/* ============================================
   TAOQIMIAO — Layout System
   Containers, Grids, Responsive
   ============================================ */

/* ---- Container ---- */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--container-padding);
}

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

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

/* ---- Section ---- */
.section {
  padding: var(--space-20) 0;
}

.section--sm {
  padding: var(--space-12) 0;
}

.section--lg {
  padding: var(--space-32) 0;
}

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

.section--dark h1,
.section--dark h2,
.section--dark h3,
.section--dark h4,
.section--dark h5,
.section--dark h6 {
  color: var(--color-white);
}

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

.section--dark .section-label {
  color: var(--color-accent);
}

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

.section--accent-bg {
  background-color: var(--color-primary-50);
}

/* ---- Grid System ---- */
.grid {
  display: grid;
  gap: var(--space-8);
}

.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));
}

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

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

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

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

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

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

.items-center {
  align-items: center;
}

.gap-1 { gap: var(--space-1); }
.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); }

/* ---- Two Column Content Layout ---- */
.split-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-16);
  align-items: center;
}

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

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

/* ---- Page Header (Breadcrumb area) ---- */
.page-header {
  background: linear-gradient(135deg, var(--color-bg-dark) 0%, #243B1A 100%);
  padding: var(--space-24) 0 var(--space-16);
  text-align: center;
  position: relative;
  overflow: hidden;
}

.page-header::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.03'%3E%3Ccircle cx='30' cy='30' r='2'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
  pointer-events: none;
}

.page-header h1 {
  color: var(--color-white);
  font-size: var(--text-4xl);
  margin-bottom: var(--space-4);
}

.page-header p {
  color: var(--color-gray-300);
  font-size: var(--text-lg);
  max-width: 600px;
  margin: 0 auto;
}

/* ---- Breadcrumb ---- */
.breadcrumb {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-sm);
  color: var(--color-gray-400);
  margin-bottom: var(--space-6);
  justify-content: center;
}

.breadcrumb a {
  color: var(--color-accent);
  transition: color var(--transition-fast);
}

.breadcrumb a:hover {
  color: var(--color-accent-light);
}

.breadcrumb span {
  color: var(--color-gray-500);
}

/* ============================================
   RESPONSIVE BREAKPOINTS
   ============================================ */

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

  .split-layout {
    grid-template-columns: 1fr;
    gap: var(--space-8);
  }

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

/* Mobile */
@media (max-width: 768px) {
  .section {
    padding: var(--space-12) 0;
  }

  .section--lg {
    padding: var(--space-16) 0;
  }

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

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

  .page-header {
    padding: var(--space-16) 0 var(--space-10);
  }

  .page-header h1 {
    font-size: var(--text-3xl);
  }

  .hide-mobile {
    display: none !important;
  }
}

/* Small Mobile */
@media (max-width: 480px) {
  .container {
    padding: 0 var(--space-4);
  }
}

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