/* ============================================
   LAYOUT SYSTEM
   ============================================ */

/* ── Container ── */

.container {
  width: 100%;
  max-width: var(--container-xl);
  margin-left: auto;
  margin-right: auto;
  padding-left: var(--space-6);
  padding-right: var(--space-6);
}

.container--narrow { max-width: var(--container-lg); }
.container--wide   { max-width: var(--container-2xl); }
.container--full   { max-width: 100%; }

@media (max-width: 768px) {
  .container {
    padding-left: var(--space-4);
    padding-right: var(--space-4);
  }
}

/* ── Page Wrapper ── */

.page {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

.page__content {
  flex: 1;
  padding-top: var(--header-height);
}

/* ── Section ── */

.section {
  padding-top: var(--space-16);
  padding-bottom: var(--space-16);
}

.section--sm {
  padding-top: var(--space-10);
  padding-bottom: var(--space-10);
}

.section--lg {
  padding-top: var(--space-24);
  padding-bottom: var(--space-24);
}

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

.section--dark {
  position: relative;
  background:
    radial-gradient(ellipse at 20% 50%, rgba(0, 155, 222, 0.12) 0%, transparent 60%),
    radial-gradient(ellipse at 80% 50%, rgba(196, 30, 58, 0.08) 0%, transparent 60%),
    linear-gradient(135deg, #1B2A4A 0%, #111C33 100%);
  color: var(--color-text-inverse);
}

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

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

.section--dark .section__eyebrow {
  color: var(--color-red-light);
}

.section--dark .section__description {
  color: rgba(255, 255, 255, 0.7);
}

/* ── Dark Section Atmospheric Effects (DE-5) ── */

/* Dot grid overlay */
.section--dark::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    radial-gradient(circle, rgba(255, 255, 255, 0.04) 1px, transparent 1px);
  background-size: 24px 24px;
  pointer-events: none;
  z-index: 0;
  animation: grid-drift 60s linear infinite;
}

/* Scan line texture */
.section--dark::after {
  content: '';
  position: absolute;
  inset: 0;
  background: repeating-linear-gradient(
    0deg,
    transparent 0px,
    transparent 3px,
    rgba(255, 255, 255, 0.008) 3px,
    rgba(255, 255, 255, 0.008) 4px
  );
  pointer-events: none;
  z-index: 0;
}

/* Content above atmospheric overlays */
.section--dark > .container {
  position: relative;
  z-index: 1;
}

/* Adjacent dark sections — continuous zone with subtle divider */
.section--dark + .section--dark {
  border-top: 1px solid rgba(255, 255, 255, 0.06);
}

.section--dark .stat-card__number {
  color: var(--color-text-inverse);
  text-shadow: 0 0 30px rgba(0, 155, 222, 0.25), 0 0 60px rgba(0, 155, 222, 0.1);
}

.section--dark .stat-card__label {
  color: rgba(255, 255, 255, 0.6);
}

.section__header {
  margin-bottom: var(--space-10);
}

.section__eyebrow {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  font-weight: var(--weight-medium);
  text-transform: uppercase;
  letter-spacing: var(--tracking-widest);
  color: var(--color-red);
  margin-bottom: var(--space-3);
}

.section__title {
  margin-bottom: var(--space-4);
}

.section__description {
  max-width: 640px;
  font-size: var(--text-lg);
}

.text-center .section__description {
  margin-left: auto;
  margin-right: auto;
}

@media (max-width: 768px) {
  .section {
    padding-top: var(--space-10);
    padding-bottom: var(--space-10);
  }

  .section--lg {
    padding-top: var(--space-16);
    padding-bottom: var(--space-16);
  }
}

/* ── 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-sm { grid-template-columns: repeat(auto-fill, minmax(240px, 1fr)); }
.grid--auto-md { grid-template-columns: repeat(auto-fill, minmax(300px, 1fr)); }
.grid--auto-lg { grid-template-columns: repeat(auto-fill, minmax(360px, 1fr)); }

.grid--gap-sm  { gap: var(--space-4); }
.grid--gap-lg  { gap: var(--space-8); }
.grid--gap-xl  { gap: var(--space-12); }

/* ── Pillar Grid (3+2 centered) ── */

.pillar-grid {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: var(--space-8);
}

.pillar-grid > * {
  grid-column: span 2;
}

.pillar-grid > :nth-child(4) {
  grid-column: 2 / span 2;
}

.pillar-grid > :nth-child(5) {
  grid-column: 4 / span 2;
}

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

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

  .pillar-grid > *,
  .pillar-grid > :nth-child(4),
  .pillar-grid > :nth-child(5) {
    grid-column: span 1;
  }
}

@media (max-width: 640px) {
  .grid--2,
  .grid--3,
  .grid--4 {
    grid-template-columns: 1fr;
  }

  .pillar-grid {
    grid-template-columns: 1fr;
  }
}

/* ── Stats Grid ── */

.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
}

.stats-grid .stat-card {
  position: relative;
}

@media (min-width: 1025px) {
  .stats-grid .stat-card + .stat-card::before {
    content: '';
    position: absolute;
    left: 0;
    top: 20%;
    height: 60%;
    width: 1px;
    background-color: var(--color-border);
  }

  .section--dark .stats-grid .stat-card + .stat-card::before {
    background-color: rgba(255, 255, 255, 0.12);
  }
}

@media (max-width: 1024px) {
  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 480px) {
  .stats-grid {
    grid-template-columns: 1fr;
  }
}

/* ── Flexbox Layouts ── */

.flex             { display: flex; }
.flex--center     { align-items: center; justify-content: center; }
.flex--between    { align-items: center; justify-content: space-between; }
.flex--column     { flex-direction: column; }
.flex--wrap       { flex-wrap: wrap; }
.flex--gap-sm     { gap: var(--space-2); }
.flex--gap-md     { gap: var(--space-4); }
.flex--gap-lg     { gap: var(--space-6); }

/* ── Two-Column Layout ── */

.layout-sidebar {
  display: grid;
  grid-template-columns: 1fr 320px;
  gap: var(--space-10);
  align-items: start;
}

.layout-sidebar--reverse {
  grid-template-columns: 320px 1fr;
}

@media (max-width: 1024px) {
  .layout-sidebar,
  .layout-sidebar--reverse {
    grid-template-columns: 1fr;
  }
}