/* =========================================================
   水墨影院  —— 设计系统
   ========================================================= */
:root {
  --ink-900: #0f1012;
  --ink-800: #1a1c1f;
  --ink-600: #3a3f45;
  --ink-400: #6b7079;
  --ink-300: #9aa0a6;
  --paper:   #f5f1e6;   /* 米宣纸底色 */
  --paper-2: #ece6d4;
  --seal:    #b33a3a;   /* 印章朱砂 */
  --seal-2:  #8f2a2a;
  --jade:    #4a6b5a;   /* 青苔 */
  --gold:    #b48a3c;
  --line:    rgba(20, 20, 20, .18);
  --shadow:  0 10px 30px rgba(30, 20, 10, .12);

  --radius:  14px;
  --ease:    cubic-bezier(.22, .61, .36, 1);
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: "Noto Serif SC", "Songti SC", "STSong", "SimSun", serif;
  color: var(--ink-800);
  background: var(--paper);
  background-image:
    radial-gradient(1200px 600px at 10% -10%, rgba(180,138,60,.10), transparent 60%),
    radial-gradient(900px 500px at 100% 0%, rgba(74,107,90,.10), transparent 60%),
    url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='160' height='160'><filter id='n'><feTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2' stitchTiles='stitch'/><feColorMatrix values='0 0 0 0 0.15  0 0 0 0 0.12  0 0 0 0 0.08  0 0 0 0.05 0'/></filter><rect width='100%' height='100%' filter='url(%23n)' opacity='0.45'/></svg>");
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }

/* ===== 容器与布局 ===== */
.container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }

/* ===== 顶部导航 ===== */
.navbar {
  position: sticky; top: 0; z-index: 50;
  backdrop-filter: blur(10px);
  background: rgba(245, 241, 230, .78);
  border-bottom: 1px solid var(--line);
}
.nav-inner {
  display: flex; align-items: center; justify-content: space-between;
  height: 68px;
}
.brand {
  display: flex; align-items: center; gap: 14px;
  font-size: 22px; letter-spacing: 4px;
}
.brand .seal {
  display: inline-flex; align-items: center; justify-content: center;
  width: 42px; height: 42px; border-radius: 8px;
  background: linear-gradient(135deg, var(--seal), var(--seal-2));
  color: #fff9e8; font-weight: 700; letter-spacing: 2px;
  box-shadow: 0 4px 14px rgba(179,58,58,.35), inset 0 0 0 2px rgba(255,255,255,.25);
  font-size: 16px;
  transform: rotate(-4deg);
}
.brand b { font-weight: 700; }
.brand .en { font-family: "Cormorant Garamond", Georgia, serif; color: var(--ink-400); font-size: 12px; letter-spacing: 3px; }

.nav-links { display: flex; gap: 6px; }
.nav-links a {
  position: relative;
  padding: 10px 16px; border-radius: 10px;
  color: var(--ink-600); transition: color .25s var(--ease), background .25s var(--ease);
  font-size: 15px;
}
.nav-links a:hover, .nav-links a.active {
  color: var(--ink-900);
  background: rgba(20,20,20,.05);
}

.nav-search {
  display: flex; align-items: center; gap: 8px;
  padding: 8px 14px; border-radius: 999px;
  background: rgba(255,255,255,.6);
  border: 1px solid var(--line);
  transition: box-shadow .25s var(--ease), border-color .25s var(--ease);
}
.nav-search:focus-within { border-color: var(--ink-600); box-shadow: 0 0 0 3px rgba(20,20,20,.06); }
.nav-search input {
  border: 0; outline: 0; background: transparent;
  width: 180px; font: inherit; color: var(--ink-800);
}
.nav-search input::placeholder { color: var(--ink-300); }

/* ===== 英雄区 ===== */
.hero {
  position: relative; overflow: hidden;
  padding: 80px 0 60px;
}
.hero::before {
  content: ""; position: absolute; inset: 0;
  background:
    url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 800 400'><g fill='none' stroke='%231a1c1f' stroke-opacity='0.08' stroke-width='1.2'><path d='M0,320 C150,260 260,310 400,280 C540,250 680,300 800,250'/><path d='M0,350 C150,300 260,340 400,320 C540,300 680,340 800,310'/></g></svg>") right bottom / 60% auto no-repeat;
  pointer-events: none;
}
.hero h1 {
  font-size: clamp(36px, 5vw, 64px);
  margin: 0 0 18px;
  letter-spacing: 6px;
  line-height: 1.2;
  font-weight: 600;
}
.hero h1 .accent { color: var(--seal); }
.hero p.lead {
  max-width: 640px; color: var(--ink-600);
  font-size: 17px; line-height: 1.9; letter-spacing: 1px;
}
.hero .poem {
  margin-top: 28px; color: var(--ink-400);
  font-style: italic; letter-spacing: 2px;
}

/* ===== 章节标题 ===== */
.section { padding: 36px 0 56px; }
.section-head {
  display: flex; align-items: flex-end; justify-content: space-between;
  margin-bottom: 24px;
}
.section-title {
  font-size: 26px; letter-spacing: 4px;
  display: flex; align-items: center; gap: 14px;
}
.section-title::before {
  content: ""; width: 8px; height: 26px;
  background: linear-gradient(var(--ink-900), var(--ink-400));
  border-radius: 2px;
}
.section-title small {
  font-family: "Cormorant Garamond", Georgia, serif;
  color: var(--ink-400); font-size: 13px; letter-spacing: 3px;
  font-weight: 400;
}

/* ===== 分类胶囊 ===== */
.chips { display: flex; flex-wrap: wrap; gap: 10px; }
.chip {
  padding: 8px 18px; border-radius: 999px;
  background: rgba(255,255,255,.55);
  border: 1px solid var(--line);
  font-size: 14px; letter-spacing: 2px;
  cursor: pointer; transition: all .25s var(--ease);
  color: var(--ink-600);
}
.chip:hover { color: var(--ink-900); border-color: var(--ink-600); transform: translateY(-1px); }
.chip.active {
  background: var(--ink-900); color: var(--paper);
  border-color: var(--ink-900);
}

/* ===== 卡片网格 ===== */
.grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(230px, 1fr));
  gap: 26px;
}
.card {
  position: relative;
  background: rgba(255,255,255,.55);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  transition: transform .4s var(--ease), box-shadow .4s var(--ease), border-color .4s var(--ease);
  cursor: pointer;
}
.card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow);
  border-color: var(--ink-600);
}
.card .poster {
  position: relative; aspect-ratio: 2/3; overflow: hidden;
  background: var(--paper-2);
}
.card .poster img {
  width: 100%; height: 100%; object-fit: cover;
  transition: transform .7s var(--ease), filter .7s var(--ease);
  filter: saturate(.9) contrast(1.02);
}
.card:hover .poster img { transform: scale(1.06); filter: saturate(1.05) contrast(1.05); }
.card .poster::after {
  content: ""; position: absolute; inset: 0;
  background: linear-gradient(180deg, transparent 55%, rgba(15,16,18,.8) 100%);
  pointer-events: none;
}
.card .badge {
  position: absolute; top: 10px; left: 10px;
  background: var(--seal); color: #fff9e8;
  font-size: 11px; letter-spacing: 2px;
  padding: 4px 8px; border-radius: 4px;
  transform: rotate(-3deg);
  box-shadow: 0 3px 8px rgba(179,58,58,.4);
}
.card .rating {
  position: absolute; bottom: 10px; right: 10px;
  color: var(--gold); font-size: 13px; letter-spacing: 1px;
  text-shadow: 0 2px 6px rgba(0,0,0,.6);
}
.card .meta { padding: 14px 16px 16px; }
.card h3 {
  margin: 0 0 6px; font-size: 16px; letter-spacing: 2px;
  font-weight: 600;
  display: -webkit-box; -webkit-line-clamp: 1; line-clamp: 1; -webkit-box-orient: vertical; overflow: hidden;
}
.card .sub {
  color: var(--ink-400); font-size: 12px; letter-spacing: 1px;
  display: -webkit-box; -webkit-line-clamp: 1; line-clamp: 1; -webkit-box-orient: vertical; overflow: hidden;
}

/* ===== 按钮 ===== */
.btn {
  display: inline-flex; align-items: center; justify-content: center;
  gap: 8px;
  padding: 12px 22px; border-radius: 10px;
  font: inherit; letter-spacing: 2px; font-size: 14px;
  border: 1px solid var(--ink-900);
  background: var(--ink-900); color: var(--paper);
  cursor: pointer; transition: all .25s var(--ease);
}
.btn:hover { transform: translateY(-1px); box-shadow: 0 8px 18px rgba(15,16,18,.25); }
.btn.ghost { background: transparent; color: var(--ink-900); }
.btn.ghost:hover { background: rgba(20,20,20,.06); box-shadow: none; }
.btn.seal  { background: var(--seal); border-color: var(--seal); }
.btn.seal:hover { background: var(--seal-2); border-color: var(--seal-2); }
.btn.sm { padding: 8px 14px; font-size: 13px; }
.btn.danger { background: transparent; color: var(--seal); border-color: var(--seal); }
.btn.danger:hover { background: var(--seal); color: #fff; }

/* ===== 播放页 ===== */
.player-wrap {
  background: #000; border-radius: var(--radius);
  overflow: hidden; box-shadow: var(--shadow);
  aspect-ratio: 16/9;
}
.player-wrap video { width: 100%; height: 100%; display: block; background: #000; }

.detail-grid {
  display: grid; grid-template-columns: 1.6fr 1fr; gap: 40px;
  margin-top: 28px;
}
@media (max-width: 880px) { .detail-grid { grid-template-columns: 1fr; } }

.detail h1 { font-size: 32px; letter-spacing: 4px; margin: 0 0 8px; }
.detail .subtitle { color: var(--ink-400); letter-spacing: 2px; margin-bottom: 18px; }
.tag-row { display: flex; flex-wrap: wrap; gap: 8px; margin: 12px 0 20px; }
.tag { padding: 3px 10px; border-radius: 6px; background: rgba(20,20,20,.06); font-size: 12px; letter-spacing: 1px; color: var(--ink-600); }
.info-list { margin: 0; padding: 0; list-style: none; }
.info-list li { padding: 10px 0; border-bottom: 1px dashed var(--line); display: flex; gap: 16px; }
.info-list .k { color: var(--ink-400); width: 72px; letter-spacing: 2px; flex: none; }
.desc { line-height: 2; color: var(--ink-600); letter-spacing: 1px; margin-top: 10px; white-space: pre-wrap; }

/* ===== 分页 ===== */
.pager {
  display: flex; justify-content: center; align-items: center; gap: 8px;
  margin-top: 32px;
}
.pager button {
  padding: 8px 14px; border-radius: 8px;
  border: 1px solid var(--line); background: rgba(255,255,255,.6);
  cursor: pointer; font: inherit; letter-spacing: 2px;
  transition: all .2s var(--ease);
}
.pager button:hover:not(:disabled) { border-color: var(--ink-600); }
.pager button:disabled { opacity: .4; cursor: not-allowed; }
.pager .cur { padding: 0 14px; color: var(--ink-400); font-size: 13px; letter-spacing: 2px; }

/* ===== 空态 / 加载 ===== */
.empty, .loading {
  text-align: center; padding: 80px 20px;
  color: var(--ink-400); letter-spacing: 3px;
}
.loading::after {
  content: ""; display: inline-block; width: 8px; height: 8px;
  margin-left: 8px; border-radius: 50%; background: var(--ink-400);
  animation: blink 1s var(--ease) infinite;
}
@keyframes blink { 50% { opacity: .2; } }

/* ===== Toast ===== */
.toast {
  position: fixed; top: 24px; left: 50%; transform: translateX(-50%) translateY(-20px);
  background: var(--ink-900); color: var(--paper);
  padding: 12px 22px; border-radius: 10px; letter-spacing: 2px;
  opacity: 0; pointer-events: none; transition: all .3s var(--ease);
  z-index: 100; box-shadow: var(--shadow);
}
.toast.show { opacity: 1; transform: translateX(-50%) translateY(0); }
.toast.error { background: var(--seal); }

/* ===== 页脚 ===== */
footer {
  margin-top: 80px; padding: 40px 0;
  border-top: 1px solid var(--line);
  color: var(--ink-400); letter-spacing: 2px;
  text-align: center; font-size: 13px;
}
footer .poem { margin-top: 6px; font-style: italic; }

/* ===== 淡入动画 ===== */
.fade-in { animation: fadeIn .6s var(--ease) both; }
@keyframes fadeIn { from { opacity: 0; transform: translateY(8px); } to { opacity: 1; transform: none; } }

/* ===== 后台 ===== */
.admin-layout { display: grid; grid-template-columns: 240px 1fr; min-height: 100vh; }
.admin-side {
  background: rgba(255,255,255,.5); border-right: 1px solid var(--line);
  padding: 24px 16px;
}
.admin-side .brand { margin-bottom: 28px; font-size: 18px; }
.admin-nav a {
  display: block; padding: 10px 14px; border-radius: 8px;
  color: var(--ink-600); letter-spacing: 2px;
  margin-bottom: 4px;
}
.admin-nav a:hover, .admin-nav a.active { background: rgba(20,20,20,.06); color: var(--ink-900); }
.admin-main { padding: 32px 40px; }

.table { width: 100%; border-collapse: separate; border-spacing: 0; }
.table th, .table td { padding: 14px 12px; text-align: left; border-bottom: 1px solid var(--line); font-size: 14px; }
.table th { color: var(--ink-400); font-weight: 500; letter-spacing: 2px; background: rgba(255,255,255,.4); }
.table tr:hover td { background: rgba(20,20,20,.03); }
.thumb { width: 48px; height: 68px; border-radius: 4px; object-fit: cover; background: var(--paper-2); }

.form-grid {
  display: grid; grid-template-columns: repeat(2, minmax(0,1fr)); gap: 16px 20px;
}
.form-grid .full { grid-column: 1 / -1; }
.field { display: flex; flex-direction: column; gap: 6px; }
.field label { color: var(--ink-400); font-size: 13px; letter-spacing: 2px; }
.field input, .field textarea, .field select {
  padding: 10px 12px; border-radius: 8px;
  border: 1px solid var(--line); background: #fff;
  font: inherit; color: var(--ink-800);
  transition: border-color .2s var(--ease), box-shadow .2s var(--ease);
}
.field input:focus, .field textarea:focus, .field select:focus {
  outline: 0; border-color: var(--ink-600); box-shadow: 0 0 0 3px rgba(20,20,20,.06);
}
.field textarea { min-height: 120px; resize: vertical; }

/* 对话框 */
.modal-mask {
  position: fixed; inset: 0; background: rgba(15,16,18,.55);
  display: none; align-items: center; justify-content: center;
  z-index: 90; backdrop-filter: blur(4px);
}
.modal-mask.show { display: flex; animation: fadeIn .25s var(--ease); }
.modal {
  width: min(760px, 92vw); max-height: 90vh; overflow: auto;
  background: var(--paper); border-radius: var(--radius);
  box-shadow: var(--shadow); padding: 28px 32px;
}
.modal h2 { margin: 0 0 20px; letter-spacing: 4px; font-size: 22px; }
.modal .actions { display: flex; justify-content: flex-end; gap: 10px; margin-top: 22px; }

/* 登录页 */
.login-wrap {
  min-height: 100vh; display: flex; align-items: center; justify-content: center; padding: 24px;
}
.login-card {
  width: 400px; max-width: 100%;
  background: rgba(255,255,255,.7); backdrop-filter: blur(6px);
  border: 1px solid var(--line); border-radius: var(--radius);
  padding: 40px 36px; box-shadow: var(--shadow);
}
.login-card h1 { margin: 0 0 6px; letter-spacing: 6px; font-size: 26px; }
.login-card p  { margin: 0 0 24px; color: var(--ink-400); letter-spacing: 2px; font-size: 13px; }

/* 简易滚动条 */
::-webkit-scrollbar { width: 10px; height: 10px; }
::-webkit-scrollbar-thumb { background: rgba(20,20,20,.2); border-radius: 8px; }
::-webkit-scrollbar-thumb:hover { background: rgba(20,20,20,.4); }

/* ================== 响应式 ================== */
/* 汉堡按钮，默认仅在移动端显示 */
.nav-toggle {
  display: none;
  width: 40px; height: 40px;
  align-items: center; justify-content: center;
  border: 1px solid var(--line); border-radius: 10px;
  background: rgba(255,255,255,.6);
  cursor: pointer; padding: 0;
}
.nav-toggle span, .nav-toggle span::before, .nav-toggle span::after {
  content: ""; display: block;
  width: 18px; height: 1.5px; background: var(--ink-800);
  transition: transform .3s var(--ease), opacity .3s var(--ease), top .3s var(--ease);
  position: relative;
}
.nav-toggle span::before { position: absolute; top: -6px; }
.nav-toggle span::after  { position: absolute; top:  6px; }
.nav-toggle.open span { background: transparent; }
.nav-toggle.open span::before { top: 0; transform: rotate(45deg); }
.nav-toggle.open span::after  { top: 0; transform: rotate(-45deg); }

/* 平板 */
@media (max-width: 1024px) {
  .nav-search input { width: 140px; }
  .grid { grid-template-columns: repeat(auto-fill, minmax(180px, 1fr)); gap: 20px; }
  .admin-layout { grid-template-columns: 200px 1fr; }
  .admin-main { padding: 28px 24px; }
  .hero { padding: 60px 0 40px; }
}

/* 手机 */
@media (max-width: 768px) {
  .container { padding: 0 16px; }
  .nav-inner { height: 60px; gap: 12px; }
  .brand { font-size: 18px; letter-spacing: 2px; gap: 10px; }
  .brand .seal { width: 36px; height: 36px; font-size: 14px; }
  .brand .en, .brand br { display: none; }
  .brand span:not(.seal):not(.en) b { display: inline; }

  .nav-toggle { display: inline-flex; }

  /* 抽屉式菜单 */
  .nav-links {
    position: fixed; top: 60px; right: 0;
    flex-direction: column; align-items: stretch;
    background: rgba(245, 241, 230, .98);
    backdrop-filter: blur(10px);
    border-left: 1px solid var(--line);
    border-bottom: 1px solid var(--line);
    width: min(260px, 72vw); padding: 16px;
    box-shadow: var(--shadow);
    transform: translateX(100%);
    transition: transform .3s var(--ease);
    z-index: 60;
    gap: 4px;
  }
  .nav-links.open { transform: translateX(0); }
  .nav-links a { padding: 14px 16px; font-size: 16px; border-radius: 10px; }

  .nav-search {
    order: 3; width: 100%;
    padding: 8px 12px;
  }
  .nav-search input { width: 100%; flex: 1; }

  /* 搜索框放到第二行 */
  .nav-inner { flex-wrap: wrap; height: auto; padding: 12px 0; }
  .nav-search { margin-top: 4px; }

  .hero { padding: 40px 0 24px; }
  .hero h1 { letter-spacing: 4px; }
  .hero p.lead { font-size: 15px; line-height: 1.8; }

  .section { padding: 20px 0 36px; }
  .section-head { flex-direction: column; align-items: flex-start; gap: 14px; }
  .section-title { font-size: 22px; letter-spacing: 3px; }
  .chips { width: 100%; overflow-x: auto; flex-wrap: nowrap; padding-bottom: 4px; scrollbar-width: none; }
  .chips::-webkit-scrollbar { display: none; }
  .chip { white-space: nowrap; flex: none; }

  .grid { grid-template-columns: repeat(auto-fill, minmax(140px, 1fr)); gap: 14px; }
  .card h3 { font-size: 14px; letter-spacing: 1px; }
  .card .meta { padding: 10px 12px 12px; }
  .card .badge { font-size: 10px; padding: 3px 6px; }

  /* 播放页 */
  .detail h1 { font-size: 24px; letter-spacing: 2px; }
  .detail-grid { gap: 24px; margin-top: 18px; }

  /* 后台 */
  .admin-layout { grid-template-columns: 1fr; }
  .admin-side {
    position: sticky; top: 0; z-index: 40;
    border-right: 0; border-bottom: 1px solid var(--line);
    padding: 12px 16px;
    display: flex; align-items: center; justify-content: space-between; gap: 12px;
    background: rgba(245, 241, 230, .95);
    backdrop-filter: blur(8px);
  }
  .admin-side .brand { margin-bottom: 0; font-size: 16px; }
  .admin-nav { display: flex; gap: 4px; }
  .admin-nav a { padding: 8px 10px; font-size: 13px; letter-spacing: 1px; margin-bottom: 0; }
  .admin-main { padding: 20px 16px; }

  /* 表格横向滚动 */
  #tableWrap { overflow-x: auto; -webkit-overflow-scrolling: touch; }
  .table { min-width: 720px; }

  /* 弹窗 */
  .modal { padding: 22px 20px; border-radius: 12px; }
  .modal h2 { font-size: 18px; letter-spacing: 3px; }
  .form-grid { grid-template-columns: 1fr; gap: 12px; }

  footer { margin-top: 50px; padding: 30px 16px; }
}

/* 小屏 */
@media (max-width: 420px) {
  .hero h1 { letter-spacing: 3px; }
  .grid { grid-template-columns: repeat(2, 1fr); gap: 12px; }
  .btn { padding: 10px 16px; letter-spacing: 1px; }
}