/* ============================================================
   PPT 智能创作平台 · Quiet Luxury + Notebook Architecture
   ============================================================ */

/* ============ 设计令牌 ============ */
:root {
  --void: #0A0A0C;
  --obsidian: #111114;
  --slate: #16161A;
  --slate-2: #1C1C21;
  --slate-3: #22222A;
  --edge: #25252C;
  --edge-2: #2F2F37;
  --edge-3: #3A3A44;

  --ivory: #EDEDEE;
  --chalk: #C9C9CE;
  --ash: #8A8A93;
  --smoke: #5A5A62;

  --champagne: #C4A661;
  --champagne-soft: #8A7440;
  --champagne-glow: rgba(196,166,97,.15);
  --ember: #D4604A;
  --sage: #7BA089;

  --serif: "Instrument Serif", "Noto Serif SC", Georgia, serif;
  --serif-cn: "Noto Serif SC", "Songti SC", serif;
  --sans: "Inter", "Noto Sans SC", -apple-system, sans-serif;
  --mono: "JetBrains Mono", "SF Mono", Menlo, monospace;

  --max: 1200px;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html, body { height: 100%; }
body {
  font-family: var(--sans);
  background: var(--void);
  color: var(--ivory);
  font-size: 14px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  font-feature-settings: "ss01", "cv11";
  background-image:
    radial-gradient(ellipse 1400px 700px at 50% -10%, rgba(196,166,97,.05), transparent 60%),
    radial-gradient(ellipse 800px 400px at 100% 100%, rgba(212,96,74,.02), transparent 60%);
}

/* 视图切换 */
.view { display: none; min-height: 100vh; }
.view.is-active { display: block; }

/* ============ 通用顶栏 ============ */
.topbar {
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  padding: 18px 36px;
  background: rgba(10,10,12,.85);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--edge);
  position: sticky;
  top: 0;
  z-index: 50;
  gap: 24px;
}
.topbar-left { display: flex; align-items: center; gap: 18px; }

.back-lib {
  display: none;
  font-family: var(--mono);
  font-size: 11px;
  color: var(--ash);
  background: none;
  border: 1px solid var(--edge-2);
  padding: 7px 14px;
  border-radius: 4px;
  cursor: pointer;
  letter-spacing: 0.06em;
  transition: all .2s;
  align-items: center;
  gap: 8px;
}
.view-project .back-lib { display: inline-flex; }
.back-lib:hover { color: var(--champagne); border-color: var(--champagne); background: var(--champagne-glow); }
.back-lib .arrow { font-family: var(--serif); font-size: 14px; }

.brand { display: flex; align-items: baseline; gap: 12px; cursor: pointer; }
.brand-mark {
  font-family: var(--serif);
  font-size: 26px;
  font-weight: 400;
  letter-spacing: -0.02em;
  color: var(--ivory);
}
.brand-mark .dot { color: var(--champagne); margin: 0 2px; }
.brand-tag {
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--ash);
  padding-left: 12px;
  border-left: 1px solid var(--edge);
}

.search-box {
  display: flex;
  align-items: center;
  gap: 10px;
  background: var(--slate);
  border: 1px solid var(--edge-2);
  border-radius: 6px;
  padding: 8px 14px;
  max-width: 360px;
  margin: 0 auto;
  transition: border-color .2s;
}
.search-box:focus-within { border-color: var(--champagne); }
.search-box .icon { color: var(--smoke); font-family: var(--serif); font-size: 14px; }
.search-box input {
  flex: 1; background: none; border: none; color: var(--ivory);
  font-family: var(--sans); font-size: 13px; outline: none;
}
.search-box input::placeholder { color: var(--smoke); }
.search-box .kbd {
  font-family: var(--mono); font-size: 10px; color: var(--smoke);
  border: 1px solid var(--edge-2); padding: 2px 6px; border-radius: 3px;
}

.proj-crumb {
  display: none;
  align-items: center;
  gap: 12px;
  font-family: var(--serif);
  font-size: 17px;
  color: var(--ivory);
}
.view-project .proj-crumb { display: flex; }
.proj-crumb .sep { color: var(--smoke); font-family: var(--mono); font-size: 12px; }
.proj-crumb .name { letter-spacing: -0.01em; max-width: 420px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.proj-crumb .meta {
  font-family: var(--mono); font-size: 10px; color: var(--ash);
  letter-spacing: 0.1em; padding: 3px 8px;
  border: 1px solid var(--edge-2); border-radius: 3px;
}
.proj-crumb .meta.done { color: var(--sage); border-color: rgba(123,160,137,.3); }
.proj-crumb .meta.in-progress { color: var(--champagne); border-color: rgba(196,166,97,.3); }

.top-actions { display: flex; gap: 12px; align-items: center; }
.new-deck {
  font-family: var(--sans); font-size: 12px; font-weight: 500;
  color: var(--void); background: var(--ivory);
  padding: 9px 18px; border-radius: 4px;
  letter-spacing: 0.02em; transition: all .2s;
  border: none; cursor: pointer;
}
.new-deck:hover { background: var(--champagne); transform: translateY(-1px); }
.icon-btn {
  font-family: var(--mono); font-size: 11px; color: var(--ash);
  background: none; border: 1px solid var(--edge-2);
  padding: 8px 12px; border-radius: 4px;
  cursor: pointer; transition: all .2s;
}
.icon-btn:hover { color: var(--ivory); border-color: var(--edge-3); background: var(--slate); }

/* ============ 库首页主体 ============ */
.library { max-width: var(--max); margin: 0 auto; padding: 56px 36px 120px; }

.lib-head {
  display: flex; align-items: flex-end; justify-content: space-between;
  margin-bottom: 48px; padding-bottom: 24px;
  border-bottom: 1px solid var(--edge);
}
.lib-head-left .eyebrow {
  font-family: var(--mono); font-size: 10px;
  letter-spacing: 0.22em; text-transform: uppercase;
  color: var(--champagne); margin-bottom: 14px;
}
.lib-head-left h1 {
  font-family: var(--serif); font-weight: 400;
  font-size: 48px; line-height: 1.05;
  letter-spacing: -0.025em; color: var(--ivory); margin-bottom: 8px;
}
.lib-head-left h1 em { font-style: italic; color: var(--champagne); }
.lib-head-left .sub {
  font-family: var(--serif-cn); font-size: 15px;
  color: var(--ash); font-weight: 300; letter-spacing: 0.02em;
}
.lib-head-right { display: flex; gap: 8px; align-items: center; }
.filter-pill {
  font-family: var(--mono); font-size: 10px; color: var(--ash);
  background: var(--slate); border: 1px solid var(--edge-2);
  padding: 7px 12px; border-radius: 20px;
  cursor: pointer; letter-spacing: 0.08em; transition: all .2s;
}
.filter-pill:hover { color: var(--ivory); border-color: var(--edge-3); }
.filter-pill.is-active {
  color: var(--champagne); border-color: var(--champagne);
  background: var(--champagne-glow);
}
.filter-pill .count { margin-left: 6px; color: var(--smoke); }
.filter-pill.is-active .count { color: var(--champagne-soft); }

/* 项目网格 */
.deck-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
@media (max-width: 960px) { .deck-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 640px) { .deck-grid { grid-template-columns: 1fr; } }

.deck-card {
  background: var(--slate); border: 1px solid var(--edge);
  border-radius: 8px; overflow: hidden; cursor: pointer;
  transition: all .3s; display: flex; flex-direction: column; position: relative;
}
.deck-card:hover {
  border-color: var(--champagne); transform: translateY(-3px);
  box-shadow: 0 16px 48px rgba(0,0,0,.4), 0 0 0 1px var(--champagne-glow);
}
.deck-card:hover .thumb-canvas-mini .slide-title { color: var(--champagne-soft); }

/* 卡片缩略图：模拟一张幻灯片 */
.thumb-wrap {
  aspect-ratio: 16/10;
  background: linear-gradient(135deg, #FAFAFA 0%, #F2F0EA 100%);
  position: relative; overflow: hidden;
  padding: 18px 22px; color: #0A0A0C;
}
.thumb-wrap .slide-eyebrow {
  font-family: var(--mono); font-size: 7px;
  letter-spacing: 0.18em; text-transform: uppercase;
  color: var(--champagne-soft); margin-bottom: 6px;
}
.thumb-wrap .slide-title {
  font-family: var(--serif); font-size: 13px; font-weight: 400;
  line-height: 1.2; color: #0A0A0C;
  letter-spacing: -0.01em; transition: color .3s; max-width: 90%;
}
.thumb-wrap .slide-title em { font-style: italic; color: var(--champagne-soft); }
.thumb-wrap .slide-kpi {
  font-family: var(--serif); font-size: 28px; font-weight: 400;
  color: #0A0A0C; line-height: 1; letter-spacing: -0.03em; margin-top: 10px;
}
.thumb-wrap .slide-kpi-label {
  font-family: var(--mono); font-size: 6px;
  letter-spacing: 0.15em; color: #5A5A62; margin-top: 3px;
}
.thumb-wrap .slide-source {
  position: absolute; bottom: 12px; left: 22px; right: 22px;
  padding-top: 6px; border-top: 1px solid #D8D4C8;
  font-family: var(--mono); font-size: 6px; color: #8A8A93;
  letter-spacing: 0.1em; display: flex; justify-content: space-between;
}
.thumb-wrap .corner-mark {
  position: absolute; bottom: 12px; right: 22px;
  font-family: var(--serif); font-style: italic;
  font-size: 8px; color: var(--champagne-soft);
}
.thumb-wrap.empty-thumb {
  background: linear-gradient(135deg, #1C1C21 0%, #16161A 100%);
  color: var(--smoke);
  display: flex; flex-direction: column; align-items: center; justify-content: center;
}
.thumb-wrap.empty-thumb .placeholder-mark {
  font-family: var(--serif); font-size: 32px; color: var(--edge-3); font-style: italic;
}
.thumb-wrap.empty-thumb .placeholder-text {
  font-family: var(--mono); font-size: 8px; color: var(--smoke);
  letter-spacing: 0.2em; margin-top: 8px;
}

/* 卡片状态角标 */
.card-badge {
  position: absolute; top: 12px; right: 12px;
  font-family: var(--mono); font-size: 9px;
  padding: 3px 8px; border-radius: 3px;
  letter-spacing: 0.08em; z-index: 2;
}
.card-badge.draft { color: var(--ash); background: rgba(26,26,31,.8); border: 1px solid var(--edge-2); backdrop-filter: blur(8px); }
.card-badge.in-progress { color: var(--champagne); background: rgba(196,166,97,.15); border: 1px solid rgba(196,166,97,.3); backdrop-filter: blur(8px); }
.card-badge.done { color: var(--sage); background: rgba(123,160,137,.12); border: 1px solid rgba(123,160,137,.3); backdrop-filter: blur(8px); }

/* 卡片信息区 */
.card-body { padding: 18px 20px 20px; flex: 1; display: flex; flex-direction: column; }
.card-title {
  font-family: var(--serif-cn); font-size: 15px; font-weight: 500;
  color: var(--ivory); line-height: 1.4; margin-bottom: 8px; letter-spacing: 0.01em;
}
.card-desc {
  font-family: var(--sans); font-size: 12px; color: var(--ash);
  line-height: 1.5; margin-bottom: 14px;
  display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical;
  overflow: hidden; font-weight: 300;
}
.card-progress { margin-bottom: 14px; }
.progress-bar { height: 2px; background: var(--edge-2); border-radius: 1px; overflow: hidden; margin-bottom: 6px; }
.progress-fill { height: 100%; background: var(--champagne); box-shadow: 0 0 8px var(--champagne-glow); transition: width .4s; }
.progress-fill.done { background: var(--sage); box-shadow: 0 0 8px rgba(123,160,137,.3); }
.progress-meta {
  display: flex; justify-content: space-between;
  font-family: var(--mono); font-size: 9px;
  color: var(--smoke); letter-spacing: 0.08em;
}
.progress-meta .step { color: var(--champagne); }
.progress-meta .step.done { color: var(--sage); }
.card-foot {
  display: flex; justify-content: space-between; align-items: center;
  margin-top: auto; padding-top: 12px; border-top: 1px solid var(--edge);
  font-family: var(--mono); font-size: 10px; color: var(--smoke); letter-spacing: 0.06em;
}
.card-foot .updated { color: var(--ash); }

/* 新建卡片 */
.new-card {
  border: 1px dashed var(--edge-2); background: transparent;
  border-radius: 8px; min-height: 100%;
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  cursor: pointer; transition: all .3s; padding: 60px 20px;
}
.new-card:hover { border-color: var(--champagne); background: var(--champagne-glow); }
.new-card .plus {
  font-family: var(--serif); font-size: 48px; color: var(--champagne);
  line-height: 1; margin-bottom: 14px; font-weight: 300;
}
.new-card .label {
  font-family: var(--serif-cn); font-size: 14px; color: var(--chalk);
  margin-bottom: 4px; letter-spacing: 0.04em;
}
.new-card .hint {
  font-family: var(--mono); font-size: 10px; color: var(--smoke); letter-spacing: 0.1em;
}

/* 库空状态 */
.lib-empty {
  grid-column: 1 / -1;
  text-align: center; padding: 80px 20px;
  font-family: var(--serif-cn); color: var(--ash);
}
.lib-empty .mark { font-family: var(--serif); font-size: 56px; color: var(--edge-3); font-style: italic; margin-bottom: 20px; }
.lib-empty h2 { font-family: var(--serif); font-size: 28px; color: var(--ivory); font-weight: 400; margin-bottom: 10px; }
.lib-empty p { font-size: 14px; color: var(--ash); }

/* ============ 项目内工作区 ============ */
.project-layout {
  display: grid; grid-template-columns: 240px 1fr;
  min-height: calc(100vh - 65px);
}

/* 步骤导航 */
.stepper {
  padding: 32px 0; position: sticky; top: 65px;
  height: calc(100vh - 65px); overflow-y: auto;
  border-right: 1px solid var(--edge); background: rgba(17,17,20,.5);
}
.stepper-head {
  padding: 0 28px 20px; font-family: var(--mono); font-size: 10px;
  letter-spacing: 0.2em; text-transform: uppercase; color: var(--smoke);
  border-bottom: 1px solid var(--edge); margin-bottom: 14px;
  display: flex; align-items: center; justify-content: space-between;
}
.stepper-head .count { color: var(--champagne); font-weight: 500; }

.step {
  display: grid; grid-template-columns: 40px 1fr;
  padding: 11px 28px; cursor: pointer; position: relative;
  transition: background .2s;
}
.step:hover { background: var(--slate); }
.step.is-active { background: var(--slate); }
.step.is-active::before {
  content: ""; position: absolute; left: 0; top: 11px; bottom: 11px;
  width: 2px; background: var(--champagne); box-shadow: 0 0 12px var(--champagne-glow);
}
.step-no { font-family: var(--mono); font-size: 12px; color: var(--smoke); line-height: 1.4; }
.step.is-active .step-no { color: var(--champagne); }
.step.is-done .step-no { color: var(--sage); }
.step.is-done .step-no::after { content: " ✓"; }
.step-body { padding-top: 0; }
.step-title { font-family: var(--sans); font-size: 13px; font-weight: 400; color: var(--chalk); }
.step.is-active .step-title { color: var(--ivory); font-weight: 500; }
.step-sub { font-family: var(--mono); font-size: 10px; color: var(--smoke); margin-top: 2px; letter-spacing: 0.08em; }

/* 工作区 */
.workspace { padding: 56px 72px 120px; max-width: 1080px; }
@media (max-width: 900px) { .workspace { padding: 40px 32px 80px; } }

/* ============ 面板（步骤主区） ============ */
.panel { max-width: 920px; }
.panel-eyebrow {
  display: flex; align-items: center; gap: 16px; margin-bottom: 22px;
}
.panel-eyebrow .num { font-family: var(--mono); font-size: 11px; color: var(--champagne); letter-spacing: 0.1em; }
.panel-eyebrow .label {
  font-family: var(--sans); font-size: 10px;
  letter-spacing: 0.22em; text-transform: uppercase; color: var(--ash);
}
.panel-eyebrow .rule { flex: 1; height: 1px; background: linear-gradient(to right, var(--edge-2), transparent); }
.panel-title {
  font-family: var(--serif); font-weight: 400;
  font-size: 52px; line-height: 1.05; letter-spacing: -0.025em;
  color: var(--ivory); margin-bottom: 16px;
}
.panel-title em { font-style: italic; color: var(--champagne); font-weight: 400; }
.panel-desc, .panel-lede {
  font-family: var(--serif-cn); font-size: 16px; line-height: 1.7;
  color: var(--chalk); max-width: 620px; margin-bottom: 48px; font-weight: 300;
}

/* ============ 卡片 ============ */
.card {
  background: var(--slate); border: 1px solid var(--edge);
  border-radius: 8px; padding: 28px 32px; margin-bottom: 20px;
}
.card h3 {
  font-family: var(--serif-cn); font-size: 16px; font-weight: 500;
  color: var(--ivory); margin-bottom: 18px; letter-spacing: 0.01em;
  display: flex; align-items: center; gap: 10px;
}
.card h3 .num-tag {
  font-family: var(--mono); font-size: 10px; color: var(--champagne);
  letter-spacing: 0.1em; font-weight: 400;
}

/* ============ 表单 ============ */
.field { margin-bottom: 18px; }
.field label {
  display: block; font-family: var(--sans); font-size: 12px;
  font-weight: 500; margin-bottom: 8px; color: var(--chalk);
  letter-spacing: 0.02em;
}
.field .hint { font-weight: 300; color: var(--smoke); font-size: 11px; margin-left: 6px; }
input[type="text"], textarea, select {
  width: 100%; padding: 12px 14px;
  border: 1px solid var(--edge-2); border-radius: 4px;
  font-family: var(--sans); font-size: 14px;
  background: var(--obsidian); color: var(--ivory);
  transition: border-color .2s, background .2s;
}
input[type="text"]::placeholder, textarea::placeholder { color: var(--smoke); }
input[type="text"]:focus, textarea:focus, select:focus {
  outline: none; border-color: var(--champagne);
  background: var(--slate-3);
}
textarea { min-height: 96px; resize: vertical; line-height: 1.6; font-family: var(--sans); }
input[type="file"] {
  font-family: var(--mono); font-size: 12px; color: var(--ash);
  padding: 10px; border: 1px dashed var(--edge-2); border-radius: 4px;
  background: var(--obsidian); width: 100%; cursor: pointer;
}

/* ============ 按钮 ============ */
.btn {
  padding: 11px 22px; border-radius: 4px;
  border: 1px solid var(--edge-2); background: var(--slate);
  color: var(--chalk); font-size: 13px; cursor: pointer;
  font-family: var(--sans); transition: all .2s;
  letter-spacing: 0.02em; font-weight: 400;
}
.btn:hover { border-color: var(--edge-3); color: var(--ivory); background: var(--slate-2); }
.btn-primary {
  background: var(--ivory); color: var(--void); border-color: var(--ivory);
  font-weight: 500;
}
.btn-primary:hover { background: var(--champagne); border-color: var(--champagne); color: var(--void); transform: translateY(-1px); box-shadow: 0 8px 24px var(--champagne-glow); }
.btn-accent {
  background: transparent; color: var(--champagne);
  border: 1px solid var(--champagne);
}
.btn-accent:hover { background: var(--champagne-glow); color: var(--champagne); }
.btn-ghost {
  background: transparent; border-color: transparent; color: var(--ash);
}
.btn-ghost:hover { color: var(--ivory); background: var(--slate); }
.btn-sm { padding: 6px 12px; font-size: 11px; }
.btn:disabled { opacity: .4; cursor: not-allowed; }
.btn-row { display: flex; gap: 12px; margin-top: 20px; flex-wrap: wrap; align-items: center; }

/* ============ 标签 ============ */
.tag {
  display: inline-block; padding: 2px 8px; border-radius: 3px;
  font-size: 10px; font-weight: 500; margin-left: 8px;
  font-family: var(--mono); letter-spacing: 0.08em;
  vertical-align: middle;
}
.tag-user { background: rgba(123,160,137,.15); color: var(--sage); border: 1px solid rgba(123,160,137,.3); }
.tag-ai { background: rgba(196,166,97,.12); color: var(--champagne); border: 1px solid rgba(196,166,97,.3); }
.tag-pending { background: rgba(212,96,74,.12); color: var(--ember); border: 1px solid rgba(212,96,74,.3); }
.tag-sample { background: rgba(138,138,147,.12); color: var(--ash); border: 1px solid var(--edge-2); }

/* ============ 素材列表 ============ */
.item-row {
  display: flex; align-items: flex-start; gap: 12px;
  padding: 14px 16px; border: 1px solid var(--edge);
  border-radius: 6px; margin-bottom: 8px;
  background: var(--obsidian); transition: border-color .2s;
}
.item-row:hover { border-color: var(--edge-3); }
.item-row .grow { flex: 1; min-width: 0; }
.item-row .grow strong { display: block; font-family: var(--sans); font-size: 13px; color: var(--ivory); font-weight: 500; margin-bottom: 4px; }
.item-row .grow div { font-size: 12px; color: var(--ash); line-height: 1.5; }
.material-badge {
  font-family: var(--mono); font-size: 10px;
  background: var(--slate-2); color: var(--champagne);
  padding: 3px 8px; border-radius: 3px;
  border: 1px solid var(--edge-2); letter-spacing: 0.08em;
  flex-shrink: 0;
}

/* ============ 框架金字塔 ============ */
.pyramid {
  background: var(--slate); border: 1px solid var(--edge);
  border-radius: 8px; padding: 36px 40px; margin-bottom: 28px;
}
.pyramid-apex {
  text-align: center; padding-bottom: 24px;
  border-bottom: 1px solid var(--edge); margin-bottom: 24px;
}
.pyramid-apex .label {
  font-family: var(--mono); font-size: 10px;
  letter-spacing: 0.18em; text-transform: uppercase;
  color: var(--champagne); margin-bottom: 10px;
}
.pyramid-apex .text {
  font-family: var(--serif); font-size: 22px; font-weight: 400;
  color: var(--ivory); line-height: 1.3; letter-spacing: -0.01em;
}
.pyramid-apex .text em { font-style: italic; color: var(--champagne); }
.pillars { display: grid; grid-template-columns: repeat(3, 1fr); gap: 0; }
@media (max-width: 720px) { .pillars { grid-template-columns: 1fr; gap: 20px; } .pillar { border-right: none !important; border-bottom: 1px solid var(--edge); padding-bottom: 20px; } .pillar:last-child { border-bottom: none; } }
.pillar { padding: 0 20px; border-right: 1px solid var(--edge); }
.pillar:first-child { padding-left: 0; }
.pillar:last-child { padding-right: 0; border-right: none; }
.pillar-no { font-family: var(--mono); font-size: 11px; color: var(--champagne); margin-bottom: 6px; letter-spacing: 0.1em; }
.pillar-title { font-family: var(--serif-cn); font-size: 14px; font-weight: 500; color: var(--ivory); margin-bottom: 12px; line-height: 1.4; }
.pillar-points { list-style: none; font-family: var(--sans); font-size: 12px; color: var(--chalk); line-height: 1.8; }
.pillar-points li, .pillar-point { padding-left: 14px; position: relative; font-size: 12px; color: var(--chalk); line-height: 1.8; margin-bottom: 2px; }
.pillar-points li::before, .pillar-point::before { content: "—"; position: absolute; left: 0; color: var(--smoke); }
.logic-note {
  background: rgba(212,96,74,.06); border-left: 2px solid var(--ember);
  padding: 10px 14px; font-family: var(--sans); font-size: 12px;
  color: var(--chalk); margin-bottom: 8px; border-radius: 0 4px 4px 0;
  line-height: 1.6;
}

/* ============ 标题列表 ============ */
.title-list { margin-top: 8px; }
.title-row {
  display: grid; grid-template-columns: 56px 1fr 120px;
  align-items: center; padding: 18px 16px;
  background: var(--slate); border-radius: 6px;
  margin-bottom: 4px; gap: 20px;
  transition: all .2s; border: 1px solid transparent;
}
.title-row:hover { background: var(--slate-2); border-color: var(--edge-2); }
.title-row.is-active { background: var(--slate-2); border-color: var(--champagne); }
.title-no { font-family: var(--mono); font-size: 12px; color: var(--smoke); }
.title-row.is-active .title-no { color: var(--champagne); }
.title-text { font-family: var(--serif-cn); font-size: 15px; color: var(--ivory); line-height: 1.5; font-weight: 400; }
.title-text .source-tag {
  display: inline-block; margin-left: 10px;
  font-family: var(--mono); font-size: 9px; color: var(--smoke);
  padding: 2px 6px; border: 1px solid var(--edge-2); border-radius: 3px;
  letter-spacing: 0.08em; vertical-align: middle;
}
.title-text .source-tag.user { color: var(--sage); border-color: rgba(123,160,137,.3); }
.title-text .source-tag.pending { color: var(--ember); border-color: rgba(212,96,74,.3); }
.title-type { font-family: var(--mono); font-size: 10px; color: var(--ash); text-align: right; letter-spacing: 0.1em; }

/* 旧版 title-item 兼容 */
.title-item {
  display: grid; grid-template-columns: 36px 1fr 80px;
  align-items: center; padding: 14px 16px;
  background: var(--slate); border-radius: 6px;
  margin-bottom: 6px; gap: 16px;
  border: 1px solid var(--edge); transition: all .2s;
}
.title-item:hover { border-color: var(--edge-3); background: var(--slate-2); }
.title-item .pageno { font-family: var(--mono); font-size: 12px; color: var(--champagne); font-weight: 500; }
.title-item input {
  background: transparent; border: none; padding: 4px 0;
  font-family: var(--serif-cn); font-size: 14px; color: var(--ivory);
}
.title-item input:focus { outline: none; background: var(--obsidian); padding: 4px 8px; border-radius: 3px; }
.info-type {
  font-family: var(--mono); font-size: 10px; color: var(--ash);
  text-align: right; letter-spacing: 0.08em;
  padding: 3px 8px; background: var(--obsidian); border-radius: 3px;
  border: 1px solid var(--edge);
}

/* ============ 连读预览 ============ */
.readthrough {
  background: linear-gradient(135deg, var(--slate) 0%, var(--slate-2) 100%);
  border: 1px solid var(--edge); border-left: 2px solid var(--champagne);
  padding: 28px 36px; margin-top: 28px; border-radius: 0 8px 8px 0;
}
.readthrough-label {
  font-family: var(--mono); font-size: 10px;
  letter-spacing: 0.18em; text-transform: uppercase;
  color: var(--champagne); margin-bottom: 12px;
}
.readthrough-text {
  font-family: var(--serif-cn); font-size: 15px;
  line-height: 2; color: var(--chalk); font-weight: 300;
}
.readthrough-text .sep { color: var(--smoke); margin: 0 10px; font-family: var(--mono); }

/* ============ 布局选择 ============ */
.layout-grid {
  display: grid; grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
  gap: 10px; margin: 12px 0;
}
.layout-opt {
  border: 1px solid var(--edge); border-radius: 6px;
  padding: 14px; cursor: pointer; transition: all .15s;
  background: var(--obsidian);
}
.layout-opt:hover { border-color: var(--edge-3); background: var(--slate-3); }
.layout-opt.selected { border-color: var(--champagne); background: var(--champagne-glow); }
.layout-opt .lname { font-family: var(--sans); font-weight: 500; font-size: 13px; color: var(--ivory); margin-bottom: 4px; }
.layout-opt.selected .lname { color: var(--champagne); }
.layout-opt .lstruct { font-family: var(--mono); font-size: 10px; color: var(--smoke); line-height: 1.5; letter-spacing: 0.04em; }

/* ============ 主题选择 ============ */
.theme-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); gap: 14px; }
.theme-card {
  border: 1px solid var(--edge); border-radius: 6px;
  overflow: hidden; cursor: pointer; transition: all .2s;
  background: var(--obsidian);
}
.theme-card:hover { border-color: var(--edge-3); }
.theme-card.selected { border-color: var(--champagne); box-shadow: 0 4px 20px var(--champagne-glow); }
.theme-preview { height: 110px; padding: 18px; display: flex; flex-direction: column; justify-content: center; }
.theme-name { padding: 12px 14px 4px; font-weight: 500; font-size: 13px; color: var(--ivory); font-family: var(--sans); }
.theme-desc { font-size: 11px; color: var(--ash); padding: 0 14px 12px; font-family: var(--sans); line-height: 1.5; }

/* ============ 幻灯片预览/编辑 ============ */
.deck { display: flex; gap: 24px; margin-top: 16px; }
.slide-thumb-list {
  width: 180px; flex-shrink: 0; overflow-y: auto;
  max-height: 70vh; padding-right: 4px;
}
.slide-thumb {
  border: 1px solid var(--edge); border-radius: 4px;
  margin-bottom: 10px; cursor: pointer;
  overflow: hidden; background: var(--ivory);
  position: relative; transition: border-color .15s;
}
.slide-thumb:hover { border-color: var(--edge-3); }
.slide-thumb.active { border-color: var(--champagne); box-shadow: 0 0 0 1px var(--champagne-glow); }
.slide-thumb .thumb-canvas { height: 92px; padding: 10px; font-size: 8px; overflow: hidden; color: var(--void); background: #fff; }
.slide-thumb .thumb-title {
  font-family: var(--serif); font-weight: 600;
  font-size: 9px; margin-bottom: 4px; line-height: 1.2;
  color: var(--void);
}
.slide-thumb .thumb-no { position: absolute; top: 4px; right: 6px; font-size: 10px; color: var(--smoke); font-family: var(--mono); }
.slide-thumb .lock-badge { position: absolute; bottom: 4px; right: 6px; font-size: 12px; }
.slide-canvas-wrap { flex: 1; min-width: 0; }
.slide-canvas {
  background: #fff; border: 1px solid var(--edge);
  border-radius: 6px; aspect-ratio: 16/9;
  padding: 44px 56px; overflow-y: auto;
  box-shadow: 0 4px 20px rgba(0,0,0,.2);
  color: var(--void);
}
.block { margin-bottom: 18px; position: relative; }
.block:hover .block-tools { opacity: 1; }
.block-tools { position: absolute; top: -6px; right: 0; opacity: 0; transition: .15s; }
.block-heading { font-family: var(--serif); font-size: 30px; font-weight: 600; line-height: 1.2; }
.block-kpi { font-size: 48px; font-weight: 700; text-align: center; letter-spacing: -0.02em; }
.block-quote { font-size: 22px; font-style: italic; border-left: 4px solid; padding-left: 18px; font-family: var(--serif); line-height: 1.5; }
.block-bullets { padding-left: 0; list-style: none; }
.block-bullets li { font-size: 16px; margin-bottom: 8px; line-height: 1.6; padding-left: 20px; position: relative; }
.block-bullets li::before { content: "▪"; position: absolute; left: 0; }
.block-chart, .block-table, .block-matrix {
  border: 1px dashed var(--edge-3); border-radius: 4px;
  padding: 24px; text-align: center; font-size: 13px;
  background: rgba(0,0,0,.02);
}
.block-text { font-size: 15px; line-height: 1.7; }
.block[contenteditable="true"] { outline: 2px solid var(--champagne); border-radius: 2px; }

/* ============ AI 对话修改 ============ */
.ai-chat {
  border: 1px solid var(--edge); border-radius: 6px;
  background: var(--slate); margin-top: 20px;
}
.ai-chat-head {
  padding: 14px 20px; border-bottom: 1px solid var(--edge);
  font-family: var(--mono); font-size: 11px; color: var(--champagne);
  letter-spacing: 0.1em;
}
.ai-chat-body { padding: 18px 20px; }
.diff-box {
  display: grid; grid-template-columns: 1fr 1fr; gap: 14px;
  margin-top: 14px; padding: 14px; background: var(--obsidian);
  border-radius: 6px; border: 1px solid var(--edge);
}
.diff-col h5 {
  font-family: var(--mono); font-size: 10px; color: var(--ash);
  margin-bottom: 8px; letter-spacing: 0.1em; text-transform: uppercase;
}
.diff-col:nth-child(1) h5 { color: var(--ember); }
.diff-col:nth-child(2) h5 { color: var(--sage); }
.diff-col > div { font-size: 12px; color: var(--chalk); line-height: 1.6; }
.version-item {
  display: flex; justify-content: space-between; align-items: center;
  padding: 10px 14px; background: var(--obsidian);
  border-radius: 4px; margin-bottom: 6px;
  font-family: var(--mono); font-size: 12px; color: var(--chalk);
  border: 1px solid var(--edge);
}

/* ============ 导出 ============ */
.export-grid {
  display: grid; grid-template-columns: repeat(3, 1fr);
  gap: 14px; margin-top: 14px;
}
.export-card {
  border: 1px solid var(--edge); border-radius: 6px;
  padding: 24px 20px; cursor: pointer; text-align: center;
  transition: all .2s; background: var(--obsidian);
}
.export-card:hover { border-color: var(--champagne); background: var(--slate-2); transform: translateY(-2px); }
.export-card .icon { font-size: 32px; margin-bottom: 12px; }
.export-card .name { font-family: var(--serif-cn); font-size: 15px; font-weight: 500; color: var(--ivory); margin-bottom: 6px; }
.export-card .desc { font-size: 11px; color: var(--ash); font-family: var(--sans); }

/* ============ 横幅 ============ */
.ok-banner {
  background: rgba(123,160,137,.08); border-left: 3px solid var(--sage);
  padding: 14px 18px; border-radius: 0 4px 4px 0;
  font-family: var(--sans); font-size: 13px; color: var(--sage);
  margin-bottom: 14px;
}
.warn-banner {
  background: rgba(212,96,74,.08); border-left: 3px solid var(--ember);
  padding: 14px 18px; border-radius: 0 4px 4px 0;
  font-family: var(--sans); font-size: 13px; color: var(--ember);
  margin-bottom: 14px;
}

/* ============ 空状态 ============ */
.empty {
  text-align: center; padding: 80px 20px; color: var(--ash);
}
.empty .big {
  font-family: var(--serif); font-size: 56px; color: var(--edge-3);
  font-style: italic; margin-bottom: 20px;
}
.empty h2 { font-family: var(--serif); font-size: 28px; color: var(--ivory); font-weight: 400; margin-bottom: 10px; }
.empty p { font-size: 14px; color: var(--ash); font-family: var(--serif-cn); }

/* ============ 提示与加载 ============ */
.toast {
  position: fixed; bottom: 32px; left: 50%;
  transform: translateX(-50%);
  background: var(--slate-2); color: var(--ivory);
  padding: 12px 24px; font-family: var(--mono); font-size: 11px;
  border-radius: 6px; border: 1px solid var(--edge-2); letter-spacing: 0.06em;
  opacity: 0; transition: opacity .3s, transform .3s;
  pointer-events: none; z-index: 100;
  box-shadow: 0 8px 32px rgba(0,0,0,.5);
}
.toast.show { opacity: 1; transform: translateX(-50%) translateY(-4px); }
.toast::before { content: "●"; color: var(--sage); margin-right: 8px; }

.loading {
  position: fixed; inset: 0; background: rgba(10,10,12,.78);
  backdrop-filter: blur(8px); display: flex;
  flex-direction: column; align-items: center; justify-content: center;
  z-index: 200; gap: 18px;
}
.loading.hidden { display: none; }
.spinner {
  width: 36px; height: 36px;
  border: 2px solid var(--edge-2); border-top-color: var(--champagne);
  border-radius: 50%; animation: spin .8s linear infinite;
}
.loading p { font-family: var(--mono); font-size: 12px; color: var(--chalk); letter-spacing: 0.1em; }
@keyframes spin { to { transform: rotate(360deg); } }

.version-mark {
  position: fixed; bottom: 24px; right: 32px;
  font-family: var(--mono); font-size: 10px; color: var(--smoke);
  letter-spacing: 0.1em; z-index: 50; pointer-events: none;
}
.version-mark .gold { color: var(--champagne); }

/* ============ 入场动画 ============ */
@keyframes fade-up {
  from { opacity: 0; transform: translateY(12px); }
  to { opacity: 1; transform: translateY(0); }
}
.lib-head, .deck-card, .new-card, .lib-empty { animation: fade-up .6s ease both; }
.deck-card:nth-child(2) { animation-delay: .05s; }
.deck-card:nth-child(3) { animation-delay: .1s; }
.deck-card:nth-child(4) { animation-delay: .15s; }
.deck-card:nth-child(5) { animation-delay: .2s; }
.deck-card:nth-child(6) { animation-delay: .25s; }
.new-card { animation-delay: .25s; }
.panel-eyebrow, .panel-title, .panel-lede, .panel-desc { animation: fade-up .6s ease both; }
.panel-title { animation-delay: .08s; }
.panel-lede, .panel-desc { animation-delay: .16s; }
.pyramid, .title-list, .readthrough, .card { animation: fade-up .8s ease .24s both; }

:focus-visible { outline: 2px solid var(--champagne); outline-offset: 2px; }
::selection { background: var(--champagne); color: var(--void); }

/* 滚动条 */
::-webkit-scrollbar { width: 8px; height: 8px; }
::-webkit-scrollbar-track { background: var(--obsidian); }
::-webkit-scrollbar-thumb { background: var(--edge-2); border-radius: 4px; }
::-webkit-scrollbar-thumb:hover { background: var(--edge-3); }