/* ================================================================
   「心中之城」活动官网 — 首页专属样式
   ================================================================ */

/* ==================== Hero ==================== */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  padding-top: var(--header-height);
}

.hero-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
}

.hero-bg-layer { position: absolute; inset: 0; }

.hero-bg-mountain {
  background:
    radial-gradient(ellipse at 50% 80%, rgba(201,168,76,0.12) 0%, transparent 50%),
    radial-gradient(ellipse at 20% 40%, rgba(201,168,76,0.06) 0%, transparent 40%),
    radial-gradient(ellipse at 80% 30%, rgba(201,168,76,0.06) 0%, transparent 40%),
    linear-gradient(180deg, #0f0f1a 0%, #1a1520 40%, #1a1a2e 70%, #0f0f1a 100%);
}

/* Subtle mountain silhouette via pseudo elements are handled in HTML */

.hero-bg-particles {
  background-image:
    radial-gradient(1px 1px at 10% 20%, rgba(201,168,76,0.3), transparent),
    radial-gradient(1px 1px at 30% 60%, rgba(201,168,76,0.2), transparent),
    radial-gradient(1px 1px at 50% 30%, rgba(201,168,76,0.25), transparent),
    radial-gradient(1px 1px at 70% 50%, rgba(201,168,76,0.2), transparent),
    radial-gradient(1px 1px at 90% 70%, rgba(201,168,76,0.15), transparent),
    radial-gradient(1px 1px at 25% 80%, rgba(201,168,76,0.2), transparent),
    radial-gradient(1px 1px at 60% 15%, rgba(201,168,76,0.3), transparent),
    radial-gradient(1px 1px at 85% 40%, rgba(201,168,76,0.2), transparent),
    radial-gradient(2px 2px at 45% 70%, rgba(201,168,76,0.15), transparent),
    radial-gradient(2px 2px at 15% 45%, rgba(201,168,76,0.12), transparent);
  animation: particles-drift 20s ease-in-out infinite alternate;
}

@keyframes particles-drift {
  0% { opacity: 0.6; transform: translateY(0); }
  100% { opacity: 1; transform: translateY(-8px); }
}

.hero-content {
  position: relative;
  z-index: 1;
  text-align: center;
  padding: 60px 24px;
  max-width: 800px;
}

.hero-badge {
  display: inline-block;
  padding: 8px 20px;
  border: 1px solid rgba(201,168,76,0.3);
  border-radius: 100px;
  font-size: 0.85rem;
  color: var(--color-gold-light);
  background: rgba(201,168,76,0.08);
  margin-bottom: 32px;
  letter-spacing: 0.05em;
}

.hero-title {
  margin-bottom: 24px;
}

.hero-title-main {
  display: block;
  font-family: var(--font-display);
  font-size: 4rem;
  font-weight: 900;
  letter-spacing: 0.12em;
  color: var(--color-gold);
  text-shadow: 0 0 60px rgba(201,168,76,0.3);
  line-height: 1.2;
}

.hero-title-sub {
  display: block;
  font-family: var(--font-display);
  font-size: 1.3rem;
  font-weight: 400;
  color: var(--color-text-secondary);
  margin-top: 12px;
  letter-spacing: 0.06em;
}

.hero-desc {
  font-size: 1.1rem;
  color: var(--color-text-secondary);
  line-height: 1.8;
  margin-bottom: 40px;
}

.hero-actions {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  margin-bottom: 56px;
  flex-wrap: wrap;
}

.hero-stats {
  display: flex;
  justify-content: center;
  gap: 48px;
  flex-wrap: wrap;
}

.hero-stat {
  text-align: center;
}

.hero-stat-number {
  display: block;
  font-family: var(--font-display);
  font-size: 2.8rem;
  font-weight: 700;
  color: var(--color-gold);
  line-height: 1.2;
}

.hero-stat-label {
  display: block;
  font-size: 0.85rem;
  color: var(--color-text-muted);
  margin-top: 4px;
}

.hero-scroll-hint {
  position: absolute;
  bottom: 32px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 1;
  color: var(--color-text-muted);
  font-size: 0.85rem;
  animation: bounce-down 2s ease-in-out infinite;
}

@keyframes bounce-down {
  0%, 100% { transform: translateX(-50%) translateY(0); opacity: 0.5; }
  50% { transform: translateX(-50%) translateY(8px); opacity: 1; }
}

/* ==================== Section Dark ==================== */
.section-dark {
  background: var(--color-bg-elevated);
  border-top: 1px solid var(--border-color);
  border-bottom: 1px solid var(--border-color);
}

/* ==================== Track Cards (extended) ==================== */
.track-card {
  position: relative;
  text-decoration: none;
  color: var(--color-text);
  overflow: hidden;
}

.track-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, transparent, var(--color-gold), transparent);
  opacity: 0;
  transition: opacity var(--transition);
}

.track-card:hover::before {
  opacity: 1;
}

.track-tag {
  display: inline-block;
  margin-top: 16px;
  padding: 4px 14px;
  font-size: 0.75rem;
  color: var(--color-gold-light);
  background: rgba(201,168,76,0.1);
  border: 1px solid rgba(201,168,76,0.2);
  border-radius: 100px;
}

/* Track-specific accent colors */
.track-card-lit:hover { border-color: #4a90d9; }
.track-card-lit:hover::before { background: linear-gradient(90deg, transparent, #4a90d9, transparent); }
.track-card-script:hover { border-color: #e85d75; }
.track-card-script:hover::before { background: linear-gradient(90deg, transparent, #e85d75, transparent); }
.track-card-create:hover { border-color: #4ecdc4; }
.track-card-create:hover::before { background: linear-gradient(90deg, transparent, #4ecdc4, transparent); }

/* ==================== About Grid ==================== */
.about-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  margin-bottom: 40px;
}

.about-card {
  text-align: center;
  padding: 32px 16px;
  background: var(--color-bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  transition: all var(--transition);
}

.about-card:hover {
  border-color: var(--color-gold-dim);
  transform: translateY(-2px);
}

.about-number {
  font-family: var(--font-display);
  font-size: 2.4rem;
  font-weight: 700;
  color: var(--color-gold);
  line-height: 1.2;
}

.about-unit {
  font-size: 1rem;
  font-weight: 400;
  color: var(--color-gold-light);
}

.about-label {
  font-size: 0.85rem;
  color: var(--color-text-secondary);
  margin-top: 8px;
}

.about-desc {
  max-width: 800px;
  margin: 0 auto;
}

.about-desc p {
  color: var(--color-text-secondary);
  font-size: 1rem;
  line-height: 1.9;
  text-indent: 2em;
  margin-bottom: 16px;
}

/* ==================== Announcement List ==================== */
.announcement-list {
  max-width: 700px;
  margin: 0 auto;
}

.announcement-item {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  padding: 20px;
  background: var(--color-bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  margin-bottom: 12px;
  transition: all var(--transition);
}

.announcement-item:hover {
  border-color: var(--color-gold-dim);
}

.announcement-item.pinned {
  border-left: 3px solid var(--color-gold);
}

.announcement-date {
  font-size: 0.8rem;
  color: var(--color-text-muted);
  white-space: nowrap;
  padding-top: 2px;
}

.announcement-content {
  flex: 1;
}

.announcement-content h4 {
  font-size: 1rem;
  margin-bottom: 4px;
  color: var(--color-text);
}

.announcement-content p {
  font-size: 0.9rem;
  color: var(--color-text-secondary);
  margin: 0;
}

.announcement-pin {
  color: var(--color-gold);
  font-size: 0.8rem;
}

/* ==================== Responsive ==================== */
@media (max-width: 768px) {
  .hero { min-height: 90vh; }

  .hero-title-main {
    font-size: 2.4rem;
    letter-spacing: 0.08em;
  }

  .hero-title-sub {
    font-size: 1rem;
  }

  .hero-desc {
    font-size: 0.95rem;
  }

  .hero-stats {
    gap: 24px;
  }

  .hero-stat-number {
    font-size: 2rem;
  }

  .about-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .about-number {
    font-size: 1.8rem;
  }

  .about-desc p {
    text-indent: 1.5em;
  }
}

@media (min-width: 769px) and (max-width: 1024px) {
  .hero-title-main { font-size: 3.2rem; }
}