/* ==========================================================================
   Layout - Container, Grid, Flex, Sections, Breakpoints
   ========================================================================== */

/* 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: 768px) {
  .container {
    padding-left: var(--container-padding-md);
    padding-right: var(--container-padding-md);
  }
}

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

/* Section Spacing */
.section {
  padding-top: var(--space-16);
  padding-bottom: var(--space-16);
}

@media (min-width: 768px) {
  .section {
    padding-top: var(--space-20);
    padding-bottom: var(--space-20);
  }
}

@media (min-width: 1024px) {
  .section {
    padding-top: var(--space-24);
    padding-bottom: var(--space-24);
  }
}

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

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

@media (min-width: 1024px) {
  .section--lg {
    padding-top: var(--space-32);
    padding-bottom: var(--space-32);
  }
}

/* Grid System */
.grid {
  display: grid;
  gap: var(--space-4);
}

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

.grid--gap-md {
  gap: var(--space-6);
}

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

.grid--cols-1 {
  grid-template-columns: repeat(1, minmax(0, 1fr));
}

.grid--cols-2 {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.grid--cols-3 {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.grid--cols-4 {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

@media (min-width: 640px) {
  .grid--cols-sm-2 {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .grid--cols-sm-3 {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (min-width: 768px) {
  .grid--cols-md-2 {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .grid--cols-md-3 {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .grid--cols-md-4 {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

@media (min-width: 1024px) {
  .grid--cols-lg-3 {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .grid--cols-lg-4 {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

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

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

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

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

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

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

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

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

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

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

/* Two Column Layout */
.two-col {
  display: grid;
  gap: var(--space-8);
}

@media (min-width: 768px) {
  .two-col {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: var(--space-12);
  }
}

@media (min-width: 1024px) {
  .two-col {
    gap: var(--space-16);
  }
}

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

.aspect-square {
  aspect-ratio: 1 / 1;
}

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

/* Responsive Display Utilities */
.hidden {
  display: none;
}

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

  .visible-md {
    display: block;
  }
}

@media (min-width: 1024px) {
  .hidden-lg {
    display: none;
  }

  .visible-lg {
    display: block;
  }
}