/* ============================================================
   index.css — Home page styles (hero, stats, features, activity)
   ============================================================ */

/* ---- Hero ---- */
.hero {
  min-height: calc(100vh - var(--nav-height));
  display: flex;
  align-items: center;
  position: relative;
  overflow: hidden;
  background: linear-gradient(135deg, var(--color-bg-primary) 0%, var(--color-bg-secondary) 100%);
}

/* Animated grid background (#2) */
.hero::before {
  content: '';
  position: absolute;
  inset: -100%;
  background-image:
    linear-gradient(rgba(22, 158, 217, 0.13) 1px, transparent 1px),
    linear-gradient(90deg, rgba(22, 158, 217, 0.13) 1px, transparent 1px);
  background-size: 48px 48px;
  pointer-events: none;
  animation: gridPan 20s linear infinite;
}

@keyframes gridPan {
  0%   { transform: translate(0, 0); }
  100% { transform: translate(48px, 48px); }
}

.hero::after {
  content: '';
  position: absolute;
  top: -200px;
  right: -200px;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(22, 158, 217, 0.1) 0%, transparent 70%);
  pointer-events: none;
  animation: glowPulse 6s ease-in-out infinite;
}

@keyframes glowPulse {
  0%, 100% { opacity: 0.6; transform: scale(1); }
  50%       { opacity: 1;   transform: scale(1.08); }
}

/* Particle canvas (#1) */
#hero-canvas {
  position: absolute;
  inset: 0;
  pointer-events: none;
  z-index: 0;
}

/* ---- Become The Alpha headline animation ---- */
#hero-headline {
  display: flex;
  align-items: baseline;
  flex-wrap: nowrap;
  gap: 0;
  white-space: nowrap;
  line-height: 1.15;
  font-size: clamp(2rem, 5vw, 3.25rem);
  margin-bottom: 20px;
}

/* The blue first-letters */
#hero-headline .hl {
  color: var(--color-highlight);
  font-weight: 700;
  display: inline-block;
  transition: transform 0.7s cubic-bezier(0.4, 0, 0.2, 1);
}

/* The white trailing letters */
#hero-headline .ht {
  color: var(--color-text-primary);
  display: inline-block;
  overflow: hidden;
  max-width: 10em;
  opacity: 1;
  transition:
    max-width 2s cubic-bezier(0.4, 0, 0.2, 1),
    opacity   1.5s ease;
  vertical-align: baseline;
}

/* Each word wrapper */
#hero-headline .hw {
  display: inline-flex;
  align-items: baseline;
}

/* Spaces between words */
#hero-headline .hw-space {
  display: inline-block;
  width: 0.45em;
  transition: width 2s cubic-bezier(0.4, 0, 0.2, 1), opacity 1.5s ease;
}

/* Collapsed state */
#hero-headline.bta-mode .ht {
  max-width: 0;
  opacity: 0;
}

#hero-headline.bta-mode .hw-space {
  width: 0.12em;
}

.hero-content {
  position: relative;
  z-index: 1;
  max-width: 720px;
}

.hero-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(59, 130, 246, 0.12);
  border: 1px solid rgba(59, 130, 246, 0.25);
  color: var(--color-highlight);
  padding: 6px 14px;
  border-radius: 20px;
  font-size: 0.8rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: 24px;
}

.hero h1 {
  font-size: clamp(2rem, 5vw, 3.25rem);
  font-weight: 700;
  line-height: 1.15;
  margin-bottom: 20px;
  color: var(--color-text-primary);
}

.hero h1 span {
  color: var(--color-highlight);
}

.hero p {
  font-size: 1.15rem;
  color: var(--color-text-secondary);
  line-height: 1.7;
  margin-bottom: 36px;
  max-width: 560px;
}

.hero-actions {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

/* ---- Stats Bar ---- */
.stats-bar {
  background: var(--color-bg-secondary);
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
  padding: 32px 0;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.stat-tile {
  text-align: center;
  padding: 20px;
  border-right: 1px solid var(--color-border);
}

.stat-tile:last-child {
  border-right: none;
}

.stat-number {
  font-family: var(--font-heading);
  font-size: 2.5rem;
  font-weight: 700;
  color: var(--color-highlight);
  line-height: 1;
  margin-bottom: 8px;
}

.stat-label {
  font-size: 0.85rem;
  color: var(--color-text-secondary);
  font-weight: 500;
}

/* ---- Feature Cards ---- */
.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.feature-card {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 32px;
  text-decoration: none;
  color: inherit;
  display: block;
  transition: all var(--transition);
  position: relative;
  overflow: hidden;
}

.feature-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--color-accent), var(--color-highlight));
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.3s ease;
}

.feature-card:hover::before {
  transform: scaleX(1);
}

.feature-card:hover {
  border-color: rgba(59, 130, 246, 0.4);
  box-shadow: var(--shadow-card);
  transform: translateY(-4px);
  color: inherit;
}

.feature-icon {
  width: 56px;
  height: 56px;
  background: rgba(59, 130, 246, 0.12);
  border: 1px solid rgba(59, 130, 246, 0.2);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.4rem;
  color: var(--color-highlight);
  margin-bottom: 20px;
}

.feature-card h3 {
  font-size: 1.15rem;
  font-weight: 700;
  margin-bottom: 10px;
  color: var(--color-text-primary);
}

.feature-card p {
  font-size: 0.9rem;
  color: var(--color-text-secondary);
  line-height: 1.6;
  margin-bottom: 20px;
}

.feature-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--color-highlight);
}

/* ---- Activity Feed ---- */
.activity-section {
  background: var(--color-bg-secondary);
  padding: 60px 0;
}

.activity-timeline {
  display: flex;
  flex-direction: column;
  gap: 0;
  position: relative;
}

.activity-timeline::before {
  content: '';
  position: absolute;
  left: 19px;
  top: 24px;
  bottom: 24px;
  width: 2px;
  background: linear-gradient(180deg, var(--color-highlight) 0%, transparent 100%);
  opacity: 0.3;
}

.activity-item {
  display: flex;
  gap: 20px;
  padding: 18px 0;
  border-bottom: 1px solid var(--color-border);
  position: relative;
}

.activity-item:last-child {
  border-bottom: none;
}

.activity-dot {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.85rem;
  flex-shrink: 0;
  position: relative;
  z-index: 1;
}

.activity-content {
  flex: 1;
  padding-top: 8px;
}

.activity-content p {
  font-size: 0.9rem;
  color: var(--color-text-primary);
  margin-bottom: 4px;
}

.activity-content time {
  font-size: 0.8rem;
  color: var(--color-text-secondary);
}

@media (max-width: 768px) {
  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .stat-tile {
    border-right: none;
    border-bottom: 1px solid var(--color-border);
  }
  .stat-tile:last-child { border-bottom: none; }
  .features-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 480px) {
  .hero {
    min-height: auto;
    padding: 60px 0;
  }
  .hero h1 {
    font-size: 1.75rem;
  }
  .stats-grid {
    grid-template-columns: 1fr 1fr;
  }
}