/* ═══════════════════════════════════════════════════════════════════════════
   LAYOUT.CSS — Grids, Containers & Responsive Breakpoints
   ═══════════════════════════════════════════════════════════════════════════ */

/* ── Container Variants ── */
.container {
  width: 100%;
  max-width: var(--max-width);
  margin-left: auto;
  margin-right: auto;
  padding-left: clamp(1rem, 4vw, 2rem);
  padding-right: clamp(1rem, 4vw, 2rem);
}

.container-wide {
  width: 100%;
  max-width: var(--max-width-wide);
  margin-left: auto;
  margin-right: auto;
  padding-left: clamp(1rem, 4vw, 2rem);
  padding-right: clamp(1rem, 4vw, 2rem);
}

.container-narrow {
  width: 100%;
  max-width: 820px;
  margin-left: auto;
  margin-right: auto;
  padding-left: clamp(1rem, 4vw, 2rem);
  padding-right: clamp(1rem, 4vw, 2rem);
}

/* ── Section Rhythm ── */
.section {
  position: relative;
  padding-top: clamp(3.5rem, 8vw, 6rem);
  padding-bottom: clamp(3.5rem, 8vw, 6rem);
  background-color: var(--bg-primary);
  transition: background-color 0.28s ease;
  overflow: hidden;
}

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

.section--hero {
  min-height: calc(100vh - var(--ticker-height));
  display: flex;
  align-items: center;
  justify-content: center;
  padding-top: calc(var(--nav-height) + var(--ticker-height) + 2rem);
  padding-bottom: clamp(3rem, 6vw, 5rem);
}

.section--page-hero {
  padding-top: calc(var(--nav-height) + var(--ticker-height) + 3rem);
  padding-bottom: clamp(2.5rem, 5vw, 4rem);
  background-color: var(--bg-secondary);
  border-bottom: 1px solid var(--border-default);
  text-align: center;
}

/* ── Responsive CSS Grid Utilities ── */
.grid {
  display: grid;
  gap: var(--space-lg);
}

.grid-2 {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-lg);
}

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

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

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

.grid-auto-fill {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: var(--space-lg);
}

/* ── Flexbox Utilities ── */
.flex {
  display: flex;
}

.flex-col {
  display: flex;
  flex-direction: column;
}

.flex-center {
  display: flex;
  align-items: center;
  justify-content: center;
}

.flex-between {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.flex-wrap {
  flex-wrap: wrap;
}

.gap-sm { gap: var(--space-sm); }
.gap-md { gap: var(--space-md); }
.gap-lg { gap: var(--space-lg); }
.gap-xl { gap: var(--space-xl); }

/* ── Media Queries (Mobile First) ── */
@media (min-width: 640px) {
  .grid-2 {
    grid-template-columns: repeat(2, 1fr);
  }
  .grid-4 {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 768px) {
  .grid-3 {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  .grid-3 {
    grid-template-columns: repeat(3, 1fr);
  }
  .grid-4 {
    grid-template-columns: repeat(4, 1fr);
  }
}

/* ── Footer Layout ── */
.site-footer {
  background-color: var(--bg-secondary);
  border-top: 1px solid var(--border-default);
  padding-top: clamp(3rem, 6vw, 4.5rem);
  padding-bottom: 2rem;
  position: relative;
  z-index: 10;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-2xl);
  margin-bottom: var(--space-2xl);
}

@media (min-width: 640px) {
  .footer-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  .footer-grid {
    grid-template-columns: 2fr 1fr 1fr 1.2fr;
  }
}

.footer-bottom {
  border-top: 1px solid var(--border-default);
  padding-top: 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 1rem;
  align-items: center;
  text-align: center;
  font-size: 0.85rem;
  color: var(--text-muted);
}

@media (min-width: 768px) {
  .footer-bottom {
    flex-direction: row;
    justify-content: space-between;
    text-align: left;
  }
}