/**
 * UTILITY CLASSES
 * Common utility classes for rapid development
 */

/* ===== CONTAINER ===== */
.container {
  max-width: var(--container-width);
  margin-left: auto;
  margin-right: auto;
  padding-left: var(--container-padding);
  padding-right: var(--container-padding);
}

/* ===== VISIBILITY ===== */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border-width: 0;
}

.hide-mobile {
  display: none;
}

@media (min-width: 768px) {
  .hide-mobile {
    display: block;
  }

  .hide-desktop {
    display: none;
  }
}

/* ===== SPACING ===== */
.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); }

.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); }

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

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

/* ===== TEXT UTILITIES ===== */
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

.text-accent { color: var(--color-accent); }
.text-muted { color: var(--color-text-muted); }

.font-mono { font-family: var(--font-mono); }
.font-bold { font-weight: var(--weight-bold); }
.font-semibold { font-weight: var(--weight-semibold); }

.uppercase { text-transform: uppercase; }
.lowercase { text-transform: lowercase; }
.capitalize { text-transform: capitalize; }

/* ===== LAYOUT UTILITIES ===== */
.flex { display: flex; }
.inline-flex { display: inline-flex; }
.grid { display: grid; }

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

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

.justify-center { justify-content: center; }
.justify-between { justify-content: space-between; }
.justify-start { justify-content: flex-start; }
.justify-end { justify-content: flex-end; }

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

/* ===== ANIMATION UTILITIES ===== */
.fade-in {
  animation: fadeIn var(--transition-base) var(--transition-ease);
}

.slide-up {
  animation: slideUp var(--transition-base) var(--transition-ease);
}

@keyframes fadeIn {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}

@keyframes slideUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ===== INTERACTION STATES ===== */
.hover-accent {
  transition: color var(--transition-fast) var(--transition-ease);
}

.hover-accent:hover {
  color: var(--color-accent);
}

.hover-lift {
  transition: transform var(--transition-fast) var(--transition-ease);
}

.hover-lift:hover {
  transform: translateY(-2px);
}

/* ===== SURFACE UTILITIES ===== */
.surface-primary {
  background-color: var(--color-bg-primary);
}

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

.surface-glass {
  background: var(--color-black-30);
  backdrop-filter: var(--backdrop-blur);
}

/* ===== BORDER UTILITIES ===== */
.border-accent {
  border: var(--border-width) solid var(--color-accent);
}

.rounded-sm { border-radius: var(--border-radius-sm); }
.rounded-md { border-radius: var(--border-radius-md); }
.rounded-lg { border-radius: var(--border-radius-lg); }
.rounded-full { border-radius: 9999px; }