/* ============================================
   ETC AdBlue — Layout System
   Container, Grid, Flex, Section, Spacing
   ============================================ */

/* ── Container ── */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin-left: auto;
  margin-right: auto;
  padding-left: var(--container-padding);
  padding-right: var(--container-padding);
}

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

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

.container--full {
  max-width: 100%;
  padding-left: 0;
  padding-right: 0;
}

/* ── Section ── */
.section {
  padding-top: var(--space-20);
  padding-bottom: var(--space-20);
}

.section--sm {
  padding-top: var(--space-12);
  padding-bottom: var(--space-12);
}

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

.section--gray {
  background-color: var(--color-gray-50);
}

.section--navy {
  background: linear-gradient(to bottom, 
    var(--color-white) 0%, 
    rgba(30, 41, 59, 0.88) 15%, 
    rgba(30, 41, 59, 0.88) 85%, 
    var(--color-gray-50) 100%
  ), url('../images/corporate/facility-1.webp') center/cover fixed;
  color: var(--color-white);
}

.section--partners {
  background: linear-gradient(to bottom, 
    var(--color-white) 0%, 
    rgba(30, 41, 59, 0.88) 15%, 
    rgba(30, 41, 59, 0.88) 85%, 
    var(--color-white) 100%
  ), url('../images/corporate/about-factory.webp') center/cover fixed;
  color: var(--color-white);
}

.section--partners h2,
.section--partners h3,
.section--partners h4 {
  color: var(--color-white);
}

.section--navy h2,
.section--navy h3,
.section--navy h4 {
  color: var(--color-white);
}

.section--navy p {
  color: var(--color-gray-300);
}

.section--primary {
  background-color: var(--color-primary);
  color: var(--color-white);
}

@media (max-width: 768px) {
  .section {
    padding-top: var(--space-12);
    padding-bottom: var(--space-12);
  }
  .section--lg {
    padding-top: var(--space-16);
    padding-bottom: var(--space-16);
  }
}

/* ── Section Header ── */
.section__header {
  text-align: center;
  max-width: 720px;
  margin-left: auto;
  margin-right: auto;
  margin-bottom: var(--space-12);
}

.section__header p {
  margin-left: auto;
  margin-right: auto;
}

/* ── 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 {
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
}

.grid--gap-sm {
  gap: var(--space-4);
}

.grid--gap-lg {
  gap: var(--space-8);
}

.grid--gap-xl {
  gap: var(--space-12);
}

/* Grid alignment */
.grid--center {
  align-items: center;
}

.grid--start {
  align-items: start;
}

/* ── Grid 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) {
  .grid--4,
  .grid--3,
  .grid--2 {
    grid-template-columns: 1fr;
  }
}

/* ── 2-Column Content Layout ── */
.layout-split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-12);
  align-items: center;
}

.layout-split--reverse {
  direction: rtl;
}

.layout-split--reverse > * {
  direction: ltr;
}

.layout-split--sidebar {
  grid-template-columns: 300px 1fr;
  align-items: start;
}

@media (max-width: 1024px) {
  .layout-split--sidebar {
    grid-template-columns: 260px 1fr;
    gap: var(--space-8);
  }
}

@media (max-width: 768px) {
  .layout-split,
  .layout-split--reverse,
  .layout-split--sidebar {
    grid-template-columns: 1fr;
    gap: var(--space-8);
    direction: ltr;
  }
}

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

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

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

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

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

.flex--gap-sm {
  gap: var(--space-2);
}

.flex--gap {
  gap: var(--space-4);
}

.flex--gap-lg {
  gap: var(--space-6);
}

/* ── Spacing Utilities ── */
.mt-auto { margin-top: auto; }
.mb-0 { margin-bottom: 0; }
.mb-2 { margin-bottom: var(--space-2); }
.mb-4 { margin-bottom: var(--space-4); }
.mb-6 { margin-bottom: var(--space-6); }
.mb-8 { margin-bottom: var(--space-8); }
.mb-12 { margin-bottom: var(--space-12); }

/* ── Visibility ── */
.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;
}

.hidden {
  display: none !important;
}

.desktop-only {
  display: block;
}

.mobile-only {
  display: none;
}

@media (max-width: 768px) {
  .desktop-only {
    display: none !important;
  }
  .mobile-only {
    display: block !important;
  }
}

@media (max-width: 1024px) {
  .desktop-lg-only {
    display: none !important;
  }
}