/* cases.css —— H3 案例库（独立暗色主题，不影响站点其余浅色页面） */
:root {
  --bg: #0d1014;
  --panel: #151920;
  --panel2: #1c222c;
  --line: #262d38;
  --line2: #333c4a;
  --text: #eef2f7;
  --muted: #98a3b2;
  --dim: #6d798a;
  --accent: #6cb6ff;
  --accent-dim: #2c4a6b;
  --p0: #ff7a7a;
  --p1: #ffd166;
  --p2: #97a3b4;
  --ok: #7ddba1;
}

* { box-sizing: border-box; }

html, body { height: 100%; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 15px/1.55 -apple-system, BlinkMacSystemFont, "Segoe UI", "Microsoft YaHei", Arial, sans-serif;
  -webkit-font-smoothing: antialiased;
}

a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

code, pre { font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, "Liberation Mono", monospace; }

/* ===== 顶栏 ===== */
.topbar { border-bottom: 1px solid var(--line); background: #0a0d11; }
.topbar-inner {
  max-width: 1600px; margin: 0 auto; padding: 12px 20px;
  display: flex; align-items: center; justify-content: space-between; gap: 16px;
}
.brand { font-weight: 700; letter-spacing: .04em; color: var(--text); }
.brand:hover { text-decoration: none; }
.nav { display: flex; gap: 6px; }
.nav-link {
  padding: 6px 12px; border-radius: 999px; color: var(--muted); font-size: 14px;
}
.nav-link:hover { background: var(--panel2); text-decoration: none; color: var(--text); }
.nav-link.active { background: var(--accent-dim); color: #fff; }

/* ===== Hero ===== */
.hero {
  max-width: 1600px; margin: 0 auto; padding: 26px 20px 16px;
}
.hero h1 { margin: 0 0 6px; font-size: 30px; letter-spacing: -.01em; }
.hero-sub { margin: 0 0 16px; color: var(--muted); font-size: 14px; }
.hero-sub b { color: var(--text); }
.hero-actions { display: flex; gap: 10px; align-items: center; }
#q {
  flex: 1; max-width: 620px; padding: 11px 14px; border-radius: 10px;
  border: 1px solid var(--line2); background: #0b0e13; color: var(--text); font-size: 15px;
}
#q:focus { outline: none; border-color: var(--accent); box-shadow: 0 0 0 3px rgba(108,182,255,.15); }
.hero-note {
  margin: 12px 0 0; color: var(--dim); font-size: 12.5px; max-width: 980px;
}
.hero-note b { color: var(--muted); }

/* ===== 主体两栏 ===== */
.app {
  max-width: 1600px; margin: 0 auto; padding: 0 20px 40px;
  display: grid; grid-template-columns: minmax(340px, 33%) 1fr; gap: 18px;
  align-items: start;
}

/* ===== 左栏 ===== */
.sidebar {
  background: var(--panel); border: 1px solid var(--line); border-radius: 14px;
  overflow: hidden; position: sticky; top: 14px; max-height: calc(100vh - 28px);
  display: flex; flex-direction: column;
}

.filters {
  flex: 0 0 auto;
  padding: 12px 12px 6px; border-bottom: 1px solid var(--line);
  max-height: min(40vh, 400px); overflow-y: auto;
}
.filters-head { display: flex; align-items: center; justify-content: space-between; margin-bottom: 8px; }
.filters-title { font-size: 13px; color: var(--muted); letter-spacing: .05em; text-transform: uppercase; }
.filters.collapsed #facet-blocks { display: none; }

.facet { margin-bottom: 8px; }
.facet-head {
  display: flex; align-items: center; gap: 6px; width: 100%;
  background: none; border: 0; color: var(--muted); font-size: 13px;
  padding: 5px 2px; cursor: pointer; text-align: left;
}
.facet-head:hover { color: var(--text); }
.facet-head .caret { font-size: 10px; transition: transform .12s ease; }
.facet.open .caret { transform: rotate(90deg); }
.facet-chips { display: none; flex-wrap: wrap; gap: 5px; padding: 2px 0 6px; }
.facet.open .facet-chips { display: flex; }

.chip {
  border: 1px solid var(--line2); background: #12171f; color: var(--muted);
  border-radius: 999px; padding: 3px 9px; font-size: 12px; cursor: pointer;
  white-space: nowrap;
}
.chip:hover { border-color: var(--accent); color: var(--text); }
.chip.on { background: var(--accent-dim); border-color: var(--accent); color: #fff; }
.chip .n { color: var(--dim); margin-left: 4px; font-size: 11px; }
.chip.on .n { color: #cfe6ff; }

.active-bar { display: flex; flex-wrap: wrap; gap: 6px; padding: 4px 0 8px; }
.active-bar:empty { display: none; }
.active-filter {
  display: inline-flex; align-items: center; gap: 5px;
  background: #1b2534; border: 1px solid var(--line2); border-radius: 999px;
  padding: 2px 8px; font-size: 12px; color: var(--text);
}
.active-filter button { background: none; border: 0; color: var(--dim); cursor: pointer; font-size: 13px; line-height: 1; }
.active-filter button:hover { color: var(--p0); }

.list-head {
  flex: 0 0 auto;
  display: flex; align-items: center; justify-content: space-between; gap: 8px;
  padding: 9px 12px; border-bottom: 1px solid var(--line);
  font-size: 12.5px; color: var(--muted); background: #12161d;
}
.list-head-right { display: flex; align-items: center; gap: 6px; }
.list-head select {
  background: #0b0e13; color: var(--text); border: 1px solid var(--line2);
  border-radius: 7px; padding: 3px 6px; font-size: 12px;
}

.list {
  list-style: none; margin: 0; padding: 8px;
  overflow-y: auto; flex: 1 1 auto; min-height: 34vh;
}
.item {
  border: 1px solid var(--line); background: var(--panel2); border-radius: 10px;
  padding: 9px 10px; margin-bottom: 7px; cursor: pointer;
}
.item:hover { border-color: var(--line2); background: #222937; }
.item.active { border-color: var(--accent); background: #22314a; }
.item-top { display: flex; align-items: center; gap: 6px; margin-bottom: 5px; }
.item-title { font-weight: 600; font-size: 14px; line-height: 1.35; }
.item-meta { color: var(--muted); font-size: 12px; margin-top: 4px; word-break: break-word; }
.item-meta .sep { color: var(--dim); margin: 0 5px; }
.item-tags { margin-top: 5px; display: flex; flex-wrap: wrap; gap: 4px; }
.tagmini {
  font-size: 11px; color: var(--muted); background: #101620;
  border: 1px solid var(--line); border-radius: 5px; padding: 1px 5px;
}

.badge {
  display: inline-block; border-radius: 5px; padding: 1px 6px;
  font-size: 11px; font-weight: 700; color: #10131a;
}
.badge.p0 { background: var(--p0); }
.badge.p1 { background: var(--p1); }
.badge.p2 { background: var(--p2); }

.list-more { padding: 6px 8px 10px; text-align: center; }
.empty-list { padding: 24px 12px; color: var(--dim); text-align: center; font-size: 13.5px; }

/* ===== 右栏 ===== */
.player { display: flex; flex-direction: column; gap: 14px; min-width: 0; }

.stage {
  background: #05070a; border: 1px solid var(--line); border-radius: 14px;
  overflow: hidden;
}
.video-wrap { position: relative; }
video { display: block; width: 100%; max-height: 62vh; background: #000; }

.empty { padding: 56px 24px; text-align: center; }
.empty-title { margin: 0 0 6px; font-size: 17px; }
.empty-sub { margin: 0 auto; color: var(--muted); font-size: 13.5px; max-width: 460px; }

.video-err {
  padding: 14px 16px; background: #2a1418; border-top: 1px solid #4a2228;
  font-size: 13px; color: #ffc9c9;
}
.video-err p { margin: 0 0 6px; }
.video-err p:last-child { margin-bottom: 0; }

.details {
  background: var(--panel); border: 1px solid var(--line); border-radius: 14px;
  padding: 16px 16px 18px;
}
.details h2 { margin: 0 0 4px; font-size: 19px; line-height: 1.35; word-break: break-word; }
.d-sub { margin: 0 0 12px; color: var(--muted); font-size: 13px; word-break: break-word; }

.d-tags { display: flex; flex-wrap: wrap; gap: 5px; margin-bottom: 12px; }
.d-tags .tagmini { font-size: 11.5px; padding: 2px 7px; }
.d-tags .tagmini.ct { border-color: #2f4a6a; color: #bcdcff; }
.d-tags .tagmini.tt { border-color: #33453a; color: #bfe6cb; }
.d-tags .tagmini.st { border-color: #453a55; color: #dcc8f5; }

.d-meta {
  display: grid; grid-template-columns: repeat(auto-fill, minmax(190px, 1fr));
  gap: 7px 14px; margin: 0 0 14px; padding: 12px 0 0; border-top: 1px solid var(--line);
}
.d-meta div { min-width: 0; }
.d-meta dt { color: var(--dim); font-size: 11.5px; margin-bottom: 1px; }
.d-meta dd { margin: 0; font-size: 13px; word-break: break-word; }

.actions { display: flex; flex-wrap: wrap; gap: 8px; }

.btn {
  display: inline-flex; align-items: center; justify-content: center;
  border: 1px solid var(--line2); background: #1d2431; color: var(--text);
  border-radius: 9px; padding: 8px 13px; font-size: 13.5px; cursor: pointer;
  line-height: 1.2;
}
.btn:hover { border-color: var(--accent); text-decoration: none; }
.btn.primary { background: var(--accent-dim); border-color: var(--accent); color: #fff; }
.btn.primary:hover { background: #35577e; }
.btn.ghost { background: transparent; }
.btn.tiny { padding: 3px 8px; font-size: 11.5px; border-radius: 7px; }
.btn[disabled] { opacity: .5; cursor: default; }

.toast { margin: 8px 0 0; font-size: 12.5px; color: var(--ok); min-height: 16px; }

.prompt-box { margin-top: 14px; border-top: 1px solid var(--line); padding-top: 12px; }
.ad-slot { margin-bottom: 10px; }
.prompt-head {
  display: flex; align-items: center; justify-content: space-between;
  font-size: 12px; color: var(--dim); margin-bottom: 6px;
}
.prompt-prov { color: var(--muted); }
.prompt-text {
  margin: 0; padding: 13px 14px; background: #0a0e14; border: 1px solid var(--line);
  border-radius: 10px; font-size: 13px; line-height: 1.62; color: #dbe4ef;
  white-space: pre-wrap; word-break: break-word; max-height: 46vh; overflow: auto;
}

.cta {
  display: flex; align-items: center; justify-content: space-between; gap: 14px;
  background: linear-gradient(120deg, #16202e, #131a24);
  border: 1px solid var(--line2); border-radius: 14px; padding: 15px 17px;
}
.cta-title { margin: 0 0 2px; font-weight: 600; }
.cta-sub { margin: 0; color: var(--muted); font-size: 13px; }

.footer { color: var(--dim); font-size: 12px; line-height: 1.7; }
.footer p { margin: 0 0 5px; }

/* ===== 响应式 ===== */
@media (max-width: 1000px) {
  .app { grid-template-columns: 1fr; }
  .sidebar { position: static; max-height: none; }
  .list { max-height: 46vh; }
  .hero h1 { font-size: 24px; }
  .hero-actions { flex-wrap: wrap; }
  #q { max-width: none; }
  video { max-height: 46vh; }
  .player.mobile-picking .details, .player.mobile-picking .cta { display: none; }
}