/* ============================================================
   Taishang Laojun Hub — "The Supreme Lord"
   Amethyst / gold / ember palette.
   Alchemical mysticism, Daoist refinement, cosmic furnace.
   ============================================================ */

:root {
  --tl-amethyst: #7b4fbf;
  --tl-deep-purple: #4a2d7a;
  --tl-gold: #c9a84c;
  --tl-brass: #b5853a;
  --tl-ember: #c44d34;
  --tl-char: #1a1520;
  --tl-char-light: #2a2035;
  --tl-cream: #f5f0e8;
  --tl-parchment: #ede4d3;
  --tl-mist: #a098b0;
  --tl-silver: #c8c0d8;
  --tl-ash: #4a3a5a;
}

/* ---- Navigation ---- */
.tl-nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--space-sm) var(--space-lg);
  background: rgba(26,21,32,0.95);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid rgba(201,168,76,0.12);
}
.tl-nav a {
  font-family: var(--font-display);
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 2px;
  color: var(--tl-silver);
  text-decoration: none;
  transition: color 0.3s;
}
.tl-nav a:hover { color: var(--tl-gold); }

/* ---- Hero ---- */
.tl-hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(170deg, #0d0a14 0%, #1a1520 35%, #2a1f3a 65%, #1a1520 100%);
  overflow: hidden;
}
.tl-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  z-index: 0;
  background: radial-gradient(ellipse at 50% 40%, rgba(123,79,191,0.08) 0%, transparent 60%);
  pointer-events: none;
}
.tl-hero-bg-img {
  position: absolute;
  inset: 0;
  z-index: 0;
}
.tl-hero-bg-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.45;
  filter: brightness(0.6) saturate(0.7);
}
.tl-hero::after {
  content: '';
  position: absolute;
  inset: 0;
  z-index: 1;
  background: radial-gradient(ellipse at center, transparent 30%, rgba(13,10,20,0.7) 100%);
  pointer-events: none;
}
.tl-hero-inner {
  position: relative;
  z-index: 2;
  text-align: center;
  max-width: 680px;
  padding: var(--space-lg);
}
.tl-hero-sigil {
  font-size: 3.4rem;
  margin-bottom: var(--space-sm);
  filter: drop-shadow(0 0 20px rgba(201,168,76,0.15));
}
.tl-hero-kicker {
  font-family: var(--font-display);
  font-size: 0.82rem;
  letter-spacing: 4px;
  text-transform: uppercase;
  color: var(--tl-amethyst);
  margin-bottom: var(--space-xs);
}
.tl-hero-title {
  font-family: var(--font-display);
  font-size: clamp(2.4rem, 5vw, 3.6rem);
  color: var(--tl-silver);
  text-shadow: 0 0 40px rgba(123,79,191,0.2);
  margin-bottom: var(--space-xs);
}
.tl-hero-chinese {
  font-family: var(--font-chinese-display);
  font-size: clamp(2rem, 4vw, 3rem);
  color: rgba(200,192,216,0.22);
  margin-bottom: var(--space-sm);
}
.tl-hero-divider {
  width: 80px; height: 1px;
  background: linear-gradient(90deg, transparent, var(--tl-gold), transparent);
  margin: var(--space-md) auto;
  opacity: 0.5;
}
.tl-hero-sub {
  font-family: var(--font-body);
  font-size: 1.1rem;
  color: var(--tl-mist);
  font-style: italic;
  line-height: 1.6;
  max-width: 500px;
  margin: 0 auto;
}
.tl-hero-stat {
  display: inline-block;
  font-family: var(--font-display);
  font-size: 0.7rem;
  letter-spacing: 3px;
  text-transform: uppercase;
  color: var(--tl-gold);
  border: 1px solid rgba(201,168,76,0.2);
  padding: 12px 24px;
  margin-top: var(--space-md);
}

/* ---- Scroll ---- */
.tl-scroll { position: absolute; bottom: 32px; left: 50%; transform: translateX(-50%); z-index: 2; }
.tl-scroll-arrow { display: block; width: 20px; height: 20px; border-right: 1px solid rgba(200,192,216,0.3); border-bottom: 1px solid rgba(200,192,216,0.3); transform: rotate(45deg); animation: tl-scroll-bob 2s ease-in-out infinite; }
@keyframes tl-scroll-bob { 0%, 100% { transform: rotate(45deg) translate(0,0); opacity: 0.3; } 50% { transform: rotate(45deg) translate(5px,5px); opacity: 0.7; } }

/* ---- Titles Grid ---- */
.tl-titles {
  padding: var(--space-xxl) 0;
  background: var(--tl-cream);
}
.tl-titles-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-md);
  max-width: 960px; margin: 0 auto;
}
.tl-title-card {
  text-align: center;
  padding: var(--space-md);
  background: #fff;
  border: 1px solid rgba(74,45,122,0.06);
  border-radius: var(--radius-sm);
  transition: transform 0.3s, box-shadow 0.3s;
}
.tl-title-card:hover { transform: translateY(-3px); box-shadow: 0 6px 24px rgba(26,21,32,0.06); }
.tl-title-icon { font-size: 2rem; margin-bottom: var(--space-xs); }
.tl-title-label { font-family: var(--font-display); font-size: 0.68rem; letter-spacing: 2px; text-transform: uppercase; color: var(--tl-mist); display: block; margin-bottom: 4px; }
.tl-title-value { font-family: var(--font-chinese-display); font-size: 1rem; color: var(--tl-deep-purple); }

/* ---- Chronicle ---- */
.tl-chronicle {
  padding: var(--space-xxl) 0;
  background: #f7f5f2;
}
.tl-chapter {
  max-width: 680px;
  margin: 0 auto var(--space-xl);
  padding: var(--space-lg);
  background: #fff;
  border-left: 3px solid var(--tl-amethyst);
}
.tl-chapter:last-child { margin-bottom: 0; }
.tl-chapter-num { font-family: var(--font-display); font-size: 2.5rem; color: rgba(123,79,191,0.1); float: left; line-height: 1; margin-right: var(--space-md); }
.tl-chapter-label { font-family: var(--font-display); font-size: 0.7rem; letter-spacing: 3px; text-transform: uppercase; color: var(--tl-amethyst); margin-bottom: 4px; }
.tl-chapter-title { font-family: var(--font-display); font-size: 1.2rem; color: var(--tl-char); margin-bottom: var(--space-sm); }
.tl-chapter-body { font-family: var(--font-body); font-size: 1rem; color: var(--text-secondary); line-height: 1.8; }
.tl-chapter-body strong { color: var(--tl-deep-purple); }

/* ---- Hub Grid ---- */
.tl-hub {
  padding: var(--space-xxl) 0;
  background: var(--tl-cream);
}
.tl-hub-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-md);
  max-width: 960px; margin: 0 auto;
}
.tl-hub-card {
  display: block; text-decoration: none;
  background: #fff;
  border: 1px solid rgba(74,45,122,0.06);
  border-radius: var(--radius-sm);
  padding: var(--space-lg) var(--space-md);
  text-align: center;
  transition: border-color 0.3s, box-shadow 0.3s;
}
.tl-hub-card:hover { border-color: var(--tl-amethyst); box-shadow: 0 4px 20px rgba(26,21,32,0.05); }
.tl-hub-card-icon { font-size: 2.4rem; margin-bottom: var(--space-sm); }
.tl-hub-card-title { font-family: var(--font-display); font-size: 1.05rem; color: var(--tl-char); margin-bottom: var(--space-xs); }
.tl-hub-card-desc { font-family: var(--font-body); font-size: 0.9rem; color: var(--text-secondary); line-height: 1.5; }

/* ---- Mobile ---- */
@media (max-width: 767px) {
  .tl-titles-grid { grid-template-columns: repeat(2, 1fr); }
  .tl-hub-grid { grid-template-columns: 1fr; }
  .tl-nav { padding: var(--space-xs) var(--space-sm); }
  .tl-chapter-num { float: none; display: block; margin-bottom: var(--space-sm); }
}