/* ==========================================================================
   51动漫 — 动漫观影指南与片单推荐站 公共样式
   视觉主题：温暖橙 + 书架布局（图书馆 / 放映室）
   主色 #FF9800 活力橙 | 辅助 #FFB74D 暖阳橙 | 背景 #FFF3E0 纸张白
   卡片 #FFFFFF | 强调 #009688 护眼绿
   标题字体：ZCOOL KuaiLe / Noto Serif SC | 正文：Noto Sans SC
   ========================================================================== */

:root {
  --c-primary: #FF9800;
  --c-primary-soft: #FFB74D;
  --c-bg: #FFF3E0;
  --c-card: #FFFFFF;
  --c-accent: #009688;
  --c-accent-dark: #00796B;
  --c-ink: #4E342E;       /* 深棕墨色，正文 */
  --c-ink-soft: #795548;  /* 次级文字 */
  --c-line: #FFE0B2;      /* 浅橙描边 */
  --shadow-sm: 0 2px 8px rgba(255, 152, 0, 0.12);
  --shadow-md: 0 8px 24px rgba(255, 152, 0, 0.18);
  --shadow-lg: 0 16px 40px rgba(120, 70, 20, 0.18);
  --radius: 20px;
  --radius-lg: 28px;
  --maxw: 1200px;
  --ease-out: cubic-bezier(0.23, 1, 0.32, 1);
}

* { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; }

body {
  font-family: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  color: var(--c-ink);
  background-color: var(--c-bg);
  background-image:
    radial-gradient(circle at 12% 18%, rgba(255, 183, 77, 0.18), transparent 42%),
    radial-gradient(circle at 88% 8%, rgba(0, 150, 136, 0.08), transparent 38%);
  line-height: 1.85;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

h1, h2, h3, h4 {
  font-family: "ZCOOL KuaiLe", "Noto Serif SC", "Noto Sans SC", serif;
  color: var(--c-ink);
  line-height: 1.35;
  font-weight: 400;
}

a { color: var(--c-accent-dark); text-decoration: none; transition: color .2s var(--ease-out); }
a:hover { color: var(--c-primary); }

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

.container { width: 100%; max-width: var(--maxw); margin: 0 auto; padding: 0 20px; }

/* ---------- 跳过导航（无障碍） ---------- */
.skip-link {
  position: absolute; left: -999px; top: 0; z-index: 999;
  background: var(--c-accent); color: #fff; padding: 10px 18px; border-radius: 0 0 12px 0;
}
.skip-link:focus { left: 0; }

/* ---------- 顶部导航 ---------- */
.site-header {
  position: sticky; top: 0; z-index: 100;
  background: rgba(255, 248, 240, 0.92);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--c-line);
}
.nav {
  display: flex; align-items: center; justify-content: space-between;
  height: 72px; gap: 20px;
}
.brand { display: flex; align-items: center; gap: 12px; font-family: "ZCOOL KuaiLe", serif; font-size: 1.3rem; color: var(--c-ink); }
.brand img { width: 42px; height: 42px; border-radius: 12px; }
.brand b { color: var(--c-primary); font-weight: 400; }
.nav-links { display: flex; align-items: center; gap: 6px; list-style: none; flex-wrap: wrap; }
.nav-links a {
  display: inline-block; padding: 8px 14px; border-radius: 999px;
  color: var(--c-ink-soft); font-size: .95rem; transition: all .2s var(--ease-out);
}
.nav-links a:hover, .nav-links a.active { background: var(--c-primary); color: #fff; }
.nav-cta { background: var(--c-accent); color: #fff !important; }
.nav-cta:hover { background: var(--c-accent-dark) !important; }
.nav-toggle { display: none; background: none; border: none; font-size: 1.6rem; cursor: pointer; color: var(--c-primary); }

@media (max-width: 920px) {
  .nav-toggle { display: block; }
  .nav-links {
    position: absolute; top: 72px; left: 0; right: 0;
    flex-direction: column; align-items: stretch;
    background: var(--c-bg); padding: 14px 20px; gap: 4px;
    box-shadow: var(--shadow-md); max-height: 0; overflow: hidden; transition: max-height .3s var(--ease-out); padding-top: 0; padding-bottom: 0;
  }
  .nav-links.open { max-height: 640px; padding-top: 14px; padding-bottom: 14px; }
  .nav-links a { padding: 12px 14px; }
}

/* ---------- 通用区块 ---------- */
.section { padding: 64px 0; }
.section-tight { padding: 40px 0; }
.section-head { max-width: 760px; margin-bottom: 36px; }
.eyebrow {
  display: inline-block; background: var(--c-line); color: var(--c-accent-dark);
  padding: 5px 14px; border-radius: 999px; font-size: .82rem; letter-spacing: .04em; margin-bottom: 14px;
}
.section-head h2 { font-size: clamp(1.7rem, 3.4vw, 2.5rem); margin-bottom: 12px; }
.section-head p { color: var(--c-ink-soft); font-size: 1.05rem; }

/* ---------- 首屏 Hero ---------- */
.hero {
  position: relative; overflow: hidden;
  background:
    linear-gradient(105deg, rgba(255,243,224,0.97) 0%, rgba(255,243,224,0.55) 52%, rgba(255,243,224,0.15) 100%),
    url("../img/hero.webp") center/cover no-repeat;
  padding: 84px 0 96px;
}
.hero-grid { display: grid; grid-template-columns: 1.15fr 0.85fr; gap: 48px; align-items: center; }
.hero h1 { font-size: clamp(2.2rem, 5.2vw, 3.8rem); margin-bottom: 18px; color: var(--c-ink); text-shadow: 0 2px 0 rgba(255,255,255,.5); }
.hero .lead { font-size: clamp(1.05rem, 2vw, 1.3rem); color: var(--c-ink-soft); margin-bottom: 28px; max-width: 560px; }
.hero-actions { display: flex; gap: 14px; flex-wrap: wrap; }

/* ---------- 按钮 ---------- */
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 13px 26px; border-radius: 999px; font-weight: 500; font-size: 1rem;
  border: none; cursor: pointer; transition: transform .16s var(--ease-out), box-shadow .2s var(--ease-out), background .2s;
}
.btn:active { transform: scale(0.97); }
.btn-primary { background: var(--c-primary); color: #fff; box-shadow: var(--shadow-sm); }
.btn-primary:hover { background: #FB8C00; color: #fff; box-shadow: var(--shadow-md); transform: translateY(-2px); }
.btn-accent { background: var(--c-accent); color: #fff; }
.btn-accent:hover { background: var(--c-accent-dark); color: #fff; transform: translateY(-2px); }
.btn-ghost { background: #fff; color: var(--c-ink); border: 1.5px solid var(--c-line); }
.btn-ghost:hover { border-color: var(--c-primary); color: var(--c-primary); }

/* ---------- 选番问答器 ---------- */
.picker-card {
  background: var(--c-card); border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg); padding: 30px; border: 1px solid var(--c-line);
}
.picker-card h3 { font-size: 1.4rem; margin-bottom: 6px; color: var(--c-primary); }
.picker-step { margin-top: 18px; }
.picker-step > span { font-size: .92rem; color: var(--c-ink-soft); display: block; margin-bottom: 10px; }
.chip-row { display: flex; flex-wrap: wrap; gap: 10px; }
.chip {
  border: 1.5px solid var(--c-line); background: #FFF8F0; color: var(--c-ink-soft);
  padding: 9px 16px; border-radius: 999px; cursor: pointer; font-size: .92rem;
  transition: all .18s var(--ease-out); font-family: inherit;
}
.chip:hover { border-color: var(--c-primary-soft); }
.chip.selected { background: var(--c-primary); border-color: var(--c-primary); color: #fff; transform: translateY(-1px); }
.picker-result {
  margin-top: 20px; background: #E0F2F1; border-left: 4px solid var(--c-accent);
  border-radius: 14px; padding: 16px 18px; display: none;
}
.picker-result.show { display: block; animation: fadeUp .4s var(--ease-out); }
.picker-result b { color: var(--c-accent-dark); }

/* ---------- 卡片网格（书架） ---------- */
.shelf {
  display: grid; gap: 24px;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
}
.book-card {
  background: var(--c-card); border-radius: var(--radius); overflow: hidden;
  box-shadow: var(--shadow-sm); border: 1px solid var(--c-line);
  display: flex; flex-direction: column; transition: transform .26s var(--ease-out), box-shadow .26s var(--ease-out);
}
.book-card:hover { transform: translateY(-8px); box-shadow: var(--shadow-md); }
.book-card .thumb { aspect-ratio: 4/3; overflow: hidden; background: var(--c-line); }
.book-card .thumb img { width: 100%; height: 100%; object-fit: cover; transition: transform .4s var(--ease-out); }
.book-card:hover .thumb img { transform: scale(1.05); }
.book-card .body { padding: 18px 18px 20px; display: flex; flex-direction: column; gap: 10px; flex: 1; }
.book-card h3 { font-size: 1.2rem; }
.book-card p { color: var(--c-ink-soft); font-size: .92rem; }
.tag-row { display: flex; flex-wrap: wrap; gap: 6px; margin-top: auto; }
.tag { font-size: .76rem; background: var(--c-line); color: var(--c-accent-dark); padding: 3px 10px; border-radius: 999px; }
.poster-card .thumb { aspect-ratio: 3/4; }

/* ---------- 收藏按钮 ---------- */
.fav-btn {
  align-self: flex-start; background: #FFF3E0; border: 1.5px solid var(--c-line);
  color: var(--c-ink-soft); padding: 7px 14px; border-radius: 999px; cursor: pointer; font-size: .85rem;
  font-family: inherit; transition: all .18s var(--ease-out);
}
.fav-btn:hover { border-color: var(--c-primary); color: var(--c-primary); }
.fav-btn.faved { background: var(--c-primary); color: #fff; border-color: var(--c-primary); }

/* ---------- 时间线（观看顺序） ---------- */
.timeline { position: relative; margin: 30px 0; padding-left: 28px; }
.timeline::before { content: ""; position: absolute; left: 8px; top: 6px; bottom: 6px; width: 3px; background: var(--c-primary-soft); border-radius: 3px; }
.tl-item { position: relative; margin-bottom: 24px; background: var(--c-card); border-radius: 16px; padding: 16px 20px; box-shadow: var(--shadow-sm); border: 1px solid var(--c-line); }
.tl-item::before { content: ""; position: absolute; left: -24px; top: 22px; width: 14px; height: 14px; border-radius: 50%; background: var(--c-accent); border: 3px solid #fff; box-shadow: 0 0 0 2px var(--c-accent); }
.tl-item h4 { font-size: 1.1rem; margin-bottom: 4px; }
.tl-item .meta { font-size: .82rem; color: var(--c-primary); margin-bottom: 6px; }

/* ---------- 时长计算器 ---------- */
.calc-card { background: var(--c-card); border-radius: var(--radius-lg); padding: 26px; box-shadow: var(--shadow-md); border: 1px solid var(--c-line); }
.calc-row { display: flex; flex-wrap: wrap; gap: 16px; align-items: flex-end; }
.calc-field { flex: 1; min-width: 140px; }
.calc-field label { display: block; font-size: .88rem; color: var(--c-ink-soft); margin-bottom: 6px; }
.calc-field input, .filter-field select, .filter-field input, .search-box input {
  width: 100%; padding: 11px 14px; border-radius: 12px; border: 1.5px solid var(--c-line);
  background: #FFFCF8; font-family: inherit; font-size: 1rem; color: var(--c-ink);
}
.calc-field input:focus, .filter-field select:focus, .search-box input:focus { outline: 2px solid var(--c-primary-soft); border-color: var(--c-primary); }
.calc-output { margin-top: 20px; font-size: 1.15rem; color: var(--c-accent-dark); }
.calc-output b { font-size: 1.6rem; color: var(--c-primary); font-family: "ZCOOL KuaiLe", serif; }

/* ---------- 筛选器 ---------- */
.filter-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); gap: 16px; }
.filter-field label { display: block; font-size: .88rem; color: var(--c-ink-soft); margin-bottom: 6px; }

/* ---------- 内容排版 ---------- */
.prose { max-width: 820px; }
.prose p { margin-bottom: 18px; }
.prose h2 { font-size: 1.7rem; margin: 36px 0 14px; }
.prose h3 { font-size: 1.3rem; margin: 28px 0 10px; color: var(--c-accent-dark); }
.prose ul, .prose ol { margin: 0 0 18px 22px; }
.prose li { margin-bottom: 8px; }
.prose blockquote { border-left: 4px solid var(--c-primary); background: #FFF8F0; padding: 14px 20px; border-radius: 0 14px 14px 0; margin: 18px 0; color: var(--c-ink-soft); }

/* ---------- FAQ 折叠 ---------- */
.faq-item { background: var(--c-card); border: 1px solid var(--c-line); border-radius: 16px; margin-bottom: 12px; overflow: hidden; }
.faq-q { width: 100%; text-align: left; background: none; border: none; padding: 18px 20px; font-size: 1.05rem; font-family: "Noto Sans SC", sans-serif; font-weight: 500; color: var(--c-ink); cursor: pointer; display: flex; justify-content: space-between; align-items: center; gap: 12px; }
.faq-q::after { content: "+"; color: var(--c-primary); font-size: 1.4rem; transition: transform .2s var(--ease-out); }
.faq-item.open .faq-q::after { transform: rotate(45deg); }
.faq-a { max-height: 0; overflow: hidden; transition: max-height .3s var(--ease-out); color: var(--c-ink-soft); }
.faq-item.open .faq-a { max-height: 400px; }
.faq-a p { padding: 0 20px 18px; }

/* ---------- 信息条 / 信任要素 ---------- */
.info-strip { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 18px; }
.info-strip .item { background: var(--c-card); border-radius: 16px; padding: 22px; border: 1px solid var(--c-line); box-shadow: var(--shadow-sm); }
.info-strip .item b { display: block; font-size: 2rem; color: var(--c-primary); font-family: "ZCOOL KuaiLe", serif; }
.info-strip .item span { color: var(--c-ink-soft); font-size: .92rem; }

/* ---------- 面包屑 ---------- */
.crumbs { font-size: .88rem; color: var(--c-ink-soft); padding: 18px 0; }
.crumbs a { color: var(--c-accent-dark); }
.crumbs span { margin: 0 6px; color: var(--c-primary-soft); }

/* ---------- 相关链接 ---------- */
.related { display: flex; flex-wrap: wrap; gap: 12px; }
.related a { background: #fff; border: 1.5px solid var(--c-line); border-radius: 999px; padding: 9px 18px; font-size: .92rem; transition: all .18s var(--ease-out); }
.related a:hover { border-color: var(--c-primary); color: var(--c-primary); transform: translateY(-2px); }

/* ---------- 页脚 ---------- */
.site-footer { background: #4E342E; color: #FFE9CC; padding: 56px 0 28px; margin-top: 40px; }
.footer-grid { display: grid; grid-template-columns: 1.5fr repeat(3, 1fr); gap: 32px; }
.footer-grid h4 { color: #fff; font-size: 1.05rem; margin-bottom: 14px; font-family: "Noto Sans SC", sans-serif; font-weight: 600; }
.footer-grid ul { list-style: none; }
.footer-grid li { margin-bottom: 9px; }
.footer-grid a { color: #FFCC80; font-size: .92rem; }
.footer-grid a:hover { color: #fff; }
.footer-brand { display: flex; align-items: center; gap: 12px; margin-bottom: 14px; }
.footer-brand img { width: 40px; height: 40px; border-radius: 10px; }
.footer-brand b { font-family: "ZCOOL KuaiLe", serif; font-size: 1.2rem; color: #fff; }
.footer-note { font-size: .86rem; color: #D7B79C; max-width: 460px; }
.footer-bottom { border-top: 1px solid rgba(255,255,255,.12); margin-top: 36px; padding-top: 20px; font-size: .82rem; color: #C9A98E; text-align: center; }

@media (max-width: 860px) {
  .hero-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 520px) {
  .footer-grid { grid-template-columns: 1fr; }
}

/* ---------- 动画 ---------- */
@keyframes fadeUp { from { opacity: 0; transform: translateY(14px); } to { opacity: 1; transform: translateY(0); } }
.reveal { opacity: 0; transform: translateY(20px); transition: opacity .6s var(--ease-out), transform .6s var(--ease-out); }
.reveal.in { opacity: 1; transform: translateY(0); }

@media (prefers-reduced-motion: reduce) {
  * { animation: none !important; transition: none !important; scroll-behavior: auto !important; }
  .reveal { opacity: 1; transform: none; }
}

/* ---------- 404 / offline ---------- */
.center-screen { min-height: 64vh; display: flex; flex-direction: column; align-items: center; justify-content: center; text-align: center; gap: 18px; padding: 40px 20px; }
.center-screen h1 { font-size: clamp(3rem, 12vw, 7rem); color: var(--c-primary); }
.center-screen p { color: var(--c-ink-soft); max-width: 480px; }

/* ---------- 搜索结果 ---------- */
.search-box { display: flex; gap: 10px; max-width: 620px; margin-bottom: 22px; }
.search-box input { flex: 1; }
#searchResults .book-card { cursor: default; }
.no-result { color: var(--c-ink-soft); padding: 20px 0; }