/* ═══════════════════════════════════════════════════════════════
   LAYOUT SYSTEM
   Container, Grid, Section & Responsive Utilities
   ═══════════════════════════════════════════════════════════════ */

/* ── Containers ── */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin-inline: auto;
  padding-inline: var(--space-6);
}

.container--wide {
  max-width: var(--container-wide);
}

.container--narrow {
  max-width: var(--container-narrow);
}

/* ── Sections ── */
.section {
  padding-block: var(--section-padding);
  position: relative;
}

.section--sm {
  padding-block: clamp(1.5rem, 3vw, 2.5rem);
}

.section--lg {
  padding-block: clamp(3rem, 6vw, 5.5rem);
}

.section--dark {
  background-color: var(--bg-dark);
  color: var(--text-inverse);
}

.section--dark h1,
.section--dark h2,
.section--dark h3,
.section--dark h4 {
  color: var(--text-inverse);
}

.section--dark p {
  color: rgba(255, 255, 255, 0.8);
}

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

.section--gradient {
  background: linear-gradient(180deg, var(--bg-primary) 0%, var(--bg-secondary) 100%);
}

.section--gradient-dark {
  background: linear-gradient(180deg, var(--color-1e) 0%, var(--color-1d) 50%, var(--color-1) 100%);
  color: var(--text-inverse);
}

.section--gradient-dark h1,
.section--gradient-dark h2,
.section--gradient-dark h3 {
  color: var(--text-inverse);
}

/* ── Section Header ── */
.section-header {
  text-align: center;
  max-width: 700px;
  margin-inline: auto;
  margin-bottom: var(--space-8);
}

.section-header h2 {
  font-size: var(--text-4xl);
  margin-bottom: var(--space-4);
}

.section-header p {
  font-size: var(--text-lg);
  color: var(--text-secondary);
  margin-inline: auto;
}

.section--dark .section-header p,
.section--gradient-dark .section-header p {
  color: rgba(255, 255, 255, 0.75);
}

.section-label {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-sm);
  font-weight: var(--weight-semibold);
  color: var(--brand-accent);
  text-transform: uppercase;
  letter-spacing: var(--tracking-wider);
  margin-bottom: var(--space-4);
}

.section--dark .section-label,
.section--gradient-dark .section-label {
  color: var(--color-4c);
}

/* ── Grid System ── */
.grid {
  display: grid;
  gap: var(--space-6);
}

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

.grid-auto-fill {
  grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
}

/* ── Flex Utilities ── */
.flex         { display: flex; }
.flex-col     { flex-direction: column; }
.flex-wrap    { flex-wrap: wrap; }
.items-center { align-items: center; }
.items-start  { align-items: flex-start; }
.justify-center  { justify-content: center; }
.justify-between { justify-content: space-between; }
.gap-2  { gap: var(--space-2); }
.gap-3  { gap: var(--space-3); }
.gap-4  { gap: var(--space-4); }
.gap-6  { gap: var(--space-6); }
.gap-8  { gap: var(--space-8); }
.gap-10 { gap: var(--space-10); }
.gap-12 { gap: var(--space-12); }

/* ── Text Alignment ── */
.text-center { text-align: center; }
.text-left   { text-align: left; }
.text-right  { text-align: right; }
.mx-auto     { margin-inline: auto; }

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

@media (max-width: 768px) {
  :root {
    --nav-height: 64px;
    --topbar-height: 36px;
  }

  .container {
    padding-inline: var(--space-4);
  }

  .grid-4,
  .grid-3,
  .grid-2 {
    grid-template-columns: 1fr;
  }

  .section-header {
    margin-bottom: var(--space-6);
  }

  .section-header h2 {
    font-size: var(--text-3xl);
    letter-spacing: -0.02em;
  }

  .text-mobile-balance {
    text-wrap: balance;
  }

  .grid-mobile-1 { grid-template-columns: 1fr !important; }
  .grid-mobile-2 { grid-template-columns: repeat(2, 1fr) !important; }
}

@media (max-width: 640px) {
  .grid-2 { grid-template-columns: 1fr; }
}

@media (max-width: 480px) {
  .container { padding-inline: var(--space-4); }

  .section {
    padding-block: var(--space-8);
  }

  .section--lg {
    padding-block: var(--space-10);
  }

  .section-header {
    margin-bottom: var(--space-6);
  }

  .section-header h2 {
    font-size: var(--text-2xl);
  }
}

@media (min-width: 769px) {
  .hide-desktop { display: none !important; }
}