/* Layout — Container, Grid, Section Spacing */

.container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--space-lg);
}

.section {
  padding: var(--space-4xl) 0;
}

.section-alt {
  background: var(--bg-secondary);
}

.section-header {
  text-align: center;
  margin-bottom: var(--space-3xl);
}

.section-label {
  display: inline-block;
  font-size: var(--font-size-xs);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 2px;
  color: var(--accent);
  margin-bottom: var(--space-md);
  opacity: 0.7;
}

.section-title {
  font-size: var(--font-size-3xl);
  margin-bottom: var(--space-md);
  letter-spacing: -0.02em;
}

.section-subtitle {
  font-size: var(--font-size-lg);
  color: var(--text-secondary);
  max-width: 600px;
  margin: 0 auto;
  line-height: 1.7;
}

/* Grid */
.grid {
  display: grid;
  gap: var(--space-xl);
}
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }
.grid-5 { grid-template-columns: repeat(5, 1fr); }

/* Flex utilities */
.flex { display: flex; }
.flex-col { flex-direction: column; }
.flex-wrap { flex-wrap: wrap; }
.items-center { align-items: center; }
.justify-center { justify-content: center; }
.justify-between { justify-content: space-between; }
.gap-sm { gap: var(--space-sm); }
.gap-md { gap: var(--space-md); }
.gap-lg { gap: var(--space-lg); }
.gap-xl { gap: var(--space-xl); }

/* Text alignment */
.text-center { text-align: center; }
.text-left { text-align: left; }

/* Spacing */
.mt-sm { margin-top: var(--space-sm); }
.mt-md { margin-top: var(--space-md); }
.mt-lg { margin-top: var(--space-lg); }
.mt-xl { margin-top: var(--space-xl); }
.mt-2xl { margin-top: var(--space-2xl); }
.mb-sm { margin-bottom: var(--space-sm); }
.mb-md { margin-bottom: var(--space-md); }
.mb-lg { margin-bottom: var(--space-lg); }
.mb-xl { margin-bottom: var(--space-xl); }
.mb-2xl { margin-bottom: var(--space-2xl); }

/* Sizing utilities */
.h-full { height: 100%; }
.w-narrow { max-width: 900px; margin-left: auto; margin-right: auto; }
.w-narrower { max-width: 700px; margin-left: auto; margin-right: auto; }
.w-medium { max-width: 800px; margin-left: auto; margin-right: auto; }
.w-tight { max-width: 600px; margin-left: auto; margin-right: auto; }

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

.hero-content {
  text-align: center;
  position: relative;
  z-index: 2;
  max-width: 780px;
  padding: var(--space-3xl) var(--space-lg);
}

.hero h1 {
  margin-bottom: var(--space-lg);
  letter-spacing: -0.03em;
}

.hero p {
  font-size: var(--font-size-lg);
  color: var(--text-secondary);
  margin-bottom: var(--space-xl);
  max-width: 640px;
  margin-left: auto;
  margin-right: auto;
  line-height: 1.7;
}

.hero-bg {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse at 25% 15%, rgba(0, 180, 216, 0.06) 0%, transparent 55%),
    radial-gradient(ellipse at 75% 85%, rgba(99, 102, 241, 0.04) 0%, transparent 55%);
  z-index: 0;
}

.hero-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,0.012) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.012) 1px, transparent 1px);
  background-size: 72px 72px;
  z-index: 1;
  mask-image: radial-gradient(ellipse at center, black 30%, transparent 75%);
  -webkit-mask-image: radial-gradient(ellipse at center, black 30%, transparent 75%);
}

/* Page hero (shorter, for subpages) */
.page-hero {
  padding: calc(var(--nav-height) + var(--space-4xl)) 0 var(--space-4xl);
  position: relative;
  overflow: hidden;
}

.page-hero .hero-bg,
.page-hero .hero-grid {
  position: absolute;
  inset: 0;
}

.page-hero .hero-content {
  position: relative;
  z-index: 2;
  text-align: center;
  max-width: 800px;
  margin: 0 auto;
  padding: 0 var(--space-lg);
}

.page-hero h1 {
  margin-bottom: var(--space-md);
}

.page-hero p {
  font-size: var(--font-size-lg);
  color: var(--text-secondary);
  max-width: 640px;
  margin: 0 auto;
  line-height: 1.7;
}

/* Reduce double-padding when section follows page-hero */
.page-hero + .section {
  padding-top: var(--space-3xl);
}
.page-hero + .section-alt {
  padding-top: var(--space-3xl);
}

/* Responsive */
@media (max-width: 900px) {
  .grid-3 { grid-template-columns: repeat(2, 1fr); }
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .grid-5 { grid-template-columns: repeat(2, 1fr); }
  .section { padding: var(--space-3xl) 0; }
}

@media (max-width: 600px) {
  .grid-2, .grid-3, .grid-4, .grid-5 {
    grid-template-columns: 1fr;
  }
  .container { padding: 0 var(--space-md); }
  .hero { min-height: 90vh; }
  .section-title { font-size: var(--font-size-2xl); }
}