/* ============================================
   AlStableCoin — Home Page Styles
   ============================================ */

/* --- Hero --- */
.hero {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: var(--space-2xl) var(--space-xl);
  padding-top: calc(var(--nav-height) + var(--space-2xl));
  position: relative;
  z-index: 1;
  overflow: hidden;
}

.hero-brand {
  font-size: var(--text-sm);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.2em;
  margin-bottom: var(--space-lg);
}

.hero-brand::after {
  content: "";
  display: block;
  width: 40px;
  height: 2px;
  background: var(--gradient-primary);
  margin: var(--space-sm) auto 0;
  border-radius: 1px;
}

.hero-title {
  font-size: clamp(2.5rem, 7vw, 5rem);
  font-weight: 800;
  letter-spacing: -0.04em;
  line-height: 1.1;
  margin-bottom: var(--space-md);
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  word-break: break-word;
}

.hero-subtitle {
  font-size: var(--text-lg);
  color: var(--text-secondary);
  max-width: 640px;
  line-height: 1.8;
  margin-bottom: var(--space-xl);
  padding: 0 var(--space-md);
}

.hero-actions {
  display: flex;
  gap: var(--space-md);
  flex-wrap: wrap;
  justify-content: center;
}

/* --- Hero Stats --- */
.hero-stats {
  display: flex;
  align-items: center;
  gap: var(--space-lg);
  margin-top: var(--space-xl);
  padding: var(--space-md) var(--space-xl);
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 16px;
  backdrop-filter: blur(10px);
  flex-wrap: wrap;
  justify-content: center;
  max-width: 100%;
}

.hero-stat {
  text-align: center;
  padding: 0 var(--space-md);
}

.hero-stat-num {
  font-family: var(--font-mono);
  font-size: var(--text-2xl);
  font-weight: 700;
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  display: block;
}

.hero-stat-label {
  font-size: var(--text-xs);
  color: var(--text-dim);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-top: 2px;
  display: block;
}

.hero-stat-divider {
  width: 1px;
  height: 36px;
  background: var(--border-color);
}

/* --- Scroll indicator --- */
.scroll-indicator {
  position: absolute;
  bottom: var(--space-xl);
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-sm);
  opacity: 0.45;
  animation: scrollBounce 2s ease-in-out infinite;
}

.scroll-indicator span {
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: var(--text-dim);
}

.scroll-indicator .scroll-line {
  width: 1px;
  height: 40px;
  background: var(--gradient-primary);
  border-radius: 1px;
}

@keyframes scrollBounce {
  0%, 100% { transform: translateX(-50%) translateY(0); }
  50%      { transform: translateX(-50%) translateY(8px); }
}

/* ============================================
   Formula Showcase
   ============================================ */
.formula-showcase {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--space-lg);
}

.formula-showcase .formula-card {
  text-align: center;
  padding: var(--space-xl);
}

.formula-showcase .formula-card .formula-label {
  font-size: var(--text-xs);
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: var(--accent-light);
  margin-bottom: var(--space-md);
  font-weight: 600;
}

.formula-showcase .formula-card .formula-main {
  margin-bottom: var(--space-md);
  overflow-x: auto;
}

.formula-showcase .formula-card .formula-desc {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.7;
  max-width: 480px;
  margin: 0 auto;
}

/* ============================================
   Metrics
   ============================================ */
.metrics-section {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 20px;
  padding: var(--space-xl);
  backdrop-filter: blur(10px);
}

.metrics-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-lg);
}

.metric-item {
  text-align: center;
  padding: var(--space-md);
  border-radius: 12px;
  transition: all var(--transition-smooth);
}

.metric-item:hover {
  background: rgba(240, 165, 0, 0.04);
  transform: translateY(-2px);
}

.metric-value {
  font-size: var(--text-3xl);
  font-weight: 700;
  font-family: var(--font-mono);
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: var(--space-xs);
  word-break: break-all;
}

.metric-label {
  font-size: var(--text-xs);
  color: var(--text-dim);
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

/* ============================================
   Reveal Animations
   ============================================ */
[data-reveal] {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.8s cubic-bezier(0.4, 0, 0.2, 1),
              transform 0.8s cubic-bezier(0.4, 0, 0.2, 1);
}

[data-reveal].revealed {
  opacity: 1;
  transform: translateY(0);
}

[data-reveal-delay="1"] { transition-delay: 0.1s; }
[data-reveal-delay="2"] { transition-delay: 0.2s; }
[data-reveal-delay="3"] { transition-delay: 0.3s; }
[data-reveal-delay="4"] { transition-delay: 0.4s; }

/* ============================================
   Responsive — 768px
   ============================================ */
@media (max-width: 768px) {
  .hero {
    min-height: 90vh;
    padding: calc(var(--nav-height) + var(--space-xl)) var(--space-lg) var(--space-lg);
  }

  .hero-brand {
    font-size: 0.7rem;
    margin-bottom: var(--space-md);
  }

  .hero-subtitle {
    font-size: 0.95rem;
    padding: 0;
  }

  .hero-stats {
    gap: var(--space-md);
    padding: var(--space-md);
  }

  .hero-stat-divider {
    display: none;
  }

  .hero-stat-num {
    font-size: var(--text-xl);
  }

  .formula-showcase {
    grid-template-columns: 1fr;
  }

  .formula-showcase .formula-card {
    padding: var(--space-lg);
  }

  .metrics-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-md);
  }

  .metric-value {
    font-size: 1.5rem;
  }

  .scroll-indicator {
    bottom: var(--space-md);
  }
}

/* ============================================
   Responsive — 480px
   ============================================ */
@media (max-width: 480px) {
  .hero {
    min-height: 85vh;
    padding: calc(var(--nav-height) + var(--space-lg)) var(--space-md) var(--space-lg);
  }

  .hero-actions {
    flex-direction: column;
    width: 100%;
  }

  .hero-actions .btn {
    width: 100%;
    justify-content: center;
    max-width: 100%;
  }

  .hero-stats {
    flex-direction: column;
    gap: var(--space-sm);
  }

  .metrics-grid {
    grid-template-columns: 1fr 1fr;
    gap: var(--space-sm);
  }

  .metrics-section {
    padding: var(--space-lg);
  }

  .metric-value {
    font-size: 1.3rem;
  }
}