/* base.css — Global body, backgrounds, shared utilities */

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-display);
  overflow-x: hidden;
}

/* ── Grid background ── */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  background-image:
    linear-gradient(rgba(77, 200, 240, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(77, 200, 240, 0.03) 1px, transparent 1px);
  background-size: 60px 60px;
  z-index: 0;
  pointer-events: none;
}

/* ── Noise overlay ── */
body::after {
  content: '';
  position: fixed;
  inset: 0;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='0.03'/%3E%3C/svg%3E");
  opacity: 0.4;
  z-index: 0;
  pointer-events: none;
}

section {
  position: relative;
  z-index: 1;
}

/* ── Shared layout ── */
.section-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--inner-pad);
}

.section-label {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 3px;
  text-transform: uppercase;
  color: var(--cyan);
  margin-bottom: 12px;
  display: flex;
  align-items: center;
  gap: 12px;
}

.section-label::before {
  content: '';
  display: block;
  width: 24px;
  height: 1px;
  background: var(--cyan);
  flex-shrink: 0;
}

.section-title {
  font-family: var(--font-display);
  font-size: clamp(1.8rem, 4vw, 3rem);
  font-weight: 800;
  color: var(--white);
  line-height: 1.1;
  margin-bottom: 16px;
}

.section-desc {
  font-size: 1rem;
  color: var(--muted);
  max-width: 480px;
  line-height: 1.7;
}

.divider {
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--border), transparent);
  margin: 0 var(--inner-pad);
  position: relative;
  z-index: 1;
}

/* ── Shared buttons ── */
.btn-primary {
  display: inline-block;
  background: linear-gradient(135deg, var(--cyan), #3ab0d8);
  color: #050810;
  font-family: var(--font-ui);
  font-weight: 700;
  font-size: 1rem;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  padding: 14px 36px;
  border-radius: var(--radius-sm);
  transition: box-shadow 0.2s, transform 0.15s;
}

.btn-primary:hover {
  box-shadow: 0 0 40px var(--cyan-glow), 0 8px 32px rgba(77, 200, 240, 0.3);
  transform: translateY(-2px);
}

.btn-ghost {
  display: inline-block;
  background: transparent;
  color: var(--text);
  font-family: var(--font-ui);
  font-weight: 600;
  font-size: 1rem;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  padding: 14px 36px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  transition: border-color 0.2s, color 0.2s;
}

.btn-ghost:hover {
  border-color: var(--cyan);
  color: var(--cyan);
}

/* ── Scroll reveal base state ── */
.reveal {
  opacity: 0;
  transform: translateY(32px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ── Scrollbar ── */
::-webkit-scrollbar { width: 4px; }
::-webkit-scrollbar-track { background: var(--bg); }
::-webkit-scrollbar-thumb { background: rgba(77, 200, 240, 0.3); border-radius: 2px; }