/* ==========================================================================
   Layout - Container, Grid System, Section Spacing, Flex Utilities
   ========================================================================== */

/* Container
   ========================================================================== */

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

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

.container--prose {
  max-width: 760px;
}

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

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

/* Section Spacing
   ========================================================================== */

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

.section--sm {
  padding-top: var(--space-2xl);
  padding-bottom: var(--space-2xl);
}

.section--lg {
  padding-top: 9rem;
  padding-bottom: 9rem;
}

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

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

.section--dark p {
  color: var(--text-on-dark-muted);
}

.section--dark .section-header__label {
  color: var(--color-secondary);
}

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

.section--gradient {
  background: linear-gradient(180deg, var(--bg-primary) 0%, var(--bg-secondary) 100%);
}

.section--gradient-dark {
  background: linear-gradient(180deg, var(--bg-dark) 0%, var(--color-primary-light) 100%);
  color: var(--text-on-dark);
}

/* Grid System
   ========================================================================== */

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

.grid-2 {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-lg);
}

.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-lg);
}

.grid-4 {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-lg);
}

.grid-5 {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: var(--space-lg);
}

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

/* Grid with custom gaps */
.grid--gap-xs { gap: var(--space-xs); }
.grid--gap-sm { gap: var(--space-sm); }
.grid--gap-md { gap: var(--space-md); }
.grid--gap-xl { gap: var(--space-xl); }
.grid--gap-2xl { gap: var(--space-2xl); }

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

/* Asymmetric grids */
.grid-sidebar {
  display: grid;
  grid-template-columns: 1fr var(--sidebar-width);
  gap: var(--space-2xl);
}

.grid-sidebar--reverse {
  display: grid;
  grid-template-columns: var(--sidebar-width) 1fr;
  gap: var(--space-2xl);
}

/* Split Layout (2-column text/image)
   ========================================================================== */

.split-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-2xl);
  align-items: center;
}

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

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

.split-layout--60-40 {
  grid-template-columns: 3fr 2fr;
}

.split-layout--40-60 {
  grid-template-columns: 2fr 3fr;
}

.split-layout__content {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}

.split-layout__media {
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.split-layout__media img {
  width: 100%;
  height: auto;
  object-fit: cover;
}

/* Grid Content (legacy compat) */
.grid-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-2xl);
  align-items: center;
}

.grid-content--reverse {
  direction: rtl;
}

.grid-content--reverse > * {
  direction: ltr;
}

/* Flex Utilities
   ========================================================================== */

.flex { display: flex; }
.flex-inline { display: inline-flex; }

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

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

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

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

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

.flex-col-center {
  display: flex;
  flex-direction: column;
  align-items: center;
}

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

.flex-gap-xs { gap: var(--space-xs); }
.flex-gap-sm { gap: var(--space-sm); }
.flex-gap-md { gap: var(--space-md); }
.flex-gap-lg { gap: var(--space-lg); }
.flex-gap-xl { gap: var(--space-xl); }

.flex-1 { flex: 1; }
.flex-shrink-0 { flex-shrink: 0; }

/* Spacing Utilities
   ========================================================================== */

.mt-0 { margin-top: 0; }
.mt-xs { margin-top: var(--space-xs); }
.mt-sm { margin-top: var(--space-sm); }
.mt-md { margin-top: var(--space-md); }
.mt-lg { margin-top: var(--space-lg); }
.mt-xl { margin-top: var(--space-xl); }
.mt-2xl { margin-top: var(--space-2xl); }
.mt-3xl { margin-top: var(--space-3xl); }

.mb-0 { margin-bottom: 0; }
.mb-xs { margin-bottom: var(--space-xs); }
.mb-sm { margin-bottom: var(--space-sm); }
.mb-md { margin-bottom: var(--space-md); }
.mb-lg { margin-bottom: var(--space-lg); }
.mb-xl { margin-bottom: var(--space-xl); }
.mb-2xl { margin-bottom: var(--space-2xl); }
.mb-3xl { margin-bottom: var(--space-3xl); }

.mx-auto { margin-left: auto; margin-right: auto; }

.pt-0 { padding-top: 0; }
.pb-0 { padding-bottom: 0; }
.p-sm { padding: var(--space-sm); }
.p-md { padding: var(--space-md); }
.p-lg { padding: var(--space-lg); }

/* Width Utilities
   ========================================================================== */

.w-full { width: 100%; }
.w-auto { width: auto; }
.max-w-sm { max-width: var(--container-sm); }
.max-w-md { max-width: var(--container-md); }
.max-w-lg { max-width: var(--container-lg); }
.max-w-xl { max-width: var(--container-xl); }

/* Visibility Utilities
   ========================================================================== */

.hidden {
  display: none !important;
}

.visible-desktop {
  display: block;
}

.visible-mobile {
  display: none;
}

/* Overflow
   ========================================================================== */

.overflow-hidden { overflow: hidden; }
.overflow-x-auto { overflow-x: auto; }
.overflow-y-auto { overflow-y: auto; }

/* Position Utilities
   ========================================================================== */

.relative { position: relative; }
.absolute { position: absolute; }
.sticky { position: sticky; top: 0; }