/* ============================================
   东宫 · 共享样式
   新中式 × Bento Grid × Dark Theme × 2026 Trends
   ============================================ */

/* --- CSS 变量 --- */
:root {
  --ink: #0f0f14;
  --wall: #1a1a24;
  --wall-hover: #222236;
  --vermillion: #c13b3b;
  --vermillion-glow: rgba(193, 59, 59, 0.25);
  --gold: #d4a853;
  --gold-dim: rgba(212, 168, 83, 0.6);
  --jade-white: #e8e0d4;
  --rice-paper: #f5f0e8;
  --indigo: #4a6d8c;
  --jade-green: #5a9e6f;
  --jade-green-glow: rgba(90, 158, 111, 0.3);
  --space-xs: 4px;
  --space-sm: 8px;
  --space-md: 16px;
  --space-lg: 24px;
  --space-xl: 32px;
  --space-2xl: 48px;
  --space-3xl: 64px;
  --space-4xl: 96px;
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --font-display: "Noto Serif SC", "Source Han Serif SC", "STSong", "SimSun", "Songti SC", serif;
  --font-body: system-ui, -apple-system, "Segoe UI", Roboto, "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  --ease-out-expo: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-spring: cubic-bezier(0.34, 1.56, 0.64, 1);
  --transition-fast: 150ms var(--ease-out-expo);
  --transition-normal: 300ms var(--ease-out-expo);
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { font-size: 16px; scroll-behavior: smooth; -webkit-font-smoothing: antialiased; }
body { background: var(--ink); color: var(--jade-white); font-family: var(--font-body); line-height: 1.7; min-height: 100vh; overflow-x: hidden; }
a { color: var(--gold); text-decoration: none; transition: color var(--transition-fast); }
a:hover { color: var(--vermillion); }
img { max-width: 100%; height: auto; display: block; }

body::before {
  content: "";
  position: fixed; inset: 0; pointer-events: none; z-index: 0;
  background: radial-gradient(ellipse at 50% 0%, rgba(212,168,83,0.04) 0%, transparent 60%),
              radial-gradient(ellipse at 80% 100%, rgba(193,59,59,0.03) 0%, transparent 50%);
}

.container { max-width: 1200px; margin: 0 auto; padding: 0 var(--space-lg); position: relative; z-index: 1; }

/* Nav */
.nav { position: sticky; top: 0; z-index: 100; backdrop-filter: blur(20px); -webkit-backdrop-filter: blur(20px); background: rgba(15,15,20,0.85); border-bottom: 1px solid rgba(212,168,83,0.1); padding: var(--space-md) 0; }
.nav .container { display: flex; align-items: center; justify-content: space-between; }
.nav-brand { font-family: var(--font-display); font-size: 1.5rem; color: var(--gold); font-weight: 700; letter-spacing: 0.05em; }
.nav-brand:hover { color: var(--vermillion); }
.nav-links { display: flex; gap: var(--space-lg); list-style: none; }
.nav-links a { color: var(--jade-white); font-size: 0.9rem; letter-spacing: 0.03em; position: relative; }
.nav-links a::after { content: ""; position: absolute; bottom: -4px; left: 0; width: 0; height: 1px; background: var(--gold); transition: width var(--transition-normal); }
.nav-links a:hover::after { width: 100%; }
.nav-toggle { display: none; background: none; border: none; color: var(--jade-white); font-size: 1.5rem; cursor: pointer; padding: var(--space-xs); }

/* Hero */
.hero { text-align: center; padding: var(--space-4xl) 0 var(--space-3xl); position: relative; }
.hero-title { font-family: var(--font-display); font-size: clamp(3rem, 8vw, 6rem); font-weight: 900; color: var(--rice-paper); letter-spacing: 0.15em; line-height: 1.1; margin-bottom: var(--space-md); animation: heroIn 1s var(--ease-out-expo); }
.hero-title .accent { color: var(--vermillion); }
.hero-subtitle { font-family: var(--font-display); font-size: clamp(1rem, 2vw, 1.35rem); color: var(--gold-dim); letter-spacing: 0.15em; margin-bottom: var(--space-2xl); animation: heroIn 1s var(--ease-out-expo) 0.2s both; }
.hero-divider { width: 80px; height: 2px; background: linear-gradient(90deg, transparent, var(--gold), transparent); margin: 0 auto var(--space-2xl); animation: heroIn 1s var(--ease-out-expo) 0.3s both; }
.hero-seal { width: 64px; height: 64px; border: 2px solid var(--vermillion); border-radius: 50%; display: flex; align-items: center; justify-content: center; margin: 0 auto var(--space-xl); color: var(--vermillion); font-family: var(--font-display); font-size: 0.8rem; font-weight: 700; letter-spacing: 0.1em; animation: sealPulse 3s ease-in-out infinite; }
@keyframes heroIn { from { opacity:0; transform:translateY(20px); } to { opacity:1; transform:translateY(0); } }
@keyframes sealPulse { 0%,100% { box-shadow: 0 0 0 0 var(--vermillion-glow); } 50% { box-shadow: 0 0 0 12px transparent; } }

/* Section title */
.section-title { font-family: var(--font-display); font-size: 1.5rem; color: var(--gold); text-align: center; margin-bottom: var(--space-2xl); letter-spacing: 0.1em; }

/* Bento Grid */
.bento-grid { display: grid; grid-template-columns: repeat(4, 1fr); grid-auto-rows: minmax(180px, auto); gap: var(--space-md); padding-bottom: var(--space-4xl); }
.bento-card { background: var(--wall); border: 1px solid rgba(212,168,83,0.08); border-radius: var(--radius-lg); padding: var(--space-lg); display: flex; flex-direction: column; align-items: center; justify-content: center; text-align: center; gap: var(--space-sm); cursor: pointer; transition: background var(--transition-normal), border-color var(--transition-normal), transform var(--transition-normal), box-shadow var(--transition-normal); position: relative; overflow: hidden; text-decoration: none; color: inherit; }
.bento-card::before { content: ""; position: absolute; inset: 0; background: radial-gradient(ellipse at 50% 0%, rgba(212,168,83,0.06) 0%, transparent 70%); opacity: 0; transition: opacity var(--transition-normal); }
.bento-card:hover { background: var(--wall-hover); border-color: var(--gold-dim); transform: translateY(-4px); box-shadow: 0 8px 32px rgba(0,0,0,0.3), 0 0 0 1px var(--gold-dim) inset; }
.bento-card:hover::before { opacity: 1; }
.bento-card.card-lg { grid-column: span 2; grid-row: span 2; }
.bento-card.card-md { grid-column: span 1; grid-row: span 1; }
.bento-card.card-sm { grid-column: span 1; grid-row: span 1; }

/* Card content */
.card-avatar { width: 64px; height: 64px; border-radius: 50%; border: 2px solid var(--vermillion); object-fit: cover; transition: border-color var(--transition-fast); }
.bento-card:hover .card-avatar { border-color: var(--gold); }
.card-lg .card-avatar { width: 96px; height: 96px; }
.card-title { font-family: var(--font-display); font-size: 1.15rem; color: var(--rice-paper); letter-spacing: 0.05em; font-weight: 700; }
.card-lg .card-title { font-size: 1.5rem; }
.card-subtitle { font-size: 0.8rem; color: var(--gold-dim); letter-spacing: 0.08em; font-family: var(--font-display); }
.card-tag { display: inline-block; padding: 2px 12px; border-radius: 20px; font-size: 0.7rem; letter-spacing: 0.05em; color: var(--indigo); border: 1px solid rgba(74,109,140,0.3); background: rgba(74,109,140,0.08); }
.card-desc { font-size: 0.8rem; color: rgba(232,224,212,0.5); max-width: 240px; line-height: 1.5; }
.card-lg .card-desc { max-width: 320px; font-size: 0.85rem; }
.card-status { position: absolute; top: var(--space-md); right: var(--space-md); width: 8px; height: 8px; border-radius: 50%; background: var(--jade-green); box-shadow: 0 0 6px var(--jade-green-glow); }
.card-status.offline { background: rgba(232,224,212,0.25); box-shadow: none; }

/* Footer */
.footer { text-align: center; padding: var(--space-3xl) 0 var(--space-2xl); border-top: 1px solid rgba(212,168,83,0.08); }
.footer-text { font-family: var(--font-display); font-size: 0.85rem; color: rgba(232,224,212,0.3); letter-spacing: 0.1em; }
.footer-text .accent { color: var(--vermillion); }

/* Role pages */
.role-page { padding: var(--space-3xl) 0; }
.role-header { text-align: center; margin-bottom: var(--space-3xl); }
.role-avatar { width: 120px; height: 120px; border-radius: 50%; border: 3px solid var(--vermillion); object-fit: cover; margin: 0 auto var(--space-lg); }
.role-name { font-family: var(--font-display); font-size: 2.5rem; color: var(--rice-paper); font-weight: 900; letter-spacing: 0.1em; margin-bottom: var(--space-sm); }
.role-title-text { font-family: var(--font-display); font-size: 1.1rem; color: var(--gold-dim); letter-spacing: 0.15em; }
.role-divider { width: 60px; height: 1px; background: var(--gold); margin: var(--space-xl) auto; opacity: 0.4; }
.role-desc { font-size: 1rem; color: rgba(232,224,212,0.6); max-width: 600px; margin: 0 auto; line-height: 1.8; }
.role-features { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: var(--space-md); margin-top: var(--space-2xl); }
.feature-card { background: var(--wall); border: 1px solid rgba(212,168,83,0.08); border-radius: var(--radius-md); padding: var(--space-lg); text-align: center; }
.feature-icon { font-size: 2rem; margin-bottom: var(--space-sm); }
.feature-title { font-family: var(--font-display); font-size: 1rem; color: var(--rice-paper); margin-bottom: var(--space-xs); }
.feature-desc { font-size: 0.8rem; color: rgba(232,224,212,0.45); line-height: 1.6; }
.under-construction { background: var(--wall); border: 1px dashed rgba(212,168,83,0.2); border-radius: var(--radius-md); padding: var(--space-xl); text-align: center; margin-top: var(--space-2xl); }
.under-construction .icon { font-size: 2.5rem; margin-bottom: var(--space-sm); }
.under-construction .text { font-family: var(--font-display); color: var(--gold-dim); letter-spacing: 0.1em; }
.back-home { display: inline-flex; align-items: center; gap: var(--space-sm); color: var(--gold); font-family: var(--font-display); font-size: 0.9rem; letter-spacing: 0.05em; margin-bottom: var(--space-xl); transition: color var(--transition-fast); }
.back-home:hover { color: var(--vermillion); }

/* Fade-in animation */
.fade-in { opacity: 0; transform: translateY(24px); transition: opacity 0.6s var(--ease-out-expo), transform 0.6s var(--ease-out-expo); }
.fade-in.visible { opacity: 1; transform: translateY(0); }

/* ===== RESPONSIVE ===== */
@media (min-width:768px) and (max-width:1023px) {
  .bento-grid { grid-template-columns: repeat(3, 1fr); }
}
@media (max-width:680px) {
  :root { --space-4xl: 64px; --space-3xl: 48px; --space-2xl: 32px; }
  .nav-links { display: none; position: absolute; top: 100%; left: 0; right: 0; flex-direction: column; background: rgba(15,15,20,0.95); backdrop-filter: blur(20px); padding: var(--space-md); border-bottom: 1px solid rgba(212,168,83,0.1); }
  .nav-links.open { display: flex; }
  .nav-toggle { display: block; }
  .bento-grid { grid-template-columns: 1fr; gap: var(--space-sm); }
  .bento-card.card-lg, .bento-card.card-md, .bento-card.card-sm { grid-column: span 1; grid-row: span 1; }
  .card-lg .card-avatar { width: 64px; height: 64px; }
  .card-lg .card-title { font-size: 1.15rem; }
  .card-lg .card-desc { font-size: 0.8rem; max-width: 240px; }
  .hero-title { letter-spacing: 0.08em; }
  .role-name { font-size: 1.8rem; }
  .role-avatar { width: 80px; height: 80px; }
}