bk-hidden { display: none !important; }
.bk-noscroll { overflow: hidden !important; }

/* ============ ВЕРХНЯЯ ПАНЕЛЬ (стекло) ============ */
.bk-topbar {
  position: fixed; top: 0; left: 0; right: 0; z-index: 900;
  display: flex; align-items: center; gap: 14px;
  padding: calc(10px + var(--safe-top)) clamp(16px, 4vw, 48px) 10px;
  transition: background .4s, backdrop-filter .4s, box-shadow .4s;
}
.bk-topbar.scrolled {
  background: color-mix(in srgb, var(--bk-bg-deep) 72%, transparent);
  backdrop-filter: blur(22px) saturate(160%);
  -webkit-backdrop-filter: blur(22px) saturate(160%);
  box-shadow: 0 1px 0 var(--bk-border);
}
.bk-logo {
  display: flex; align-items: center; gap: 10px;
  font-family: var(--bk-font-serif); font-weight: 800; font-size: 21px; letter-spacing: .2px;
  cursor: pointer; user-select: none;
}
.bk-logo .bk-logo-mark {
  width: 34px; height: 34px; border-radius: 10px; background: var(--bk-grad);
  display: grid; place-items: center; font-size: 16px; color: #fff;
  box-shadow: 0 6px 18px -6px rgba(217, 119, 87, 0.7);
}
.bk-logo sup { font: 700 10px var(--bk-font-ui); color: var(--bk-accent-hi); margin-left: 2px; }
.bk-top-actions { margin-left: auto; display: flex; align-items: center; gap: 10px; }

.bk-iconbtn {
  width: 40px; height: 40px; border-radius: 13px; border: 1px solid var(--bk-border);
  background: color-mix(in srgb, var(--bk-surface) 60%, transparent); color: var(--bk-text); font-size: 15px;
  display: grid; place-items: center; cursor: pointer;
  transition: transform .18s, background .18s, border-color .18s;
  backdrop-filter: blur(10px);
}
.bk-iconbtn:hover { background: var(--bk-surface2); transform: translateY(-1px); border-color: var(--bk-border-strong); }
.bk-iconbtn:active { transform: scale(.94); }
.bk-avatar-mini { width: 38px; height: 38px; border-radius: 12px; object-fit: cover; cursor: pointer; border: 1.5px solid var(--bk-border-strong); transition: transform .18s; }
.bk-avatar-mini:hover { transform: scale(1.06); }

/* поиск */
.bk-search-wrap { position: relative; }
.bk-search {
  width: 0; opacity: 0; pointer-events: none;
  transition: width .35s cubic-bezier(.22,1,.36,1), opacity .25s;
  height: 40px; border-radius: 13px; border: 1px solid var(--bk-border);
  background: color-mix(in srgb, var(--bk-bg-deep) 80%, transparent); color: var(--bk-text);
  padding: 0 14px; font-size: 14px; outline: none;
}
.bk-search-wrap.open .bk-search { width: min(300px, 52vw); opacity: 1; pointer-events: auto; }
.bk-search:focus { border-color: rgba(217,119,87,.55); }

/* ============ КНОПКИ ============
   Часть «кнопок» — на самом деле ссылки (<a class="bk-btn">). Так сделана
   главная кнопка «Читать»: у ссылки есть адрес, поэтому она сработает даже
   если JS на странице не завёлся, — а гостя по этому адресу встретит серверная
   проверка и экран входа. Отсюда text-decoration и color !important: браузер
   иначе подчеркнёт ссылку и перекрасит её в цвет посещённой. */
.bk-btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 9px;
  border: none; cursor: pointer; font-weight: 700; font-size: 15px;
  text-decoration: none;
  border-radius: 14px; padding: 14px 22px; color: #fff !important;
  background: var(--bk-grad);
  box-shadow: 0 10px 26px -10px rgba(217, 119, 87, 0.65), inset 0 1px 0 rgba(255,255,255,.22);
  transition: transform .18s, box-shadow .18s, filter .18s;
  position: relative; overflow: hidden;
}
.bk-btn::after { content: ''; position: absolute; inset: 0; background: linear-gradient(100deg, transparent 30%, rgba(255,255,255,.25) 50%, transparent 70%); transform: translateX(-120%); transition: transform .6s; }
.bk-btn:hover { transform: translateY(-2px); box-shadow: 0 16px 34px -10px rgba(217,119,87,.75), inset 0 1px 0 rgba(255,255,255,.22); }
.bk-btn:hover::after { transform: translateX(120%); }
.bk-btn:active { transform: scale(.97); }
.bk-btn:disabled { filter: grayscale(.6) brightness(.7); pointer-events: none; }
.bk-btn.lg { padding: 17px 30px; font-size: 16px; border-radius: 16px; }
.bk-btn.sm { padding: 9px 15px; font-size: 13px; border-radius: 11px; }

.bk-btn-ghost {
  display: inline-flex; align-items: center; justify-content: center; gap: 9px;
  cursor: pointer; font-weight: 600; font-size: 15px;
  border-radius: 14px; padding: 13px 20px; color: var(--bk-text);
  background: color-mix(in srgb, var(--bk-text) 7%, transparent); border: 1px solid var(--bk-border);
  backdrop-filter: blur(8px);
  transition: transform .18s, background .18s, border-color .18s;
}
.bk-btn-ghost:hover { background: color-mix(in srgb, var(--bk-text) 13%, transparent); transform: translateY(-2px); border-color: var(--bk-border-strong); }
.bk-btn-ghost:active { transform: scale(.97); }
.bk-btn-ghost.sm { padding: 9px 14px; font-size: 13px; border-radius: 11px; }
.bk-btn-ghost.active { background: rgba(217,119,87,.16); border-color: rgba(217,119,87,.5); color: var(--bk-accent-hi); }

.bk-chip {
  display: inline-flex; align-items: center; gap: 7px; white-space: nowrap;
  padding: 9px 16px; border-radius: 100px; font-size: 13.5px; font-weight: 600;
  color: var(--bk-dim); background: color-mix(in srgb, var(--bk-text) 6%, transparent); border: 1px solid var(--bk-border);
  cursor: pointer; transition: all .2s;
}
.bk-chip:hover { color: var(--bk-text); background: color-mix(in srgb, var(--bk-text) 10%, transparent); }
.bk-chip.active { color: #fff; background: var(--bk-grad); border-color: transparent; box-shadow: 0 6px 16px -6px rgba(217,119,87,.6); }

/* лента категорий: ВСЕГДА одна строка, горизонтальный скролл без скроллбара */
.bk-chip-row {
  display: flex; gap: 8px; flex-wrap: nowrap;
  overflow-x: auto; overscroll-behavior-x: contain; -webkit-overflow-scrolling: touch;
  scrollbar-width: none; -ms-overflow-style: none;
  scroll-padding-left: 16px;
}
.bk-chip-row::-webkit-scrollbar { display: none; }
.bk-chip-row .bk-chip { flex: 0 0 auto; }

/* ============ HERO ============ */
.bk-hero {
  position: relative; z-index: 1;
  height: clamp(480px, 78vh, 820px);
  display: flex; align-items: flex-end;
  overflow: hidden;
}
.bk-hero-bg { position: absolute; inset: 0; }
.bk-hero-bg .slide {
  position: absolute; inset: 0; background-size: cover; background-position: center 20%;
  opacity: 0; transform: scale(1.06); transition: opacity 1.1s ease, transform 7s linear;
  will-change: opacity, transform;
}
.bk-hero-bg .slide.on { opacity: 1; transform: scale(1); }
.bk-hero-bg::before {
  content: ''; position: absolute; inset: 0; z-index: 2;
  background: linear-gradient(to top, var(--bk-bg) 2%, color-mix(in srgb, var(--bk-bg) 82%, transparent) 22%, color-mix(in srgb, var(--bk-bg) 25%, transparent) 55%, color-mix(in srgb, var(--bk-bg) 45%, transparent) 100%);
}
.bk-hero-bg::after {
  content: ''; position: absolute; inset: 0; z-index: 2;
  background: linear-gradient(100deg, color-mix(in srgb, var(--bk-bg-deep) 85%, transparent) 0%, transparent 55%);
}

/* Светлая тема: оверлеи темнее, чтобы обложка не тонула в «тумане» */
html[data-yz-theme="cloud"] .bk-hero-bg::before {
  background: linear-gradient(to top, var(--bk-bg) 2%, color-mix(in srgb, #3d3830 72%, transparent) 18%, color-mix(in srgb, #3d3830 18%, transparent) 50%, color-mix(in srgb, #3d3830 32%, transparent) 100%);
}
html[data-yz-theme="cloud"] .bk-hero-bg::after {
  background: linear-gradient(100deg, color-mix(in srgb, #2a2520 78%, transparent) 0%, transparent 55%);
}

/* Светлая тема: hero-текст — светлый (hero всегда тёмный, как на стримингах) */
html[data-yz-theme="cloud"] .bk-hero-title {
  color: #faf9f5;
  text-shadow: 0 8px 40px rgba(0,0,0,.55);
}
html[data-yz-theme="cloud"] .bk-hero-tagline {
  color: rgba(250,249,245,0.88);
  text-shadow: 0 2px 18px rgba(0,0,0,.5);
}
html[data-yz-theme="cloud"] .bk-hero-meta {
  color: #b9b4a7;
}
html[data-yz-theme="cloud"] .bk-hero-eyebrow {
  color: #e88a68;
}
/* кнопка-ghost в hero: светлый текст + светлая рамка */
html[data-yz-theme="cloud"] .bk-hero-content .bk-btn-ghost {
  color: #faf9f5;
  background: rgba(250,249,245,0.08);
  border-color: rgba(250,249,245,0.22);
}
html[data-yz-theme="cloud"] .bk-hero-content .bk-btn-ghost:hover {
  background: rgba(250,249,245,0.16);
  border-color: rgba(250,249,245,0.4);
}
/* точки-индикаторы: светлые */
html[data-yz-theme="cloud"] .bk-hero-dots i {
  background: rgba(250,249,245,0.22);
}
html[data-yz-theme="cloud"] .bk-hero-dots i.on {
  background: var(--bk-accent);
}
/* age-pill: светлый текст + светлая рамка */
html[data-yz-theme="cloud"] .bk-age-pill {
  color: #b9b4a7;
  border-color: rgba(250,249,245,0.22);
}
.bk-hero-content {
  position: relative; z-index: 3; width: 100%;
  padding: 0 clamp(16px, 4vw, 48px) clamp(28px, 5vh, 56px);
  max-width: 820px;
}
.bk-hero-eyebrow {
  display: inline-flex; align-items: center; gap: 8px;
  font-size: 12.5px; font-weight: 800; letter-spacing: 2.5px; text-transform: uppercase;
  color: var(--bk-accent-hi); margin-bottom: 14px;
}
.bk-hero-eyebrow::before { content: ''; width: 26px; height: 2px; background: var(--bk-grad); border-radius: 2px; }
.bk-hero-title {
  font-family: var(--bk-font-serif); font-weight: 800;
  font-size: clamp(34px, 6vw, 72px); line-height: 1.02; margin: 0 0 14px;
  text-shadow: 0 8px 40px rgba(0,0,0,.55);
  animation: bkRise .8s cubic-bezier(.22,1,.36,1) both;
}
.bk-hero-meta { display: flex; align-items: center; flex-wrap: wrap; gap: 10px 16px; margin-bottom: 14px; color: var(--bk-dim); font-size: 14px; font-weight: 600; }
.bk-hero-meta .dot::before { content: '·'; margin-right: 16px; color: var(--bk-muted); }
.bk-hero-tagline { font-size: clamp(15px, 1.6vw, 18px); line-height: 1.55; color: color-mix(in srgb, var(--bk-text) 88%, transparent); max-width: 620px; margin: 0 0 24px; text-shadow: 0 2px 18px rgba(0,0,0,.5); }
.bk-hero-actions { display: flex; gap: 12px; flex-wrap: wrap; animation: bkRise 1s .15s cubic-bezier(.22,1,.36,1) both; }
.bk-hero-dots { position: absolute; right: clamp(16px,4vw,48px); bottom: clamp(28px,5vh,56px); z-index: 4; display: flex; gap: 8px; }
.bk-hero-dots i { width: 26px; height: 4px; border-radius: 4px; background: color-mix(in srgb, var(--bk-text) 22%, transparent); cursor: pointer; transition: all .3s; }
.bk-hero-dots i.on { background: var(--bk-accent); width: 40px; }

.bk-age-pill { padding: 3px 8px; border: 1px solid var(--bk-border-strong); border-radius: 7px; font-size: 11.5px; font-weight: 800; color: var(--bk-dim); }

@keyframes bkRise { from { opacity: 0; transform: translateY(26px); } to { opacity: 1; transform: none; } }

/* ============ ПОЛКИ ============ */
.bk-main { position: relative; z-index: 2; padding-bottom: 90px; }
.bk-shelf { margin-top: clamp(26px, 4vh, 44px); }
.bk-shelf-head {
  display: flex; align-items: baseline; gap: 14px;
  padding: 0 clamp(16px, 4vw, 48px); margin-bottom: 14px;
}
.bk-shelf-title { font-family: var(--bk-font-serif); font-size: clamp(19px, 2.2vw, 26px); font-weight: 800; margin: 0; }
.bk-shelf-more { font-size: 13px; font-weight: 700; color: var(--bk-muted); cursor: pointer; transition: color .2s; }
.bk-shelf-more:hover { color: var(--bk-accent-hi); }
.bk-row {
  display: flex; gap: 14px; overflow-x: auto; overscroll-behavior-x: contain;
  padding: 10px clamp(16px, 4vw, 48px) 22px;
  scroll-snap-type: x proximity; scrollbar-width: none;
}
.bk-row::-webkit-scrollbar { display: none; }

/* Горизонтальная полка «Сейчас читают» — скроллится свайпом,
   как .bk-row, но с крупными номерами-рангами */
.bk-row-static {
  display: flex; flex-wrap: nowrap; gap: 14px 18px;
  overflow-x: auto; overscroll-behavior-x: contain;
  padding: 10px clamp(16px, 4vw, 48px) 22px;
  justify-content: flex-start;
  scrollbar-width: none;
}
.bk-row-static::-webkit-scrollbar { display: none; }
.bk-row-static .bk-card { scroll-snap-align: none; }
@media (max-width: 640px) {
  .bk-row-static { gap: 10px 12px; }
  .bk-row-static .bk-rank-num { font-size: clamp(64px, 16vw, 96px); -webkit-text-stroke-width: 2px; }
}

/* Значок ИИ-персоны (книжный раздел) */
.bk-ai-badge {
  display: inline-flex; align-items: center; gap: 4px;
  padding: 3px 8px; border-radius: 999px;
  font-size: 11px; font-weight: 800; letter-spacing: .4px;
  color: #fff; background: linear-gradient(120deg, #7c5cff, #d97757 80%);
  box-shadow: 0 2px 10px -3px rgba(124, 92, 255, .7);
  white-space: nowrap;
}
.bk-ai-badge.sm { padding: 2px 6px; font-size: 9.5px; }
.bk-ai-badge i { font-size: 9px; }

/* ============ КАРТОЧКА-ПОСТЕР ============ */
.bk-card { flex: 0 0 auto; width: clamp(138px, 15vw, 196px); scroll-snap-align: start; cursor: pointer; position: relative; }
.bk-cover {
  position: relative; aspect-ratio: 2 / 3; border-radius: 14px; overflow: hidden;
  background: linear-gradient(160deg, var(--bk-surface2), var(--bk-bg-deep));
  box-shadow: 0 14px 34px -14px rgba(0, 0, 0, .7);
  transition: transform .35s cubic-bezier(.22,1,.36,1), box-shadow .35s;
  transform: translateZ(0);
}
.bk-card:hover .bk-cover { transform: translateY(-8px) scale(1.035); box-shadow: 0 26px 50px -16px rgba(0,0,0,.8), 0 0 0 1px rgba(217,119,87,.35); }
.bk-cover img { width: 100%; height: 100%; object-fit: cover; display: block; }
.bk-cover .sheen {
  position: absolute; inset: 0; pointer-events: none;
  background: linear-gradient(115deg, transparent 38%, rgba(255,255,255,.14) 48%, transparent 60%);
  transform: translateX(-130%); transition: transform .7s ease;
}
.bk-card:hover .sheen { transform: translateX(130%); }
.bk-cover .fallback {
  position: absolute; inset: 0; display: flex; flex-direction: column; justify-content: flex-end;
  padding: 14px; font-family: var(--bk-font-serif); font-weight: 800; font-size: 16px; line-height: 1.2;
  color: #faf9f5; /* [cloud-fix 2026-08-19] заглушка обложки тёмная в любой теме — наследуемый цвет в cloud был тёмным */
  background:
    radial-gradient(120% 90% at 80% 0%, rgba(217,119,87,.4), transparent 55%),
    linear-gradient(160deg, #3d3c39, #22211f);
  text-shadow: 0 2px 12px rgba(0,0,0,.6);
}
.bk-cover .fallback::before { content: '❝'; font-size: 34px; color: rgba(217,119,87,.8); line-height: 1; margin-bottom: auto; }
.bk-card-title { margin: 10px 2px 2px; font-size: 14px; font-weight: 700; line-height: 1.3; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.bk-card-sub { margin: 0 2px; font-size: 12px; color: var(--bk-muted); font-weight: 600; display: flex; align-items: center; gap: 6px; }
.bk-cover .badge {
  position: absolute; top: 10px; left: 10px; z-index: 3;
  padding: 5px 10px; border-radius: 9px; font-size: 11px; font-weight: 800;
  background: color-mix(in srgb, var(--bk-bg-deep) 78%, transparent); backdrop-filter: blur(8px); border: 1px solid var(--bk-border);
}
.bk-cover .badge.hotb { background: var(--bk-grad); border: none; box-shadow: 0 4px 14px -4px rgba(217,119,87,.8); }
.bk-cover .progressbar { position: absolute; left: 0; right: 0; bottom: 0; height: 4px; background: rgba(0,0,0,.45); z-index: 3; }
.bk-cover .progressbar i { display: block; height: 100%; background: var(--bk-grad); border-radius: 0 4px 4px 0; }

/* Netflix «топ-цифры» */
.bk-card.ranked { display: flex; align-items: flex-end; width: auto; }
.bk-rank-num {
  font-family: var(--bk-font-serif); font-weight: 900; line-height: .78;
  font-size: clamp(96px, 12vw, 168px);
  color: transparent; -webkit-text-stroke: 3px color-mix(in srgb, var(--bk-text) 28%, transparent);
  margin-right: -0.18em; user-select: none; transition: -webkit-text-stroke-color .3s, color .3s;
}
.bk-card.ranked:hover .bk-rank-num { -webkit-text-stroke-color: var(--bk-accent); }
.bk-card.ranked .bk-cover { width: clamp(120px, 12vw, 168px); }

/* ============ СКЕЛЕТОНЫ ============ */
.bk-skel { position: relative; overflow: hidden; background: color-mix(in srgb, var(--bk-text) 5%, transparent); border-radius: 14px; }
.bk-skel::after { content: ''; position: absolute; inset: 0; background: linear-gradient(100deg, transparent 30%, color-mix(in srgb, var(--bk-text) 7%, transparent) 50%, transparent 70%); animation: bkShimmer 1.4s infinite; }
@keyframes bkShimmer { from { transform: translateX(-100%); } to { transform: translateX(100%); } }

/* ============ ПОЛНОЭКРАННАЯ КАРТОЧКА КНИГИ ============ */
.bk-sheet-backdrop {
  position: fixed; inset: 0; z-index: 1000;
  background: color-mix(in srgb, var(--bk-bg-deep) 70%, transparent); backdrop-filter: blur(14px);
  opacity: 0; transition: opacity .3s;
}
.bk-sheet-backdrop.on { opacity: 1; }
.bk-sheet {
  position: fixed; z-index: 1001; inset: 0; overflow-y: auto; overscroll-behavior: contain;
  opacity: 0; transform: translateY(40px) scale(.98);
  transition: opacity .35s, transform .45s cubic-bezier(.22,1,.36,1);
}
.bk-sheet.on { opacity: 1; transform: none; }
.bk-sheet-inner {
  position: relative; max-width: 1060px; margin: clamp(0px, 5vh, 60px) auto; min-height: 60vh;
  background: var(--bk-bg-raise); border-radius: var(--bk-r-lg); overflow: hidden;
  border: 1px solid var(--bk-border); box-shadow: var(--bk-shadow);
}
.bk-sheet-hero { position: relative; height: clamp(300px, 44vh, 460px); }
.bk-sheet-hero .bg { position: absolute; inset: 0; background-size: cover; background-position: center 25%; filter: saturate(1.05); }
.bk-sheet-hero::after { content: ''; position: absolute; inset: 0; background: linear-gradient(to top, var(--bk-bg-raise) 4%, color-mix(in srgb, var(--bk-bg-raise) 45%, transparent) 55%, color-mix(in srgb, var(--bk-bg-raise) 25%, transparent)); }
.bk-sheet-close {
  position: absolute; top: 16px; right: 16px; z-index: 5;
  width: 42px; height: 42px; border-radius: 50%; border: 1px solid var(--bk-border);
  background: color-mix(in srgb, var(--bk-bg-deep) 70%, transparent); backdrop-filter: blur(10px); color: #fff; font-size: 16px;
  display: grid; place-items: center; cursor: pointer; transition: transform .2s, background .2s;
}
.bk-sheet-close:hover { transform: rotate(90deg); background: rgba(217,119,87,.8); }
.bk-sheet-body { position: relative; margin-top: -120px; z-index: 3; padding: 0 clamp(18px, 4vw, 44px) 40px; display: flex; gap: clamp(18px, 3vw, 36px); }
.bk-sheet-cover { flex: 0 0 clamp(150px, 18vw, 220px); }
.bk-sheet-cover .bk-cover { box-shadow: 0 30px 60px -18px rgba(0,0,0,.85); }
.bk-sheet-info { flex: 1; min-width: 0; padding-top: clamp(30px, 8vh, 90px); }
.bk-sheet-title { font-family: var(--bk-font-serif); font-size: clamp(26px, 3.6vw, 44px); font-weight: 800; margin: 0 0 10px; line-height: 1.06; }
.bk-sheet-meta { display: flex; flex-wrap: wrap; gap: 8px 14px; align-items: center; color: var(--bk-dim); font-size: 13.5px; font-weight: 600; margin-bottom: 16px; }
.bk-sheet-desc { color: color-mix(in srgb, var(--bk-text) 85%, transparent); font-size: 15px; line-height: 1.65; max-width: 640px; }
.bk-sheet-actions { display: flex; flex-wrap: wrap; gap: 11px; margin: 20px 0 6px; }
.bk-stat-row { display: flex; gap: 22px; margin-top: 18px; flex-wrap: wrap; }
.bk-stat { display: flex; flex-direction: column; gap: 2px; }
.bk-stat b { font-size: 19px; font-family: var(--bk-font-serif); }
.bk-stat span { font-size: 11.5px; color: var(--bk-muted); font-weight: 700; letter-spacing: .6px; text-transform: uppercase; }

.bk-section-label { font-size: 12px; letter-spacing: 2px; text-transform: uppercase; color: var(--bk-muted); font-weight: 800; margin: 26px 0 12px; display: flex; align-items: center; gap: 10px; }
.bk-section-label::after { content: ''; flex: 1; height: 1px; background: var(--bk-border); }

/* герои в карточке */
.bk-char-strip { display: flex; gap: 12px; overflow-x: auto; padding: 4px 2px 10px; scrollbar-width: none; }
.bk-char-strip::-webkit-scrollbar { display: none; }
.bk-char-chip { flex: 0 0 auto; width: 92px; text-align: center; cursor: pointer; transition: transform .2s; }
.bk-char-chip:hover { transform: translateY(-3px); }
.bk-char-chip img { width: 68px; height: 68px; border-radius: 22px; object-fit: cover; border: 2px solid var(--bk-border-strong); transition: border-color .2s, box-shadow .2s; }
.bk-char-chip:hover img { border-color: var(--bk-accent); box-shadow: 0 8px 20px -8px rgba(217,119,87,.7); }
.bk-char-chip b { display: block; font-size: 12px; margin-top: 7px; line-height: 1.25; }
.bk-char-chip span { font-size: 10.5px; color: var(--bk-muted); font-weight: 600; }

/* главы */
.bk-chapter-list { display: flex; flex-direction: column; gap: 8px; }
.bk-chapter-item {
  display: flex; align-items: center; gap: 14px; padding: 13px 16px;
  background: color-mix(in srgb, var(--bk-text) 4.5%, transparent); border: 1px solid var(--bk-border); border-radius: 14px;
}
.bk-chapter-item .num {
  width: 34px; height: 34px; flex: 0 0 34px; border-radius: 11px; display: grid; place-items: center;
  font-family: var(--bk-font-serif); font-weight: 800; background: rgba(217,119,87,.14); color: var(--bk-accent-hi);
}
.bk-chapter-item b { font-size: 14px; }
.bk-chapter-item span { font-size: 12px; color: var(--bk-muted); margin-left: auto; white-space: nowrap; }

/* ============ ТОСТЫ ============ */
.bk-toast-zone { position: fixed; bottom: calc(20px + var(--safe-bottom)); left: 50%; transform: translateX(-50%); z-index: 4000; display: flex; flex-direction: column; gap: 8px; align-items: center; pointer-events: none; width: max-content; max-width: 92vw; }
.bk-toast {
  padding: 13px 20px; border-radius: 100px; font-size: 14px; font-weight: 600;
  background: color-mix(in srgb, var(--bk-bg-deep) 88%, transparent); border: 1px solid var(--bk-border-strong);
  backdrop-filter: blur(16px); box-shadow: var(--bk-shadow-soft);
  display: flex; align-items: center; gap: 10px;
  animation: bkToastIn .35s cubic-bezier(.22,1,.36,1);
}
.bk-toast.err { border-color: rgba(229,72,77,.5); }
.bk-toast.err i { color: var(--bk-danger); }
.bk-toast.ok i { color: var(--bk-success); }
.bk-toast.out { animation: bkToastOut .3s forwards; }
@keyframes bkToastIn { from { opacity: 0; transform: translateY(16px) scale(.92); } }
@keyframes bkToastOut { to { opacity: 0; transform: translateY(10px) scale(.95); } }

/* ============ МОДАЛКА ============ */
.bk-modal-backdrop { position: fixed; inset: 0; z-index: 2000; background: color-mix(in srgb, var(--bk-bg-deep) 72%, transparent); backdrop-filter: blur(10px); display: grid; place-items: center; padding: 18px; opacity: 0; transition: opacity .28s; }
.bk-modal-backdrop.on { opacity: 1; }
.bk-modal {
  width: 100%; max-width: 480px; max-height: 86dvh; overflow-y: auto;
  background: var(--bk-bg-raise); border: 1px solid var(--bk-border-strong);
  border-radius: var(--bk-r-lg); padding: 26px; box-shadow: var(--bk-shadow);
  transform: translateY(24px) scale(.96); transition: transform .35s cubic-bezier(.22,1,.36,1);
}
.bk-modal-backdrop.on .bk-modal { transform: none; }
.bk-modal h3 { font-family: var(--bk-font-serif); font-size: 22px; margin: 0 0 8px; }
.bk-modal p.sub { color: var(--bk-dim); font-size: 14px; line-height: 1.5; margin: 0 0 18px; }

.bk-field { margin-bottom: 14px; }
.bk-field label { display: block; font-size: 12px; font-weight: 700; letter-spacing: .8px; text-transform: uppercase; color: var(--bk-muted); margin-bottom: 7px; }
.bk-input, .bk-textarea, .bk-select {
  width: 100%; background: color-mix(in srgb, var(--bk-bg-deep) 65%, transparent); border: 1.5px solid var(--bk-border);
  border-radius: 13px; color: var(--bk-text); font-size: 15px; font-family: inherit;
  padding: 13px 15px; outline: none; transition: border-color .2s, box-shadow .2s;
}
.bk-input:focus, .bk-textarea:focus, .bk-select:focus { border-color: rgba(217,119,87,.6); box-shadow: 0 0 0 4px rgba(217,119,87,.12); }
.bk-textarea { resize: vertical; min-height: 96px; line-height: 1.55; }
.bk-select { appearance: none; cursor: pointer; }

/* переключатель */
.bk-switch { position: relative; width: 46px; height: 27px; flex: 0 0 46px; border-radius: 100px; background: color-mix(in srgb, var(--bk-text) 14%, transparent); cursor: pointer; transition: background .25s; border: none; }
.bk-switch::after { content: ''; position: absolute; top: 3px; left: 3px; width: 21px; height: 21px; border-radius: 50%; background: #fff; transition: transform .25s cubic-bezier(.22,1,.36,1); box-shadow: 0 2px 6px rgba(0,0,0,.4); }
.bk-switch.on { background: var(--bk-accent); }
.bk-switch.on::after { transform: translateX(19px); }

/* ============ ПУСТЫЕ СОСТОЯНИЯ ============ */
.bk-empty { text-align: center; padding: 60px 24px; color: var(--bk-muted); }
.bk-empty .ico { font-size: 40px; margin-bottom: 14px; opacity: .5; }
.bk-empty b { display: block; font-family: var(--bk-font-serif); font-size: 19px; color: var(--bk-dim); margin-bottom: 6px; }

/* спиннер */
.bk-spin { width: 22px; height: 22px; border: 2.5px solid color-mix(in srgb, var(--bk-text) 20%, transparent); border-top-color: var(--bk-accent); border-radius: 50%; animation: bkSpin .8s linear infinite; }
@keyframes bkSpin { to { transform: rotate(360deg); } }

/* сетка результатов поиска */
.bk-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(140px, 1fr)); gap: 18px 14px; padding: 10px clamp(16px, 4vw, 48px) 30px; }
.bk-grid .bk-card { width: auto; }

/* ============ АДАПТИВ ============ */
@media (max-width: 560px) {
  .bk-topbar { gap: 6px; padding-left: 10px; padding-right: 10px; }
  .bk-top-actions { gap: 6px; }
  .bk-home-btn { display: none; }
  .bk-logo { font-size: 17px; }
  .bk-logo .bk-logo-mark { width: 30px; height: 30px; font-size: 14px; }
  .bk-iconbtn { width: 36px; height: 36px; border-radius: 12px; font-size: 14px; }
  .bk-avatar-mini { width: 34px; height: 34px; }
  .bk-search-wrap.open .bk-search { width: 40vw; }
}
/* очень узкие экраны: оставляем только логотип-значок и жмём иконки */
@media (max-width: 400px) {
  .bk-topbar { gap: 5px; }
  .bk-top-actions { gap: 5px; }
  .bk-logo span:not(.bk-logo-mark) { display: none; }  /* прячем текст, оставляем значок */
  .bk-iconbtn { width: 34px; height: 34px; font-size: 13px; }
  .bk-avatar-mini { width: 33px; height: 33px; }
  .bk-search-wrap.open .bk-search { width: 46vw; }
}
@media (max-width: 760px) {
  .bk-sheet-inner { margin: 0; border-radius: 0; min-height: 100dvh; border: none; }
  .bk-sheet-body { flex-direction: column; margin-top: -140px; }
  .bk-sheet-cover { width: 150px; margin: 0 auto; }
  .bk-sheet-info { padding-top: 0; text-align: center; }
  .bk-sheet-meta, .bk-sheet-actions, .bk-stat-row { justify-content: center; }
  .bk-sheet-desc { margin: 0 auto; }
  .bk-section-label { justify-content: center; }
  .bk-section-label::after { display: none; }
  .bk-hero { height: min(70vh, 600px); }
  .bk-hero-actions .bk-btn, .bk-hero-actions .bk-btn-ghost { flex: 1 1 auto; }
  .bk-rank-num { -webkit-text-stroke-width: 2px; }
  /* точки перелистывания — по центру у самого низа, кнопки поднимаем над ними */
  .bk-hero-dots { left: 0; right: 0; bottom: 12px; justify-content: center; }
  .bk-hero-content { padding-bottom: 40px; }
  .bk-hero-meta { font-size: 13px; gap: 6px 12px; }
  .bk-hero-title { margin-bottom: 12px; }
}

/* компактный баннер, когда нет закреплённых «топ» */
.bk-hero.bk-hero-slim { height: clamp(300px, 42vh, 420px); }
.bk-hero.bk-hero-slim .bk-hero-dots { display: none; }
@media (min-width: 1500px) {
  .bk-hero-content, .bk-shelf-head, .bk-row, .bk-grid { max-width: 1560px; margin-left: auto; margin-right: auto; }
}