/* Headers of sections */
.section-header {
  margin-bottom: 4rem;
  max-width: 700px;
}

.section-header .subtitle {
  font-family: var(--font-mono);
  font-size: 0.875rem;
  color: var(--accent-neon);
  text-transform: uppercase;
  letter-spacing: 0.15em;
  margin-bottom: 0.75rem;
  display: block;
}

.section-header h2 {
  font-weight: 800;
  color: var(--text-primary);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.section-header h2::before {
  content: "|";
  color: var(--accent-blue);
  font-weight: 900;
  margin-right: 0.25rem;
}

.section-header p {
  margin-top: 1rem;
  color: var(--text-secondary);
  font-size: 1.125rem;
}

/* Card design with glassmorphism + glow border */
.card {
  background-color: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: 16px;
  padding: 2.25rem;
  position: relative;
  overflow: hidden;
  transition: transform 0.4s var(--ease-out-expo), 
              border-color 0.4s var(--ease-out-expo), 
              box-shadow 0.4s var(--ease-out-expo);
}

.card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: radial-gradient(800px circle at var(--mouse-x, 0) var(--mouse-y, 0), rgba(0, 212, 255, 0.04), transparent 40%);
  pointer-events: none;
  z-index: 1;
  opacity: 0;
  transition: opacity 0.5s;
}

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

.card:hover {
  transform: translateY(-5px);
  border-color: var(--border-glow-hover);
  box-shadow: 0 12px 30px -10px rgba(0, 212, 255, 0.12), 
              0 0 15px -3px rgba(37, 99, 235, 0.2);
}

/* Buttons style */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.875rem 2.25rem;
  border-radius: 9999px;
  font-weight: 600;
  font-size: 0.95rem;
  cursor: pointer;
  transition: all 0.3s var(--ease-out-expo);
  border: 1px solid transparent;
  gap: 0.5rem;
  position: relative;
  overflow: hidden;
}

.btn-primary {
  background: linear-gradient(135deg var(--in-oklch), var(--accent-blue) 0%, var(--accent-indigo) 100%);
  color: #fff;
  box-shadow: 0 4px 20px -5px rgba(37, 99, 235, 0.4);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 25px -3px rgba(0, 212, 255, 0.4);
  background: linear-gradient(135deg var(--in-oklch), var(--accent-blue-light) 0%, var(--accent-blue) 100%);
}

.btn-secondary {
  background: rgba(255, 255, 255, 0.03);
  color: var(--text-primary);
  border: 1px solid var(--border-subtle);
  backdrop-filter: blur(10px);
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.08);
  border-color: rgba(59, 130, 246, 0.3);
  color: #fff;
  transform: translateY(-2px);
}

/* Tech badge / pills */
.tech-badge {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  padding: 0.4rem 0.9rem;
  background-color: rgba(37, 99, 235, 0.05);
  border: 1px solid rgba(37, 99, 235, 0.15);
  color: var(--accent-blue-light);
  border-radius: 9999px;
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  transition: all 0.3s var(--ease-out-expo);
}

.tech-badge:hover {
  background-color: rgba(0, 212, 255, 0.08);
  border-color: var(--accent-neon);
  color: var(--accent-neon);
  box-shadow: 0 0 10px rgba(0, 212, 255, 0.15);
}

/* Stat card counters */
.stat-card {
  text-align: center;
  padding: 1.5rem 1rem;
}

.stat-number {
  font-size: clamp(2.5rem, 4vw + 0.5rem, 3.75rem);
  font-weight: 800;
  line-height: 1;
  margin-bottom: 0.5rem;
  font-family: var(--font-sans);
}

.stat-label {
  font-size: 0.875rem;
  color: var(--text-secondary);
  font-weight: 500;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

/* Scroll Indicator */
.scroll-indicator {
  position: absolute;
  bottom: 2rem;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
  color: var(--text-muted);
  font-size: 0.75rem;
  font-family: var(--font-mono);
  pointer-events: none;
}

.scroll-indicator .mouse {
  width: 24px;
  height: 40px;
  border: 2px solid var(--text-muted);
  border-radius: 12px;
  position: relative;
}

.scroll-indicator .mouse::after {
  content: "";
  position: absolute;
  top: 8px;
  left: 50%;
  transform: translateX(-50%);
  width: 4px;
  height: 8px;
  background-color: var(--accent-neon);
  border-radius: 2px;
  animation: scroll-wheel 1.6s infinite ease-in-out;
}

@keyframes scroll-wheel {
  0% {
    opacity: 0;
    top: 6px;
  }
  30% {
    opacity: 1;
  }
  100% {
    opacity: 0;
    top: 18px;
  }
}