/* ============================================================================
   Responsive Layout System
   Mobile-first grid/flexbox, responsive utilities, breakpoint media queries
   ============================================================================ */

/* Main container - responsive max-width */
.container {
  width: 100%;
  margin: 0 auto;
  padding-left: var(--spacing-md);
  padding-right: var(--spacing-md);
}

@media (min-width: 768px) {
  .container {
    padding-left: var(--spacing-lg);
    padding-right: var(--spacing-lg);
  }
}

@media (min-width: 1024px) {
  .container {
    max-width: var(--size-container);
    padding-left: var(--spacing-xl);
    padding-right: var(--spacing-xl);
  }
}

/* Grid System - 12-column responsive grid */
.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--spacing-md);
}

@media (min-width: 768px) {
  .grid {
    gap: var(--spacing-lg);
  }

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

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

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

@media (min-width: 1024px) {
  .grid-2-lg {
    grid-template-columns: repeat(2, 1fr);
  }

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

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

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

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

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

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

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

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

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

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

.flex-1 {
  flex: 1;
}

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

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

.section-lg {
  padding: var(--spacing-3xl) 0;
}

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

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

/* Display utilities */
.hidden {
  display: none !important;
}

.invisible {
  visibility: hidden;
}

.block {
  display: block;
}

.inline {
  display: inline;
}

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

/* Responsive display utilities */
@media (max-width: 767px) {
  .hidden-mobile {
    display: none !important;
  }
}

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

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

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

.overflow-auto {
  overflow: auto;
}

.nowrap {
  white-space: nowrap;
}

.truncate {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

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

.absolute {
  position: absolute;
}

.fixed {
  position: fixed;
}

.static {
  position: static;
}

/* Alignment */
.align-top {
  vertical-align: top;
}

.align-middle {
  vertical-align: middle;
}

.align-bottom {
  vertical-align: bottom;
}