/* ==========================================================================
   海角先锋影展与纪录片论坛 —— 主样式表
   视觉方案：胶片棕 + 牛皮纸黄 复古文艺
   配色：主色 #5D4037 / 辅助 #8D6E63 / 背景 #FDF5E6 / 卡片 #FFF8DC / 正文 #3E2723
   ========================================================================== */

:root {
  --color-film-brown: #5D4037;   /* 胶片深棕（主色） */
  --color-khaki: #8D6E63;        /* 做旧卡其（辅助） */
  --color-kraft: #FDF5E6;        /* 牛皮纸黄（背景） */
  --color-card: #FFF8DC;         /* 旧白（卡片） */
  --color-ink: #3E2723;          /* 深棕（正文） */
  --color-accent: #A1887F;       /* 柔和棕调点缀 */
  --color-highlight: #B71C1C;    /* 票根撕裂红/导演空降标签 */
  --color-line: #D7CCC8;         /* 分割线 */
  --shadow-soft: 0 6px 22px rgba(62, 39, 35, 0.18);
  --shadow-card: 0 3px 12px rgba(62, 39, 35, 0.12);
  --radius: 4px;
  --font-serif: "Noto Serif SC", "Songti SC", "STSong", "SimSun", serif;
  --font-sans: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  --maxw: 1200px;
}

/* ---------- 基础重置 ---------- */
* { margin: 0; padding: 0; box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  font-family: var(--font-serif);
  background-color: var(--color-kraft);
  /* 牛皮纸噪点质感 */
  background-image:
    radial-gradient(circle at 20% 30%, rgba(141,110,99,0.05) 0, transparent 40%),
    radial-gradient(circle at 80% 70%, rgba(93,64,55,0.05) 0, transparent 40%);
  color: var(--color-ink);
  line-height: 1.85;
  font-size: 17px;
  overflow-x: hidden;
}

a { color: var(--color-film-brown); text-decoration: none; transition: color .25s; }
a:hover { color: var(--color-highlight); }

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

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

/* ---------- 老电影胶片刮痕特效（全局叠加层） ---------- */
.film-scratch-overlay {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 9999;
  opacity: 0.06;
  background-image:
    repeating-linear-gradient(90deg, transparent 0 3px, rgba(62,39,35,.6) 3px 4px, transparent 4px 80px),
    repeating-linear-gradient(90deg, transparent 0 50px, rgba(0,0,0,.4) 50px 51px, transparent 51px 200px);
  animation: scratch-move 0.5s steps(4) infinite;
}
@keyframes scratch-move {
  0% { transform: translateX(0); }
  100% { transform: translateX(-12px); }
}

/* ---------- 顶部导航 ---------- */
.site-header {
  position: sticky; top: 0; z-index: 1000;
  background: rgba(93, 64, 55, 0.97);
  border-bottom: 3px double var(--color-card);
  box-shadow: var(--shadow-soft);
}
.nav-wrap {
  display: flex; align-items: center; justify-content: space-between;
  max-width: var(--maxw); margin: 0 auto; padding: 10px 20px;
}
.brand { display: flex; align-items: center; gap: 12px; }
.brand img { width: 46px; height: 46px; }
.brand-text { color: var(--color-card); font-family: var(--font-serif); }
.brand-text .site-title { font-size: 21px; font-weight: 700; letter-spacing: 1px; display: block; }
.brand-text .site-sub { font-size: 11px; color: var(--color-line); letter-spacing: 2px; }

.main-nav ul { list-style: none; display: flex; gap: 6px; flex-wrap: wrap; }
.main-nav a {
  color: var(--color-card); padding: 8px 13px; border-radius: var(--radius);
  font-size: 15px; letter-spacing: 1px;
}
.main-nav a:hover, .main-nav a.active {
  background: var(--color-khaki); color: #fff;
}
.nav-toggle {
  display: none; background: none; border: 1px solid var(--color-card);
  color: var(--color-card); font-size: 22px; padding: 4px 10px; border-radius: var(--radius); cursor: pointer;
}

/* ---------- Hero 放映机区 ---------- */
.hero {
  position: relative;
  min-height: 72vh;
  display: flex; align-items: center;
  color: var(--color-card);
  background: #2a1c18;
  overflow: hidden;
}
.hero-bg {
  position: absolute; inset: 0; width: 100%; height: 100%;
  object-fit: cover; opacity: 0.55;
  animation: flicker 3.6s infinite;
}
@keyframes flicker {
  0%,100% { opacity: 0.55; }
  48% { opacity: 0.5; }
  50% { opacity: 0.66; }
  52% { opacity: 0.48; }
  70% { opacity: 0.6; }
}
.hero-inner { position: relative; z-index: 2; max-width: var(--maxw); margin: 0 auto; padding: 60px 24px; }
.hero h1 {
  font-size: clamp(30px, 5vw, 56px); line-height: 1.25;
  text-shadow: 2px 2px 8px rgba(0,0,0,.6); margin-bottom: 18px; letter-spacing: 2px;
}
.hero p.lede { font-size: clamp(16px, 2vw, 20px); max-width: 640px; color: #f0e6d2; margin-bottom: 30px; }
.hero-cta { display: flex; gap: 16px; flex-wrap: wrap; }

.btn {
  display: inline-block; padding: 13px 28px; border-radius: var(--radius);
  font-family: var(--font-serif); font-size: 16px; letter-spacing: 1px;
  cursor: pointer; border: 2px solid transparent; transition: all .25s;
}
.btn-primary { background: var(--color-highlight); color: #fff; border-color: var(--color-highlight); }
.btn-primary:hover { background: #8c1414; color: #fff; transform: translateY(-2px); }
.btn-ghost { background: transparent; color: var(--color-card); border-color: var(--color-card); }
.btn-ghost:hover { background: var(--color-card); color: var(--color-film-brown); }

/* ---------- 区块通用 ---------- */
.section { padding: 64px 0; }
.section-head { text-align: center; margin-bottom: 40px; }
.section-head h2 {
  font-size: clamp(24px, 3.5vw, 36px); color: var(--color-film-brown);
  display: inline-block; position: relative; padding-bottom: 14px; letter-spacing: 2px;
}
.section-head h2::after {
  content: ""; position: absolute; left: 50%; bottom: 0; transform: translateX(-50%);
  width: 80px; height: 3px; background: var(--color-highlight);
}
.section-head p { color: var(--color-khaki); margin-top: 12px; font-size: 16px; }
.section-alt { background: rgba(255, 248, 220, 0.5); }

/* ---------- 票根样式横向滚动片单 ---------- */
.ticket-scroll {
  display: flex; gap: 22px; overflow-x: auto; padding: 12px 4px 24px;
  scroll-snap-type: x mandatory;
}
.ticket-scroll::-webkit-scrollbar { height: 8px; }
.ticket-scroll::-webkit-scrollbar-thumb { background: var(--color-khaki); border-radius: 8px; }
.ticket-card {
  flex: 0 0 280px; scroll-snap-align: start;
  background: var(--color-card);
  border: 1px dashed var(--color-khaki);
  border-radius: var(--radius);
  box-shadow: var(--shadow-card);
  overflow: hidden; position: relative;
  transition: transform .3s;
}
.ticket-card:hover { transform: translateY(-6px) rotate(-0.6deg); }
/* 票根撕裂边缘 */
.ticket-card::before, .ticket-card::after {
  content: ""; position: absolute; width: 18px; height: 18px; border-radius: 50%;
  background: var(--color-kraft); top: 56%;
}
.ticket-card::before { left: -9px; }
.ticket-card::after { right: -9px; }
.ticket-card img { aspect-ratio: 3/4; object-fit: cover; }
.ticket-body { padding: 16px; }
.ticket-unit {
  display: inline-block; font-size: 12px; background: var(--color-film-brown);
  color: var(--color-card); padding: 3px 10px; border-radius: 20px; margin-bottom: 8px;
}
.ticket-body h3 { font-size: 18px; margin-bottom: 6px; color: var(--color-ink); }
.ticket-meta { font-size: 13px; color: var(--color-khaki); border-top: 1px dashed var(--color-line); padding-top: 8px; margin-top: 8px; }

/* ---------- 卡片网格 ---------- */
.grid { display: grid; gap: 26px; }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }

.card {
  background: var(--color-card); border-radius: var(--radius);
  box-shadow: var(--shadow-card); overflow: hidden;
  border: 1px solid var(--color-line); transition: transform .3s, box-shadow .3s;
  display: flex; flex-direction: column;
}
.card:hover { transform: translateY(-5px); box-shadow: var(--shadow-soft); }
.card img { aspect-ratio: 16/9; object-fit: cover; }
.card-body { padding: 20px; flex: 1; display: flex; flex-direction: column; }
.card-body h3 { font-size: 20px; margin-bottom: 10px; color: var(--color-film-brown); }
.card-body p { font-size: 15px; color: var(--color-ink); margin-bottom: 14px; flex: 1; }
.card-link { font-size: 14px; font-weight: 700; color: var(--color-highlight); }

/* ---------- 论坛树状结构讨论区 ---------- */
.forum-tree { list-style: none; }
.forum-node {
  background: var(--color-card); border-left: 4px solid var(--color-khaki);
  border-radius: var(--radius); box-shadow: var(--shadow-card);
  padding: 18px 22px; margin-bottom: 14px; transition: border-color .25s;
}
.forum-node:hover { border-left-color: var(--color-highlight); }
.forum-node .thread-title { font-size: 18px; color: var(--color-film-brown); margin-bottom: 6px; }
.forum-node .thread-meta { font-size: 13px; color: var(--color-khaki); }
.tag {
  display: inline-block; font-size: 12px; padding: 2px 9px; border-radius: 3px;
  margin-right: 8px; color: #fff;
}
.tag-director { background: var(--color-highlight); }   /* 导演空降 */
.tag-longreview { background: var(--color-film-brown); } /* 深度长评 */
.tag-hot { background: #E65100; }
.forum-children { list-style: none; margin: 12px 0 0 22px; border-left: 2px dashed var(--color-line); padding-left: 18px; }
.forum-children li { font-size: 14px; color: var(--color-ink); padding: 5px 0; }

/* ---------- 排片时间表 ---------- */
.schedule-table { width: 100%; border-collapse: collapse; background: var(--color-card); box-shadow: var(--shadow-card); }
.schedule-table th, .schedule-table td { border: 1px solid var(--color-line); padding: 13px 16px; text-align: left; font-size: 15px; }
.schedule-table th { background: var(--color-film-brown); color: var(--color-card); letter-spacing: 1px; }
.schedule-table tr:nth-child(even) td { background: rgba(141,110,99,0.06); }
.schedule-filter { display: flex; gap: 10px; flex-wrap: wrap; margin-bottom: 18px; }
.schedule-filter button {
  background: var(--color-card); border: 1px solid var(--color-khaki); color: var(--color-film-brown);
  padding: 7px 16px; border-radius: 20px; cursor: pointer; font-family: var(--font-serif); transition: all .2s;
}
.schedule-filter button.active, .schedule-filter button:hover { background: var(--color-film-brown); color: var(--color-card); }

/* ---------- 众筹进度条 ---------- */
.fund-card { background: var(--color-card); border: 1px solid var(--color-line); border-radius: var(--radius); box-shadow: var(--shadow-card); overflow: hidden; }
.fund-card img { aspect-ratio: 16/9; object-fit: cover; }
.fund-body { padding: 22px; }
.progress-track { background: var(--color-line); border-radius: 20px; height: 16px; overflow: hidden; margin: 14px 0 8px; }
.progress-fill { height: 100%; background: linear-gradient(90deg, var(--color-khaki), var(--color-highlight)); border-radius: 20px; transition: width 1.2s ease; }
.fund-stats { display: flex; justify-content: space-between; font-size: 14px; color: var(--color-khaki); }
.fund-stats strong { color: var(--color-film-brown); font-size: 18px; }

/* ---------- 拉片分析器（批注） ---------- */
.analyzer { background: #2a1c18; border-radius: var(--radius); padding: 22px; color: var(--color-card); }
.analyzer-frame { position: relative; border: 2px solid var(--color-khaki); border-radius: var(--radius); overflow: hidden; }
.analyzer-frame img { width: 100%; }
.annotation-dot {
  position: absolute; width: 26px; height: 26px; background: var(--color-highlight);
  border: 2px solid #fff; border-radius: 50%; color: #fff; font-size: 13px;
  display: flex; align-items: center; justify-content: center; cursor: pointer;
  box-shadow: 0 0 0 4px rgba(183,28,28,.3); animation: pulse 2s infinite;
}
@keyframes pulse { 0%,100% { box-shadow: 0 0 0 4px rgba(183,28,28,.3);} 50% { box-shadow: 0 0 0 9px rgba(183,28,28,0);} }
.annotation-list { margin-top: 16px; }
.annotation-list li { list-style: none; padding: 8px 0; border-bottom: 1px dashed rgba(255,248,220,.25); font-size: 14px; }
.annotation-list .ts { color: var(--color-highlight); font-weight: 700; margin-right: 10px; }

/* ---------- 面包屑 ---------- */
.breadcrumb { padding: 16px 0; font-size: 14px; color: var(--color-khaki); }
.breadcrumb a { color: var(--color-film-brown); }
.breadcrumb span { margin: 0 8px; }

/* ---------- 内容排版 ---------- */
.page-hero {
  background: linear-gradient(rgba(93,64,55,.82), rgba(62,39,35,.86));
  color: var(--color-card); padding: 56px 0; text-align: center;
}
.page-hero h1 { font-size: clamp(26px, 4vw, 42px); letter-spacing: 2px; margin-bottom: 12px; }
.page-hero p { max-width: 720px; margin: 0 auto; color: #f0e6d2; }

.prose { max-width: 860px; margin: 0 auto; }
.prose h2 { color: var(--color-film-brown); font-size: 27px; margin: 38px 0 16px; padding-left: 14px; border-left: 5px solid var(--color-highlight); }
.prose h3 { color: var(--color-khaki); font-size: 21px; margin: 28px 0 12px; }
.prose p { margin-bottom: 18px; text-align: justify; }
.prose ul, .prose ol { margin: 0 0 18px 26px; }
.prose li { margin-bottom: 8px; }
.prose blockquote {
  border-left: 4px solid var(--color-khaki); background: rgba(141,110,99,.08);
  padding: 14px 20px; margin: 20px 0; font-style: italic; color: var(--color-ink);
}
.prose img { border-radius: var(--radius); box-shadow: var(--shadow-card); margin: 22px 0; }

/* ---------- FAQ ---------- */
.faq-item { background: var(--color-card); border: 1px solid var(--color-line); border-radius: var(--radius); margin-bottom: 12px; overflow: hidden; }
.faq-q { padding: 16px 20px; font-weight: 700; color: var(--color-film-brown); cursor: pointer; display: flex; justify-content: space-between; }
.faq-q::after { content: "+"; font-size: 22px; color: var(--color-highlight); }
.faq-item.open .faq-q::after { content: "−"; }
.faq-a { padding: 0 20px; max-height: 0; overflow: hidden; transition: max-height .3s, padding .3s; }
.faq-item.open .faq-a { padding: 0 20px 18px; max-height: 400px; }

/* ---------- 相关链接 ---------- */
.related-links { display: flex; flex-wrap: wrap; gap: 12px; }
.related-links a {
  background: var(--color-card); border: 1px solid var(--color-khaki);
  padding: 8px 16px; border-radius: 20px; font-size: 14px;
}
.related-links a:hover { background: var(--color-film-brown); color: var(--color-card); }

/* ---------- 搜索 ---------- */
.search-box { display: flex; gap: 10px; max-width: 640px; margin: 0 auto 30px; }
.search-box input {
  flex: 1; padding: 13px 18px; border: 2px solid var(--color-khaki); border-radius: var(--radius);
  font-family: var(--font-serif); font-size: 16px; background: var(--color-card); color: var(--color-ink);
}
.search-result-item { background: var(--color-card); border: 1px solid var(--color-line); border-radius: var(--radius); padding: 18px 22px; margin-bottom: 14px; }
.search-result-item h3 { color: var(--color-film-brown); margin-bottom: 6px; }
.search-result-item .url { font-size: 13px; color: var(--color-accent); }

/* ---------- 页脚 ---------- */
.site-footer { background: #2a1c18; color: var(--color-line); padding: 50px 0 24px; margin-top: 40px; }
.footer-grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr 1fr; gap: 30px; }
.footer-grid h4 { color: var(--color-card); font-size: 16px; margin-bottom: 14px; letter-spacing: 1px; }
.footer-grid ul { list-style: none; }
.footer-grid li { margin-bottom: 8px; }
.footer-grid a { color: var(--color-line); font-size: 14px; }
.footer-grid a:hover { color: var(--color-card); }
.footer-grid p { font-size: 14px; line-height: 1.7; }
.footer-bottom { border-top: 1px solid rgba(255,248,220,.15); margin-top: 30px; padding-top: 18px; text-align: center; font-size: 13px; color: var(--color-accent); }

/* ---------- 幕布拉开效果 ---------- */
.curtain-reveal { animation: curtain .9s ease both; }
@keyframes curtain { from { clip-path: inset(0 0 100% 0); opacity: 0; } to { clip-path: inset(0 0 0 0); opacity: 1; } }

/* ---------- 响应式断点 ---------- */
@media (max-width: 980px) {
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .grid-3 { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 760px) {
  .nav-toggle { display: block; }
  .main-nav { display: none; width: 100%; }
  .main-nav.open { display: block; }
  .main-nav ul { flex-direction: column; width: 100%; padding-top: 10px; }
  .nav-wrap { flex-wrap: wrap; }
  .grid-2, .grid-3 { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
  body { font-size: 16px; }
  .schedule-table { display: block; overflow-x: auto; white-space: nowrap; }
}