/**
 * ADCAM DIGITAL — LAYOUT SYSTEM
 * css/layout.css
 */

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

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

.section {
  position: relative;
  padding-top: var(--section-padding-y);
  padding-bottom: var(--section-padding-y);
  overflow-x: clip;
}

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

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

.section--grid-light {
  background-color: var(--color-bg-primary);
  background-image: var(--gradient-grid-light);
}

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

.section-header--center {
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.section-header--center .lead,
.section-header--center .section-heading__subtitle {
  margin-left: auto;
  margin-right: auto;
}

.section-heading__title {
  font-family: var(--font-display);
  font-size: var(--text-h2);
  font-weight: var(--weight-bold);
  color: var(--color-text-heading);
  letter-spacing: var(--tracking-tight);
}

.section-heading__subtitle {
  font-size: var(--text-body-lg);
  line-height: var(--leading-relaxed);
  color: var(--color-text-secondary);
  max-width: 620px;
  margin-top: var(--space-3);
}

/* Grids */
.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); }

.layout-split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-12);
  align-items: start;
}

.layout-split--55-45 { grid-template-columns: 11fr 9fr; }
.layout-split--45-55 { grid-template-columns: 9fr 11fr; }
.layout-split--60-40 { grid-template-columns: 3fr 2fr; }
.layout-split--center { align-items: center; }

/* Utilities */
.stack {
  display: flex;
  flex-direction: column;
}
.stack--xs > * + * { margin-top: var(--space-2); }
.stack--sm > * + * { margin-top: var(--space-3); }
.stack--md > * + * { margin-top: var(--space-5); }
.stack--lg > * + * { margin-top: var(--space-8); }
.stack--xl > * + * { margin-top: var(--space-12); }

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

.divider {
  height: 1px;
  background: var(--color-border);
  border: none;
  margin: var(--space-6) 0;
}


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

@media (max-width: 860px) {
  .layout-split,
  .layout-split--55-45,
  .layout-split--45-55,
  .layout-split--60-40 {
    grid-template-columns: 1fr;
    gap: var(--space-8);
  }
}

@media (max-width: 768px) {
  .grid--3,
  .grid--4 { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 540px) {
  .grid--2,
  .grid--3,
  .grid--4 { grid-template-columns: 1fr; }
}