/* ============================================
   UTILITY CLASSES
   Quick helper classes for common styling needs
   ============================================ */

/* ============================================
   SPACING UTILITIES
   ============================================ */

/* Margin Top */
.mt-0 { margin-top: 0 !important; }
.mt-xs { margin-top: var(--space-xs) !important; }
.mt-sm { margin-top: var(--space-sm) !important; }
.mt-md { margin-top: var(--space-md) !important; }
.mt-lg { margin-top: var(--space-lg) !important; }
.mt-xl { margin-top: var(--space-xl) !important; }
.mt-2xl { margin-top: var(--space-2xl) !important; }
.mt-3xl { margin-top: var(--space-3xl) !important; }

/* Margin Bottom */
.mb-0 { margin-bottom: 0 !important; }
.mb-xs { margin-bottom: var(--space-xs) !important; }
.mb-sm { margin-bottom: var(--space-sm) !important; }
.mb-md { margin-bottom: var(--space-md) !important; }
.mb-lg { margin-bottom: var(--space-lg) !important; }
.mb-xl { margin-bottom: var(--space-xl) !important; }
.mb-2xl { margin-bottom: var(--space-2xl) !important; }
.mb-3xl { margin-bottom: var(--space-3xl) !important; }

/* Padding */
.p-0 { padding: 0 !important; }
.p-sm { padding: var(--space-sm) !important; }
.p-md { padding: var(--space-md) !important; }
.p-lg { padding: var(--space-lg) !important; }
.p-xl { padding: var(--space-xl) !important; }

/* ============================================
   TEXT UTILITIES
   ============================================ */

.text-left { text-align: left !important; }
.text-center { text-align: center !important; }
.text-right { text-align: right !important; }

.text-primary { color: var(--color-text-primary) !important; }
.text-secondary { color: var(--color-text-secondary) !important; }
.text-tertiary { color: var(--color-text-tertiary) !important; }

.text-blue { color: var(--color-primary-blue) !important; }
.text-red { color: var(--color-primary-gray) !important; }
.text-success { color: var(--color-success) !important; }
.text-error { color: var(--color-error) !important; }

.text-small { font-size: var(--font-size-small) !important; }
.text-tiny { font-size: var(--font-size-tiny) !important; }
.text-body { font-size: var(--font-size-body) !important; }
.text-h4 { font-size: var(--font-size-h4) !important; }
.text-h3 { font-size: var(--font-size-h3) !important; }

.font-normal { font-weight: var(--font-weight-regular) !important; }
.font-medium { font-weight: var(--font-weight-medium) !important; }
.font-semibold { font-weight: var(--font-weight-semibold) !important; }
.font-bold { font-weight: var(--font-weight-bold) !important; }

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

.italic { font-style: italic !important; }

/* ============================================
   DISPLAY UTILITIES
   ============================================ */

.hidden { display: none !important; }
.block { display: block !important; }
.inline-block { display: inline-block !important; }
.flex { display: flex !important; }
.inline-flex { display: inline-flex !important; }
.grid { display: grid !important; }

/* Flex utilities */
.flex-row { flex-direction: row !important; }
.flex-column { flex-direction: column !important; }
.flex-wrap { flex-wrap: wrap !important; }
.flex-nowrap { flex-wrap: nowrap !important; }

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

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

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

/* ============================================
   BACKGROUND UTILITIES
   ============================================ */

.bg-white { background-color: var(--color-bg-white) !important; }
.bg-light { background-color: var(--color-bg-light) !important; }
.bg-blue { background-color: var(--color-primary-blue) !important; }
.bg-red { background-color: var(--color-primary-gray) !important; }

/* ============================================
   BORDER UTILITIES
   ============================================ */

.border { border: 1px solid var(--color-border) !important; }
.border-top { border-top: 1px solid var(--color-border) !important; }
.border-bottom { border-bottom: 1px solid var(--color-border) !important; }
.border-left { border-left: 1px solid var(--color-border) !important; }
.border-right { border-right: 1px solid var(--color-border) !important; }

.border-none { border: none !important; }

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

/* ============================================
   SHADOW UTILITIES
   ============================================ */

.shadow-none { box-shadow: none !important; }
.shadow-sm { box-shadow: var(--shadow-sm) !important; }
.shadow-md { box-shadow: var(--shadow-md) !important; }
.shadow-lg { box-shadow: var(--shadow-lg) !important; }
.shadow-xl { box-shadow: var(--shadow-xl) !important; }

/* ============================================
   POSITION UTILITIES
   ============================================ */

.relative { position: relative !important; }
.absolute { position: absolute !important; }
.fixed { position: fixed !important; }
.sticky { position: sticky !important; }

/* ============================================
   VISIBILITY UTILITIES
   ============================================ */

.visible { visibility: visible !important; }
.invisible { visibility: hidden !important; }

.opacity-0 { opacity: 0 !important; }
.opacity-50 { opacity: 0.5 !important; }
.opacity-75 { opacity: 0.75 !important; }
.opacity-100 { opacity: 1 !important; }

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

/* ============================================
   WIDTH & HEIGHT UTILITIES
   ============================================ */

.w-full { width: 100% !important; }
.w-auto { width: auto !important; }
.h-full { height: 100% !important; }
.h-auto { height: auto !important; }

.max-w-sm { max-width: 640px !important; }
.max-w-md { max-width: 768px !important; }
.max-w-lg { max-width: 1024px !important; }
.max-w-xl { max-width: 1280px !important; }
.max-w-full { max-width: 100% !important; }

/* ============================================
   OVERFLOW UTILITIES
   ============================================ */

.overflow-auto { overflow: auto !important; }
.overflow-hidden { overflow: hidden !important; }
.overflow-visible { overflow: visible !important; }
.overflow-scroll { overflow: scroll !important; }

/* ============================================
   CURSOR UTILITIES
   ============================================ */

.cursor-pointer { cursor: pointer !important; }
.cursor-default { cursor: default !important; }
.cursor-not-allowed { cursor: not-allowed !important; }

/* ============================================
   RESPONSIVE UTILITIES
   ============================================ */

/* Hide on mobile */
@media (max-width: 768px) {
  .hide-mobile { display: none !important; }
}

/* Hide on desktop */
@media (min-width: 769px) {
  .hide-desktop { display: none !important; }
}

/* Show on mobile only */
@media (max-width: 768px) {
  .show-mobile { display: block !important; }
}

@media (min-width: 769px) {
  .show-mobile { display: none !important; }
}

/* ============================================
   INTERACTIVE UTILITIES
   ============================================ */

.hover-lift {
  transition: transform var(--transition-base), box-shadow var(--transition-base);
}

.hover-lift:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

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

.hover-scale:hover {
  transform: scale(1.05);
}

.hover-opacity {
  transition: opacity var(--transition-fast);
}

.hover-opacity:hover {
  opacity: 0.8;
}

/* ============================================
   DISABLED STATE
   ============================================ */

.disabled,
[disabled] {
  opacity: 0.5 !important;
  cursor: not-allowed !important;
  pointer-events: none !important;
}

/* ============================================
   LOADING STATE
   ============================================ */

.loading-spinner {
  display: inline-block;
  width: 20px;
  height: 20px;
  border: 3px solid var(--color-border);
  border-top-color: var(--color-primary-gray);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}

.loading-dots::after {
  content: '...';
  animation: dots 1.5s steps(4, end) infinite;
}

@keyframes dots {
  0%, 20% {
    content: '.';
  }
  40% {
    content: '..';
  }
  60%, 100% {
    content: '...';
  }
}