/* ═══════════════════════════════════════════════════════════
   LAYOUT.CSS — Grid, Containers, Spacing, Page Structure
═══════════════════════════════════════════════════════════ */

/* ── Canvas Background Layer ── */
#fluid-canvas {
  position: fixed;
  inset: 0;
  z-index: var(--z-canvas);
  width: 100%;
  height: 100%;
}

/* ── Page Wrapper ── */
.page-wrapper {
  position: relative;
  z-index: var(--z-content);
  min-height: 100vh;
}

/* ── Container ── */
.container {
  width: 100%;
  max-width: 1280px;
  margin-inline: auto;
  padding-inline: var(--space-xl);
}

.container--narrow {
  max-width: 900px;
}

.container--wide {
  max-width: 1440px;
}

/* ── Section ── */
.section {
  padding-block: var(--space-4xl);
}

.section--sm {
  padding-block: var(--space-2xl);
}

.section--lg {
  padding-block: 160px;
}

/* ── Section Header ── */
.section-header {
  margin-bottom: var(--space-3xl);
}

.section-header--center {
  text-align: center;
}

.section-label {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  margin-bottom: var(--space-md);
  color: var(--color-gold);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.section-label::before {
  content: '';
  display: block;
  width: 24px;
  height: 1px;
  background: currentColor;
}

.section-header--center .section-label::before {
  display: none;
}

.section-title {
  font-family: var(--font-display);
  font-size: clamp(2rem, 4vw, 3.5rem);
  font-weight: 700;
  line-height: 1;
  letter-spacing: -0.025em;
  margin-bottom: var(--space-lg);
}

.section-subtitle {
  font-size: 1.1rem;
  color: var(--color-text-muted);
  max-width: 560px;
  line-height: 1.7;
}

.section-header--center .section-subtitle {
  margin-inline: auto;
}

/* ── Grids ── */
.grid-2 {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-lg);
}

.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-lg);
}

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

.grid-auto {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--space-lg);
}

/* ── Flex Utilities ── */
.flex { display: flex; }
.flex-col { flex-direction: column; }
.items-center { align-items: center; }
.items-start { align-items: flex-start; }
.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); }

/* ── Divider ── */
.divider {
  width: 100%;
  height: 1px;
  background: linear-gradient(
    90deg,
    transparent 0%,
    var(--color-border) 30%,
    var(--color-border-bright) 50%,
    var(--color-border) 70%,
    transparent 100%
  );
  margin-block: var(--space-2xl);
}

/* ── Page Hero ── */
.page-hero {
  min-height: 60vh;
  display: flex;
  align-items: center;
  padding-block: calc(var(--space-4xl) + 80px) var(--space-4xl);
  position: relative;
  overflow: hidden;
}

.page-hero--full {
  min-height: 100vh;
}

/* ── Responsive Breakpoints ── */
@media (max-width: 1024px) {
  .container { padding-inline: var(--space-xl); }
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .grid-3 { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
  .container { padding-inline: var(--space-md); }
  .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
  .section { padding-block: var(--space-2xl); }
  .section--lg { padding-block: var(--space-3xl); }
}