/* ============================================================
   ELYSIAN FALSE CEILING — LAYOUT
   Container, section wrappers, grid utilities
   Section D.4, D.7
   ============================================================ */


/* ──────────────────────────────────────────
   CONTAINER
   Max 1280px, centered, 24px side padding
────────────────────────────────────────── */

.container {
  width: 100%;
  max-width: var(--container-max);
  margin-inline: auto;
  padding-inline: var(--container-padding);
}

/* Narrow container for blog articles, centered content */
.container--narrow {
  max-width: 740px;
  margin-inline: auto;
  padding-inline: var(--container-padding);
}

/* Wide container — full width with small padding only */
.container--wide {
  width: 100%;
  max-width: 1440px;
  margin-inline: auto;
  padding-inline: var(--container-padding);
}


/* ──────────────────────────────────────────
   SECTION BASE
────────────────────────────────────────── */

.section {
  padding-block: var(--section-pad-v);
  position: relative;
}


/* ──────────────────────────────────────────
   SECTION VARIANTS (Section D.9 Component 4)
────────────────────────────────────────── */

/* White background, dark text */
.section-light {
  background-color: var(--color-secondary);
  color: var(--color-text-primary);
}

/* Warm off-white background, dark text */
.section-surface {
  background-color: var(--color-surface);
  color: var(--color-text-primary);
}

/* Dark charcoal background, light text */
.section-dark {
  background-color: var(--color-primary);
  color: var(--color-text-light);
}


/* ──────────────────────────────────────────
   SECTION HEADER
   Eyebrow + H2 + optional subtitle, centered or left
────────────────────────────────────────── */

.section-header {
  margin-bottom: var(--space-12);
}

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

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

.section-title {
  font-family: var(--font-heading);
  font-size: var(--text-h2);
  font-weight: 500;
  line-height: 1.2;
  color: inherit;
  margin-bottom: var(--space-4);
}

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

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

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


/* ──────────────────────────────────────────
   GRID UTILITIES
────────────────────────────────────────── */

/* Generic auto-fill responsive grid */
.grid {
  display: grid;
  gap: var(--space-8);
}

/* 3-column desktop, 2-column tablet, 1-column mobile */
.grid-3 {
  display: grid;
  gap: var(--space-8);
  grid-template-columns: repeat(1, 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);
  }
}

/* 2-column grid */
.grid-2 {
  display: grid;
  gap: var(--space-8);
  grid-template-columns: 1fr;
}

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

/* 4-column grid (areas list, etc.) */
.grid-4 {
  display: grid;
  gap: var(--space-4);
  grid-template-columns: repeat(2, 1fr);
}

@media (min-width: 768px) {
  .grid-4 {
    grid-template-columns: repeat(3, 1fr);
  }
}

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


/* ──────────────────────────────────────────
   FLEX UTILITIES
────────────────────────────────────────── */

.flex        { display: flex; }
.flex-center { display: flex; align-items: center; justify-content: center; }
.flex-between{ display: flex; align-items: center; justify-content: space-between; }
.flex-col    { display: flex; flex-direction: column; }
.flex-wrap   { flex-wrap: wrap; }
.gap-4       { gap: var(--space-4); }
.gap-6       { gap: var(--space-6); }
.gap-8       { gap: var(--space-8); }


/* ──────────────────────────────────────────
   TWO-COLUMN ALTERNATING (Why Choose section)
────────────────────────────────────────── */

.alternating-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-16);
}

@media (min-width: 1024px) {
  .alternating-grid {
    grid-template-columns: 1fr 1fr;
    align-items: center;
    gap: var(--space-20);
  }

  /* Reverse layout for odd items (image right → image left) */
  .alternating-grid .alt-item:nth-child(even) .alt-image {
    order: -1;
  }
}

.alt-item {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-8);
  align-items: center;
}

@media (min-width: 1024px) {
  .alt-item {
    grid-template-columns: 1fr 1fr;
  }
}

.alt-content {}

.alt-image {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  aspect-ratio: 4/3;
  background-color: var(--color-surface);
}

.alt-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 1;
}


/* ──────────────────────────────────────────
   SPACER UTILITIES
────────────────────────────────────────── */

.mt-4  { margin-top: var(--space-4); }
.mt-6  { margin-top: var(--space-6); }
.mt-8  { margin-top: var(--space-8); }
.mt-10 { margin-top: var(--space-10); }
.mt-12 { margin-top: var(--space-12); }
.mb-4  { margin-bottom: var(--space-4); }
.mb-6  { margin-bottom: var(--space-6); }
.mb-8  { margin-bottom: var(--space-8); }
.mb-10 { margin-bottom: var(--space-10); }
.mb-12 { margin-bottom: var(--space-12); }


/* ──────────────────────────────────────────
   VISIBILITY UTILITIES
────────────────────────────────────────── */

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.hide-mobile {
  display: none;
}

@media (min-width: 768px) {
  .hide-mobile {
    display: revert;
  }
}

.hide-desktop {
  display: revert;
}

@media (min-width: 1024px) {
  .hide-desktop {
    display: none;
  }
}


/* ──────────────────────────────────────────
   TEXT ALIGNMENT UTILITIES
────────────────────────────────────────── */

.text-left   { text-align: left; }
.text-center { text-align: center; }
.text-right  { text-align: right; }

@media (max-width: 767px) {
  .text-center-mobile { text-align: center; }
}


/* ──────────────────────────────────────────
   DIVIDER — section separator
────────────────────────────────────────── */

.section-divider {
  position: absolute;
  bottom: -1px;
  left: 0;
  width: 100%;
  overflow: hidden;
  line-height: 0;
  z-index: var(--z-raised);
}

.section-divider svg {
  display: block;
  width: 100%;
  height: auto;
}


/* ──────────────────────────────────────────
   CTA GROUP (pair of buttons side by side)
────────────────────────────────────────── */

.cta-group {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-4);
  align-items: center;
}

.cta-group--center {
  justify-content: center;
}

@media (max-width: 479px) {
  .cta-group {
    flex-direction: column;
    align-items: stretch;
  }

  .cta-group .btn {
    text-align: center;
    width: 100%;
  }
}