/* Layout Utilities */

/* 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);
}

.container-sm {
  max-width: 56rem;
}

.container-xs {
  max-width: 42rem;
}

/* Section Padding */
section[data-padding-top="small"] {
  padding-top: var(--spacing-sm);
}

section[data-padding-top="main"] {
  padding-top: var(--spacing-md);
}

section[data-padding-top="large"] {
  padding-top: var(--spacing-lg);
}

section[data-padding-bottom="small"] {
  padding-bottom: var(--spacing-sm);
}

section[data-padding-bottom="main"] {
  padding-bottom: var(--spacing-md);
}

section[data-padding-bottom="large"] {
  padding-bottom: var(--spacing-lg);
}

/* Grid System */
.grid {
  display: grid;
  gap: 2rem;
}

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

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

@media (max-width: 768px) {
  .grid-2,
  .grid-3 {
    grid-template-columns: 1fr;
  }
}

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

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

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

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

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

.gap-sm {
  gap: 1rem;
}

.gap-md {
  gap: 2rem;
}

.gap-lg {
  gap: 3rem;
}

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

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

/* Animation Classes - GPU Accelerated */
.fade-in {
  opacity: 0;
  transform: translate3d(0, 20px, 0);
  transition: opacity 0.3s ease-out,
              transform 0.3s ease-out;
  will-change: opacity, transform;
}

.fade-in.is-visible {
  opacity: 1;
  transform: translate3d(0, 0, 0);
}

/* Responsive Visibility */
@media (max-width: 768px) {
  .hide-mobile {
    display: none;
  }
}

@media (min-width: 769px) {
  .hide-desktop {
    display: none;
  }
}