/* ========================================
   《黎明之后》官方网站 — 全局样式表
   After Dawn — Official Website Styles
   暗色主题 · 末世氛围 · 桌面游戏
   ======================================== */

/* --- CSS Variables / Design Tokens --- */
:root {
  /* Background */
  --bg-deep: #0a0a0f;
  --bg-surface: #13131a;
  --bg-elevated: #1a1a24;
  --bg-card: #1e1e2e;
  --bg-hover: #252538;

  /* Text */
  --text-primary: #e8e6f0;
  --text-secondary: #a0a0b8;
  --text-muted: #686880;
  --text-accent: #c4a35a;

  /* Borders */
  --border-subtle: #2a2a3a;
  --border-medium: #3a3a52;
  --border-accent: #5a4a3a;

  /* Accent Colors — Card Type Themed */
  --color-whisper: #c0392b;      /* 怪谈卡 — 暗红 */
  --color-whisper-glow: #e74c3c;
  --color-counter: #2e86c1;      /* 反击卡 — 深蓝 */
  --color-counter-glow: #3498db;
  --color-rule: #d4a017;         /* 规则卡 — 琥珀金 */
  --color-rule-glow: #f1c40f;
  --color-character: #8e44ad;    /* 角色卡 — 紫 */
  --color-character-glow: #a569bd;
  --color-goal: #27ae60;         /* 个人目的卡 — 绿 */
  --color-goal-glow: #2ecc71;
  --color-supply: #a0522d;       /* 物资卡 — 赭石棕 */
  --color-supply-glow: #cd853f;

  /* Card Rarity Levels */
  --rarity-basic: #7f8c8d;
  --rarity-awaken: #3498db;
  --rarity-extreme: #e67e22;
  --rarity-truth: #c0392b;
  --rarity-rumor: #6c7a89;
  --rarity-anomaly: #8e44ad;
  --rarity-grotesque: #d35400;
  --rarity-disaster: #c0392b;

  /* Functional */
  --danger: #e74c3c;
  --warning: #f39c12;
  --success: #2ecc71;
  --info: #3498db;

  /* Typography */
  --font-sans: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  --font-mono: "Cascadia Code", "Fira Code", "Consolas", monospace;
  --font-display: "STKaiti", "KaiTi", "楷体", serif;

  /* Spacing */
  --space-xs: 4px;
  --space-sm: 8px;
  --space-md: 16px;
  --space-lg: 24px;
  --space-xl: 32px;
  --space-2xl: 48px;
  --space-3xl: 64px;

  /* Radius */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 16px;

  /* Shadows */
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.4);
  --shadow-md: 0 4px 12px rgba(0,0,0,0.5);
  --shadow-lg: 0 8px 24px rgba(0,0,0,0.6);
  --shadow-glow: 0 0 20px rgba(192,57,43,0.3);

  /* Transitions */
  --transition-fast: 150ms ease;
  --transition-base: 300ms ease;
  --transition-slow: 500ms ease;

  /* Layout */
  --nav-height: 60px;
  --max-width: 1200px;
}

/* --- Reset & Base --- */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-sans);
  background: var(--bg-deep);
  color: var(--text-primary);
  line-height: 1.7;
  min-height: 100vh;
  overflow-x: hidden;
}

/* Background texture */
body::before {
  content: '';
  position: fixed;
  top: 0; left: 0; right: 0; bottom: 0;
  background:
    radial-gradient(ellipse at 20% 10%, rgba(192,57,43,0.06) 0%, transparent 50%),
    radial-gradient(ellipse at 80% 50%, rgba(46,134,193,0.04) 0%, transparent 50%),
    radial-gradient(ellipse at 50% 90%, rgba(142,68,173,0.05) 0%, transparent 50%);
  pointer-events: none;
  z-index: 0;
}

a {
  color: var(--color-counter);
  text-decoration: none;
  transition: color var(--transition-fast);
}
a:hover { color: var(--color-counter-glow); }

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

/* --- Typography --- */
h1, h2, h3, h4, h5, h6 {
  font-weight: 700;
  line-height: 1.3;
  color: var(--text-primary);
}

h1 { font-size: clamp(2rem, 5vw, 3.2rem); letter-spacing: 0.02em; }
h2 { font-size: clamp(1.5rem, 4vw, 2.4rem); }
h3 { font-size: clamp(1.2rem, 3vw, 1.6rem); }
h4 { font-size: 1.1rem; }

/* Display font for Chinese titles */
.title-display {
  font-family: var(--font-display);
  font-weight: 400;
  letter-spacing: 0.08em;
}

/* --- Navigation Bar --- */
.nav {
  position: sticky;
  top: 0;
  z-index: 100;
  height: var(--nav-height);
  background: rgba(10,10,15,0.92);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border-subtle);
  display: flex;
  align-items: center;
}

.nav-inner {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--space-lg);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-logo {
  font-family: var(--font-display);
  font-size: 1.4rem;
  color: var(--text-primary);
  letter-spacing: 0.06em;
  white-space: nowrap;
}

.nav-logo span {
  color: var(--color-whisper);
}

.nav-links {
  display: flex;
  gap: var(--space-lg);
  list-style: none;
  align-items: center;
}

.nav-links a {
  color: var(--text-secondary);
  font-size: 0.95rem;
  padding: var(--space-xs) 0;
  border-bottom: 2px solid transparent;
  transition: all var(--transition-fast);
}

.nav-links a:hover,
.nav-links a.active {
  color: var(--text-primary);
  border-bottom-color: var(--color-whisper);
}

/* Mobile nav toggle */
.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: var(--space-sm);
  background: none;
  border: none;
}

.nav-toggle span {
  width: 24px;
  height: 2px;
  background: var(--text-primary);
  border-radius: 2px;
  transition: all var(--transition-fast);
}

/* --- Layout --- */
.container {
  position: relative;
  z-index: 1;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--space-lg);
}

.page-section {
  padding: var(--space-3xl) 0;
}

/* --- Hero Section --- */
.hero {
  min-height: calc(100vh - var(--nav-height));
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  text-align: center;
  padding: var(--space-3xl) var(--space-lg);
}

.hero-title {
  font-family: var(--font-display);
  font-size: clamp(2.5rem, 7vw, 4.5rem);
  line-height: 1.2;
  margin-bottom: var(--space-md);
  background: linear-gradient(135deg, var(--text-primary) 0%, var(--color-whisper) 40%, var(--color-rule-glow) 70%, var(--text-primary) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-subtitle {
  font-size: 1.15rem;
  color: var(--text-secondary);
  max-width: 600px;
  margin-bottom: var(--space-xl);
  line-height: 1.8;
}

.hero-tags {
  display: flex;
  gap: var(--space-md);
  margin-bottom: var(--space-xl);
  flex-wrap: wrap;
  justify-content: center;
}

.hero-tag {
  padding: var(--space-xs) var(--space-md);
  border: 1px solid var(--border-medium);
  border-radius: var(--radius-xl);
  font-size: 0.85rem;
  color: var(--text-secondary);
}

/* --- Buttons --- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  padding: 10px 28px;
  border: none;
  border-radius: var(--radius-md);
  font-size: 0.95rem;
  font-family: var(--font-sans);
  cursor: pointer;
  transition: all var(--transition-base);
  text-decoration: none;
}

.btn-primary {
  background: var(--color-whisper);
  color: #fff;
  box-shadow: 0 0 20px rgba(192,57,43,0.3);
}
.btn-primary:hover {
  background: var(--color-whisper-glow);
  box-shadow: 0 0 30px rgba(231,76,60,0.5);
  transform: translateY(-2px);
  color: #fff;
}

.btn-secondary {
  background: transparent;
  color: var(--text-primary);
  border: 1px solid var(--border-medium);
}
.btn-secondary:hover {
  border-color: var(--text-secondary);
  background: var(--bg-hover);
}

.btn-ghost {
  background: transparent;
  color: var(--text-secondary);
  border: 1px solid transparent;
}
.btn-ghost:hover {
  color: var(--text-primary);
  border-color: var(--border-subtle);
}

/* --- Card Components --- */
.card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
  transition: all var(--transition-base);
}

.card:hover {
  border-color: var(--border-medium);
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

.card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--space-md);
}

.card-title {
  font-size: 1.1rem;
  font-weight: 600;
}

.card-badge {
  display: inline-block;
  padding: 2px 10px;
  border-radius: var(--radius-xl);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.05em;
}

/* Card Type Colors */
.card-badge.whisper { background: rgba(192,57,43,0.2); color: var(--color-whisper-glow); border: 1px solid rgba(192,57,43,0.3); }
.card-badge.countermeasure { background: rgba(46,134,193,0.2); color: var(--color-counter-glow); border: 1px solid rgba(46,134,193,0.3); }
.card-badge.rule { background: rgba(212,160,23,0.2); color: var(--color-rule-glow); border: 1px solid rgba(212,160,23,0.3); }
.card-badge.character { background: rgba(142,68,173,0.2); color: var(--color-character-glow); border: 1px solid rgba(142,68,173,0.3); }
.card-badge.goal { background: rgba(39,174,96,0.2); color: var(--color-goal-glow); border: 1px solid rgba(39,174,96,0.3); }
.card-badge.supply { background: rgba(160,82,45,0.2); color: var(--color-supply-glow); border: 1px solid rgba(160,82,45,0.3); }

/* Rarity Badges */
.badge-rarity {
  display: inline-block;
  padding: 1px 8px;
  border-radius: var(--radius-sm);
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}
.badge-rarity.basic, .badge-rarity.rumor { background: rgba(127,140,141,0.2); color: #95a5a6; }
.badge-rarity.awaken, .badge-rarity.anomaly { background: rgba(52,152,219,0.2); color: #5dade2; }
.badge-rarity.extreme, .badge-rarity.grotesque { background: rgba(230,126,34,0.2); color: #eb984e; }
.badge-rarity.truth, .badge-rarity.disaster { background: rgba(231,76,60,0.2); color: #ec7063; }
.badge-rarity.goal { background: rgba(39,174,96,0.2); color: var(--color-goal-glow); }

/* --- Card Grid --- */
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: var(--space-lg);
}

.card-grid.small {
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
}

/* --- Character Grid (3 columns) --- */
.character-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-lg);
}

@media (max-width: 900px) {
  .character-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 600px) {
  .character-grid {
    grid-template-columns: 1fr;
  }
}

/* --- Skill Effect Formatted Text --- */
.skill-section {
  margin-bottom: var(--space-sm);
  padding-bottom: var(--space-sm);
  border-bottom: 1px solid var(--border-subtle);
}
.skill-section:last-child {
  margin-bottom: 0;
  padding-bottom: 0;
  border-bottom: none;
}
.skill-section-label {
  font-size: 0.7rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 4px;
}
.skill-line {
  font-size: 0.88rem;
  color: var(--text-primary);
  line-height: 1.65;
  padding: 2px 0;
  padding-left: 12px;
  position: relative;
}
.skill-line::before {
  content: '';
  position: absolute;
  left: 0;
  top: 10px;
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: var(--color-character-glow);
  opacity: 0.5;
}
.skill-empty {
  color: var(--text-muted);
  font-size: 0.85rem;
  font-style: italic;
  padding: var(--space-sm) 0;
}

/* --- Filters --- */
.filter-bar {
  display: flex;
  gap: var(--space-sm);
  flex-wrap: wrap;
  margin-bottom: var(--space-xl);
  padding: var(--space-md);
  background: var(--bg-surface);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-subtle);
}

.filter-btn {
  padding: 6px 16px;
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-xl);
  background: transparent;
  color: var(--text-secondary);
  font-size: 0.85rem;
  cursor: pointer;
  transition: all var(--transition-fast);
  font-family: var(--font-sans);
}

.filter-btn:hover { color: var(--text-primary); border-color: var(--border-medium); }
.filter-btn.active { background: var(--bg-hover); color: var(--text-primary); border-color: var(--text-muted); }

.filter-btn.type-whisper.active { border-color: var(--color-whisper); color: var(--color-whisper-glow); }
.filter-btn.type-counter.active { border-color: var(--color-counter); color: var(--color-counter-glow); }
.filter-btn.type-rule.active { border-color: var(--color-rule); color: var(--color-rule-glow); }
.filter-btn.type-character.active { border-color: var(--color-character); color: var(--color-character-glow); }
.filter-btn.type-goal.active { border-color: var(--color-goal); color: var(--color-goal-glow); }
.filter-btn.type-supply.active { border-color: var(--color-supply); color: var(--color-supply-glow); }

/* --- Detail Page --- */
.detail-header {
  padding: var(--space-2xl) 0 var(--space-lg);
  border-bottom: 1px solid var(--border-subtle);
  margin-bottom: var(--space-xl);
}

.detail-back {
  display: inline-flex;
  align-items: center;
  gap: var(--space-xs);
  color: var(--text-muted);
  font-size: 0.9rem;
  margin-bottom: var(--space-lg);
  transition: color var(--transition-fast);
}
.detail-back:hover { color: var(--text-primary); }

.detail-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-xl);
}

.detail-section {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
  margin-bottom: var(--space-lg);
}

.detail-section h4 {
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-muted);
  margin-bottom: var(--space-md);
  padding-bottom: var(--space-sm);
  border-bottom: 1px solid var(--border-subtle);
}

.detail-section .content {
  color: var(--text-primary);
  line-height: 1.8;
}

/* --- Tables --- */
.table-wrap {
  overflow-x: auto;
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
}

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9rem;
}

th, td {
  padding: var(--space-sm) var(--space-md);
  text-align: left;
  border-bottom: 1px solid var(--border-subtle);
}

th {
  background: var(--bg-elevated);
  font-weight: 600;
  color: var(--text-secondary);
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  white-space: nowrap;
}

tr:last-child td { border-bottom: none; }
tr:hover td { background: var(--bg-hover); }

/* --- Flowchart Viewer --- */
.mermaid-wrapper {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
  margin-bottom: var(--space-xl);
  overflow-x: auto;
}

.mermaid-wrapper svg {
  max-width: 100%;
  height: auto;
}

/* --- Accordion --- */
.accordion {
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  overflow: hidden;
  margin-bottom: var(--space-md);
}

.accordion-header {
  width: 100%;
  padding: var(--space-md) var(--space-lg);
  background: var(--bg-surface);
  border: none;
  color: var(--text-primary);
  font-size: 1rem;
  font-family: var(--font-sans);
  text-align: left;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: space-between;
  transition: background var(--transition-fast);
}

.accordion-header:hover { background: var(--bg-elevated); }

.accordion-header::after {
  content: '+';
  font-size: 1.3rem;
  color: var(--text-muted);
  transition: transform var(--transition-base);
}

.accordion-header.open::after {
  content: '−';
  transform: rotate(0);
}

.accordion-body {
  padding: 0 var(--space-lg);
  max-height: 0;
  overflow: hidden;
  transition: all var(--transition-base);
  background: var(--bg-surface);
  color: var(--text-secondary);
  line-height: 1.8;
}

.accordion-body.open {
  padding: var(--space-lg);
  max-height: 2000px;
}

/* --- Stats / Numbers --- */
.stat-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: var(--space-md);
}

.stat-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
  text-align: center;
}

.stat-number {
  font-size: 2.5rem;
  font-weight: 800;
  line-height: 1;
  margin-bottom: var(--space-xs);
}

.stat-label {
  font-size: 0.85rem;
  color: var(--text-muted);
}

.stat-number.whisper { color: var(--color-whisper-glow); }
.stat-number.countermeasure { color: var(--color-counter-glow); }
.stat-number.rule { color: var(--color-rule-glow); }
.stat-number.character { color: var(--color-character-glow); }
.stat-number.goal { color: var(--color-goal-glow); }
.stat-number.supply { color: var(--color-supply-glow); }

/* --- Footer --- */
.footer {
  border-top: 1px solid var(--border-subtle);
  padding: var(--space-2xl) 0;
  text-align: center;
  color: var(--text-muted);
  font-size: 0.85rem;
}

/* --- Randomizer Tool --- */
.randomizer-result {
  background: var(--bg-card);
  border: 2px solid var(--border-medium);
  border-radius: var(--radius-xl);
  padding: var(--space-xl);
  text-align: center;
  min-height: 200px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  transition: all var(--transition-base);
}

.randomizer-result .card-name {
  font-size: 1.8rem;
  font-weight: 700;
  margin-bottom: var(--space-sm);
}

.randomizer-result .card-type {
  margin-bottom: var(--space-md);
}

.randomizer-result .card-effect {
  color: var(--text-secondary);
  font-size: 0.95rem;
  max-width: 500px;
}

/* --- Animations --- */
@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.5; }
}

.animate-in {
  animation: fadeInUp 0.6s ease forwards;
  opacity: 0;
}

.stagger-1 { animation-delay: 0.1s; }
.stagger-2 { animation-delay: 0.2s; }
.stagger-3 { animation-delay: 0.3s; }
.stagger-4 { animation-delay: 0.4s; }

/* --- Tabs --- */
.tabs {
  display: flex;
  gap: var(--space-xs);
  border-bottom: 1px solid var(--border-subtle);
  margin-bottom: var(--space-xl);
  overflow-x: auto;
}

.tab-btn {
  padding: var(--space-sm) var(--space-lg);
  border: none;
  background: none;
  color: var(--text-muted);
  font-size: 0.9rem;
  font-family: var(--font-sans);
  cursor: pointer;
  border-bottom: 2px solid transparent;
  white-space: nowrap;
  transition: all var(--transition-fast);
}

.tab-btn:hover { color: var(--text-secondary); }
.tab-btn.active { color: var(--text-primary); border-bottom-color: var(--color-whisper); }

.tab-panel { display: none; }
.tab-panel.active { display: block; }

/* --- Search --- */
.search-box {
  width: 100%;
  max-width: 400px;
  padding: 10px 16px;
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  color: var(--text-primary);
  font-size: 0.95rem;
  font-family: var(--font-sans);
  transition: border-color var(--transition-fast);
}

.search-box:focus {
  outline: none;
  border-color: var(--border-medium);
}

.search-box::placeholder { color: var(--text-muted); }

/* --- Scrollbar --- */
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: var(--bg-deep); }
::-webkit-scrollbar-thumb { background: var(--border-medium); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: var(--text-muted); }

/* ========================================
   网站第二期新增样式
   ======================================== */

/* --- Image Placeholder --- */
.img-placeholder {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  width: 100%;
  aspect-ratio: 630 / 880;
  background: var(--bg-elevated);
  border: 2px dashed var(--border-medium);
  border-radius: var(--radius-md);
  color: var(--text-muted);
  font-size: 0.8rem;
  text-align: center;
  transition: all var(--transition-base);
  cursor: default;
  gap: var(--space-xs);
}

.img-placeholder .ph-icon {
  font-size: 2rem;
  opacity: 0.4;
}

.img-placeholder .ph-label {
  font-size: 0.75rem;
  opacity: 0.6;
}

.img-placeholder .ph-size {
  font-size: 0.65rem;
  opacity: 0.4;
  font-family: var(--font-mono);
}

.img-placeholder:hover {
  border-color: var(--text-muted);
  background: var(--bg-hover);
}

.img-placeholder.char-portrait {
  aspect-ratio: 1 / 1;
  border-radius: 50%;
  max-width: 200px;
  margin: 0 auto;
}

.img-placeholder.logo {
  aspect-ratio: 1 / 1;
  max-width: 120px;
  border-radius: var(--radius-xl);
}

.img-placeholder.hero-bg {
  aspect-ratio: auto;
  height: 300px;
  border-radius: 0;
  width: 100%;
  opacity: 0.5;
}

/* --- Card Image Container (for card pages) --- */
.card-img-wrap {
  position: relative;
  width: 100%;
  aspect-ratio: 630 / 880;
  border-radius: var(--radius-md);
  overflow: hidden;
  margin-bottom: var(--space-md);
  background: var(--bg-elevated);
}

/* Horizontal cards: rules & personal goals (2640×930) */
.card-img-wrap.horizontal {
  aspect-ratio: 2640 / 930;
}

.card-img-wrap img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: var(--radius-md);
}

.card-img-wrap .img-placeholder {
  position: absolute;
  inset: 0;
  border-radius: var(--radius-md);
}

/* --- Chat / Dialogue Window --- */
.chat-container {
  max-width: 800px;
  margin: 0 auto;
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-xl);
  overflow: hidden;
  min-height: 500px;
  display: flex;
  flex-direction: column;
}

.chat-header-bar {
  padding: var(--space-md) var(--space-lg);
  background: var(--bg-elevated);
  border-bottom: 1px solid var(--border-subtle);
  display: flex;
  align-items: center;
  gap: var(--space-md);
}

.chat-header-bar .chat-avatar {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--color-whisper);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  flex-shrink: 0;
}

.chat-header-bar .chat-title {
  font-weight: 600;
  font-size: 1rem;
}

.chat-header-bar .chat-subtitle {
  font-size: 0.75rem;
  color: var(--text-muted);
}

.chat-messages {
  flex: 1;
  overflow-y: auto;
  padding: var(--space-lg);
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
  max-height: 500px;
}

.chat-bubble {
  max-width: 85%;
  padding: var(--space-md) var(--space-lg);
  border-radius: var(--radius-lg);
  line-height: 1.7;
  font-size: 0.95rem;
  animation: fadeInUp 0.3s ease;
  position: relative;
}

.chat-bubble.mayor {
  align-self: flex-start;
  background: var(--bg-elevated);
  border: 1px solid var(--border-subtle);
  border-top-left-radius: var(--radius-sm);
  color: var(--text-primary);
}

.chat-bubble.mayor::before {
  content: '市长';
  position: absolute;
  top: -18px;
  left: 0;
  font-size: 0.7rem;
  color: var(--color-whisper-glow);
  font-weight: 600;
  letter-spacing: 0.05em;
}

.chat-bubble.player {
  align-self: flex-end;
  background: rgba(46,134,193,0.15);
  border: 1px solid rgba(46,134,193,0.3);
  border-top-right-radius: var(--radius-sm);
  color: var(--text-primary);
}

.chat-bubble.player::before {
  content: '你';
  position: absolute;
  top: -18px;
  right: 0;
  font-size: 0.7rem;
  color: var(--color-counter-glow);
  font-weight: 600;
  letter-spacing: 0.05em;
}

.chat-bubble.system-msg {
  align-self: center;
  max-width: 90%;
  background: transparent;
  border: 1px dashed var(--border-medium);
  border-radius: var(--radius-md);
  color: var(--text-muted);
  font-size: 0.8rem;
  text-align: center;
  padding: var(--space-sm) var(--space-md);
}

.chat-bubble.story {
  align-self: flex-start;
  background: rgba(212,160,23,0.08);
  border: 1px solid rgba(212,160,23,0.25);
  border-left: 3px solid var(--color-rule);
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  font-family: var(--font-display);
  font-size: 1rem;
  line-height: 1.9;
  color: var(--text-primary);
}

/* --- Chat Input Area --- */
.chat-input-area {
  padding: var(--space-md) var(--space-lg);
  border-top: 1px solid var(--border-subtle);
  display: flex;
  gap: var(--space-sm);
  flex-wrap: wrap;
}

.chat-input-area .choice-btn {
  padding: var(--space-sm) var(--space-lg);
  border: 1px solid var(--border-medium);
  border-radius: var(--radius-xl);
  background: var(--bg-elevated);
  color: var(--text-primary);
  font-size: 0.9rem;
  cursor: pointer;
  transition: all var(--transition-fast);
  font-family: var(--font-sans);
  white-space: nowrap;
}

.chat-input-area .choice-btn:hover {
  border-color: var(--color-counter);
  background: var(--bg-hover);
  color: var(--color-counter-glow);
}

.chat-input-area .choice-btn.primary-choice {
  border-color: var(--color-counter);
  background: rgba(46,134,193,0.15);
  color: var(--color-counter-glow);
}

/* --- Scene Selector --- */
.scene-selector {
  display: flex;
  gap: var(--space-sm);
  margin-bottom: var(--space-xl);
  flex-wrap: wrap;
  justify-content: center;
}

.scene-card {
  flex: 1;
  min-width: 180px;
  max-width: 250px;
  padding: var(--space-lg);
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  cursor: pointer;
  transition: all var(--transition-base);
  text-align: center;
}

.scene-card:hover {
  border-color: var(--border-medium);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.scene-card.active {
  border-color: var(--color-counter);
  background: rgba(46,134,193,0.08);
}

.scene-card .scene-icon {
  font-size: 2rem;
  margin-bottom: var(--space-sm);
}

.scene-card .scene-name {
  font-weight: 600;
  margin-bottom: var(--space-xs);
}

.scene-card .scene-desc {
  font-size: 0.8rem;
  color: var(--text-muted);
}

/* --- Designer Page --- */
.designer-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: var(--space-xl);
}

.design-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-xl);
  overflow: hidden;
  transition: all var(--transition-base);
}

.design-card:hover {
  border-color: var(--border-medium);
  box-shadow: var(--shadow-lg);
  transform: translateY(-2px);
}

.design-card .dc-header {
  padding: var(--space-lg);
  border-bottom: 1px solid var(--border-subtle);
  display: flex;
  align-items: center;
  gap: var(--space-md);
}

.design-card .dc-icon {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  flex-shrink: 0;
}

.design-card .dc-icon.purple { background: rgba(142,68,173,0.2); color: var(--color-character-glow); }
.design-card .dc-icon.amber { background: rgba(196,163,90,0.2); color: var(--text-accent); }
.design-card .dc-icon.blue { background: rgba(46,134,193,0.2); color: var(--color-counter-glow); }
.design-card .dc-icon.coral { background: rgba(212,117,107,0.2); color: #d4756b; }

.design-card .dc-title {
  font-weight: 600;
  font-size: 1.05rem;
}

.design-card .dc-subtitle {
  font-size: 0.8rem;
  color: var(--text-muted);
}

.design-card .dc-body {
  padding: var(--space-lg);
  color: var(--text-secondary);
  font-size: 0.9rem;
  line-height: 1.7;
}

.design-card .dc-footer {
  padding: var(--space-md) var(--space-lg);
  border-top: 1px solid var(--border-subtle);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.design-card .dc-tag {
  font-size: 0.75rem;
  color: var(--text-muted);
  padding: 2px 8px;
  background: var(--bg-elevated);
  border-radius: var(--radius-sm);
}

/* --- Embedded Content Frame --- */
.embed-frame {
  width: 100%;
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  background: var(--bg-deep);
  overflow: hidden;
}

.embed-frame iframe {
  width: 100%;
  height: 600px;
  border: none;
}

.embed-frame .embed-header {
  padding: var(--space-sm) var(--space-md);
  background: var(--bg-elevated);
  border-bottom: 1px solid var(--border-subtle);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.embed-frame .embed-title {
  font-size: 0.85rem;
  font-weight: 600;
}

.embed-frame .embed-link {
  font-size: 0.75rem;
  color: var(--color-counter);
  cursor: pointer;
}

/* --- Section Divider --- */
.section-divider {
  text-align: center;
  padding: var(--space-3xl) 0;
  position: relative;
}

.section-divider::before {
  content: '';
  position: absolute;
  left: 50%;
  top: 50%;
  width: 1px;
  height: 60px;
  background: var(--border-medium);
  transform: translate(-50%, -50%);
}

/* --- Typing Indicator --- */
.typing-indicator {
  display: flex;
  gap: 4px;
  padding: var(--space-md);
  align-self: flex-start;
}

.typing-indicator span {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--text-muted);
  animation: pulse 1.2s infinite;
}

.typing-indicator span:nth-child(2) { animation-delay: 0.2s; }
.typing-indicator span:nth-child(3) { animation-delay: 0.4s; }

/* --- Responsive --- */
@media (max-width: 768px) {
  :root {
    --nav-height: 56px;
    --space-3xl: 40px;
    --space-2xl: 32px;
  }

  .nav-links {
    position: fixed;
    top: var(--nav-height);
    left: 0;
    right: 0;
    background: rgba(10,10,15,0.98);
    backdrop-filter: blur(16px);
    flex-direction: column;
    padding: var(--space-lg);
    gap: var(--space-md);
    display: none;
    border-bottom: 1px solid var(--border-subtle);
  }

  .nav-links.open { display: flex; }
  .nav-toggle { display: flex; }

  .detail-grid { grid-template-columns: 1fr; }
  .card-grid { grid-template-columns: 1fr; }
  .stat-grid { grid-template-columns: repeat(2, 1fr); }
  .hero-title { font-size: 2.2rem; }

  .container { padding: 0 var(--space-md); }
  .page-section { padding: var(--space-2xl) 0; }
  .chat-bubble { max-width: 92%; }
  .designer-grid { grid-template-columns: 1fr; }
  .scene-card { min-width: 140px; }
  .embed-frame iframe { height: 400px; }
}

@media (max-width: 480px) {
  .stat-grid { grid-template-columns: 1fr; }
  .filter-bar { flex-direction: column; }
}