/* ===== Layout System ===== */

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

@media (min-width: 1024px) {
  .container {
    padding-left: var(--container-padding-lg);
    padding-right: var(--container-padding-lg);
  }
}

/* Container Variants */
.container-narrow {
  max-width: 900px;
}

.container-wide {
  max-width: 1536px;
}

.container-fluid {
  max-width: 100%;
}

/* Section Spacing */
section {
  padding: var(--spacing-2xl) 0;
}

@media (min-width: 768px) {
  section {
    padding: var(--spacing-3xl) 0;
  }
}

@media (min-width: 1024px) {
  section {
    padding: var(--spacing-4xl) 0;
  }
}

/* Section Variants */
.section-sm {
  padding: var(--spacing-xl) 0;
}

.section-lg {
  padding: var(--spacing-4xl) 0;
}

@media (min-width: 1024px) {
  .section-lg {
    padding: 8rem 0;
  }
}

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

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

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

/* Grid Columns */
.grid-cols-1 {
  grid-template-columns: repeat(1, 1fr);
}

.grid-cols-2 {
  grid-template-columns: repeat(2, 1fr);
}

.grid-cols-3 {
  grid-template-columns: repeat(3, 1fr);
}

.grid-cols-4 {
  grid-template-columns: repeat(4, 1fr);
}

/* Responsive Grid */
@media (max-width: 767px) {
  .grid-cols-2,
  .grid-cols-3,
  .grid-cols-4 {
    grid-template-columns: 1fr;
  }
}

@media (min-width: 768px) and (max-width: 1023px) {
  .grid-cols-3,
  .grid-cols-4 {
    grid-template-columns: repeat(2, 1fr);
  }
}

/* Auto-fit Grid (responsive by nature) */
.grid-auto-fit {
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
}

.grid-auto-fit-sm {
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
}

.grid-auto-fit-lg {
  grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
}

/* Flexbox System */
.flex {
  display: flex;
}

.flex-row {
  flex-direction: row;
}

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

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

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

/* Flex Alignment */
.items-start {
  align-items: flex-start;
}

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

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

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

.justify-start {
  justify-content: flex-start;
}

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

.justify-end {
  justify-content: flex-end;
}

.justify-between {
  justify-content: space-between;
}

.justify-around {
  justify-content: space-around;
}

/* Flex Gap */
.gap-xs {
  gap: var(--spacing-xs);
}

.gap-sm {
  gap: var(--spacing-sm);
}

.gap-md {
  gap: var(--spacing-md);
}

.gap-lg {
  gap: var(--spacing-lg);
}

.gap-xl {
  gap: var(--spacing-xl);
}

/* Spacing Utilities */
.mt-0 { margin-top: 0; }
.mt-xs { margin-top: var(--spacing-xs); }
.mt-sm { margin-top: var(--spacing-sm); }
.mt-md { margin-top: var(--spacing-md); }
.mt-lg { margin-top: var(--spacing-lg); }
.mt-xl { margin-top: var(--spacing-xl); }
.mt-2xl { margin-top: var(--spacing-2xl); }

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

.pt-0 { padding-top: 0; }
.pt-xs { padding-top: var(--spacing-xs); }
.pt-sm { padding-top: var(--spacing-sm); }
.pt-md { padding-top: var(--spacing-md); }
.pt-lg { padding-top: var(--spacing-lg); }
.pt-xl { padding-top: var(--spacing-xl); }
.pt-2xl { padding-top: var(--spacing-2xl); }

.pb-0 { padding-bottom: 0; }
.pb-xs { padding-bottom: var(--spacing-xs); }
.pb-sm { padding-bottom: var(--spacing-sm); }
.pb-md { padding-bottom: var(--spacing-md); }
.pb-lg { padding-bottom: var(--spacing-lg); }
.pb-xl { padding-bottom: var(--spacing-xl); }
.pb-2xl { padding-bottom: var(--spacing-2xl); }

.p-0 { padding: 0; }
.p-xs { padding: var(--spacing-xs); }
.p-sm { padding: var(--spacing-sm); }
.p-md { padding: var(--spacing-md); }
.p-lg { padding: var(--spacing-lg); }
.p-xl { padding: var(--spacing-xl); }

/* Display Utilities */
.block {
  display: block;
}

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

.inline {
  display: inline;
}

.hidden {
  display: none;
}

/* Width Utilities */
.w-full {
  width: 100%;
}

.w-auto {
  width: auto;
}

.max-w-sm {
  max-width: 640px;
}

.max-w-md {
  max-width: 768px;
}

.max-w-lg {
  max-width: 1024px;
}

.max-w-xl {
  max-width: 1280px;
}

/* Responsive Utilities */
@media (max-width: 767px) {
  .md-hidden {
    display: none;
  }
}

@media (min-width: 768px) {
  .sm-hidden {
    display: none;
  }
}

@media (min-width: 768px) and (max-width: 1023px) {
  .md-only {
    display: block;
  }

  .lg-hidden {
    display: none;
  }
}

@media (min-width: 1024px) {
  .lg-only {
    display: block;
  }
}

/* Aspect Ratios */
.aspect-square {
  aspect-ratio: 1 / 1;
}

.aspect-video {
  aspect-ratio: 16 / 9;
}

.aspect-portrait {
  aspect-ratio: 3 / 4;
}

/* Position */
.relative {
  position: relative;
}

.absolute {
  position: absolute;
}

.fixed {
  position: fixed;
}

.sticky {
  position: sticky;
}

/* Overflow */
.overflow-hidden {
  overflow: hidden;
}

.overflow-auto {
  overflow: auto;
}

.overflow-scroll {
  overflow: scroll;
}