/**
 * Lemon Casino SVG Icon System
 * Sleek, modern icons with liquid glass aesthetic
 * All icons use currentColor for CSS color inheritance
 *
 * Usage:
 *   <span class="icon icon-users"></span>
 *   <span class="icon icon-lg icon-shield"></span>
 *
 * Requires: /js/icons.js for icon definitions
 */

/* ==========================================================================
   Base Icon Styles
   ========================================================================== */

.icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 1em;
  height: 1em;
  vertical-align: -0.125em;
  flex-shrink: 0;
}

.icon svg {
  width: 100%;
  height: 100%;
  fill: none;
  stroke: currentColor;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
}

/* ==========================================================================
   Size Variants
   ========================================================================== */

.icon-sm {
  width: 0.875em;
  height: 0.875em;
}

.icon-lg {
  width: 1.5em;
  height: 1.5em;
}

.icon-xl {
  width: 2em;
  height: 2em;
}

.icon-2xl {
  width: 2.5em;
  height: 2.5em;
}

/* Fixed pixel sizes for consistent UI */
.icon-16 {
  width: 16px;
  height: 16px;
}

.icon-20 {
  width: 20px;
  height: 20px;
}

.icon-24 {
  width: 24px;
  height: 24px;
}

.icon-32 {
  width: 32px;
  height: 32px;
}

/* ==========================================================================
   Style Variants
   ========================================================================== */

/* Filled variant - for icons that should be solid */
.icon-filled svg {
  fill: currentColor;
  stroke: none;
}

/* Subtle/muted variant */
.icon-subtle {
  opacity: 0.6;
}

/* Thin stroke variant */
.icon-thin svg {
  stroke-width: 1.5;
}

/* Bold stroke variant */
.icon-bold svg {
  stroke-width: 2.5;
}

/* ==========================================================================
   Color Variants (using CSS variables from admin panel)
   ========================================================================== */

.icon-gold {
  color: var(--lemon-gold, #ffd93d);
}

.icon-green {
  color: var(--green, #22c55e);
}

.icon-red {
  color: var(--red, #ef4444);
}

.icon-blue {
  color: var(--blue, #3b82f6);
}

.icon-purple {
  color: var(--purple, #a855f7);
}

.icon-orange {
  color: var(--orange, #f97316);
}

.icon-muted {
  color: var(--text-muted, #9ca3af);
}

/* ==========================================================================
   Animation Variants
   ========================================================================== */

/* Spin animation (for loading/refresh) */
.icon-spin {
  animation: icon-spin 1s linear infinite;
  will-change: transform;
}

@keyframes icon-spin {
  from {
    transform: rotate(0deg);
  }
  to {
    transform: rotate(360deg);
  }
}

/* Pulse animation (for attention) */
.icon-pulse {
  animation: icon-pulse 2s ease-in-out infinite;
  will-change: opacity;
}

@keyframes icon-pulse {
  0%, 100% {
    opacity: 1;
  }
  50% {
    opacity: 0.5;
  }
}

/* Bounce animation (for notifications) */
.icon-bounce {
  animation: icon-bounce 0.5s ease-in-out;
  will-change: transform;
}

@keyframes icon-bounce {
  0%, 100% {
    transform: translateY(0);
  }
  50% {
    transform: translateY(-4px);
  }
}

/* ==========================================================================
   Hover Effects
   ========================================================================== */

.icon-hover:hover {
  opacity: 0.8;
  transition: opacity 0.15s ease;
  will-change: opacity;
}

.icon-hover-scale:hover {
  transform: scale(1.1);
  transition: transform 0.15s ease;
  will-change: transform;
}

.icon-hover-glow:hover {
  filter: drop-shadow(0 0 4px currentColor);
  transition: filter 0.15s ease;
  will-change: filter;
}

/* ==========================================================================
   Keyboard Focus Styles (Accessibility)
   ========================================================================== */

/* Focus styles for keyboard users */
.icon-hover:focus,
.icon-hover:focus-visible {
  opacity: 0.8;
  outline: 2px solid currentColor;
  outline-offset: 2px;
  transition: opacity 0.15s ease;
}

.icon-hover-scale:focus,
.icon-hover-scale:focus-visible {
  transform: scale(1.1);
  outline: 2px solid currentColor;
  outline-offset: 2px;
  transition: transform 0.15s ease;
}

.icon-hover-glow:focus,
.icon-hover-glow:focus-visible {
  filter: drop-shadow(0 0 4px currentColor);
  outline: 2px solid currentColor;
  outline-offset: 2px;
  transition: filter 0.15s ease;
}

/* Touch device active states */
@media (hover: none) and (pointer: coarse) {
  .icon-hover:active {
    opacity: 0.6;
  }
  
  .icon-hover-scale:active {
    transform: scale(0.95);
  }
}

/* ==========================================================================
   Sidebar Integration (admin panel specific)
   ========================================================================== */

/* Override sidebar icon styles when using SVG icons */
.sidebar-item-icon.icon {
  font-size: 18px;
  width: 24px;
  height: 24px;
  text-align: center;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.sidebar-item-icon.icon svg {
  width: 18px;
  height: 18px;
}

/* Sub-item icons are slightly smaller */
.sidebar-item.sub-item .sidebar-item-icon.icon svg {
  width: 16px;
  height: 16px;
}

/* Active state glow effect */
.sidebar-item.active .sidebar-item-icon.icon {
  color: var(--lemon-gold, #ffd93d);
}

.sidebar-item.active .sidebar-item-icon.icon svg {
  filter: drop-shadow(0 0 3px var(--lemon-glow, rgba(255, 217, 61, 0.3)));
}

/* ==========================================================================
   Button Integration
   ========================================================================== */

/* Icon in button */
.btn .icon,
button .icon {
  margin-right: 0.5em;
  vertical-align: -0.125em;
}

/* Icon-only button */
.btn-icon {
  padding: 0.5em;
  line-height: 1;
  min-width: 44px;
  min-height: 44px;
}

/* Mobile touch targets need to be larger for WCAG compliance */
@media (hover: none) and (pointer: coarse) {
  .btn-icon {
    min-width: 48px;
    min-height: 48px;
  }
}

.btn-icon .icon {
  margin: 0;
}

/* ==========================================================================
   Table Integration
   ========================================================================== */

/* Icon in table cell */
td .icon,
th .icon {
  vertical-align: middle;
  margin-right: 0.25em;
}

/* ==========================================================================
   Badge/Status Integration
   ========================================================================== */

/* Icon with badge */
.icon-with-badge {
  position: relative;
  display: inline-flex;
}

.icon-with-badge .badge {
  position: absolute;
  top: -0.25em;
  right: -0.25em;
  min-width: 1.2em;
  height: 1.2em;
  font-size: 0.6em;
  padding: 0 0.3em;
  border-radius: 0.6em;
  background: var(--red, #ef4444);
  color: white;
  display: flex;
  align-items: center;
  justify-content: center;
}

/* ==========================================================================
   Liquid Glass Effect (for special emphasis)
   ========================================================================== */

.icon-glass {
  background: linear-gradient(135deg, rgba(255,255,255,0.08) 0%, rgba(255,255,255,0.02) 100%);
  backdrop-filter: blur(4px);
  border-radius: 8px;
  padding: 8px;
  border: 1px solid rgba(255,255,255,0.08);
  will-change: backdrop-filter;
}

/* Fallback for browsers that don't support backdrop-filter */
@supports not (backdrop-filter: blur(4px)) {
  .icon-glass {
    background: rgba(0, 0, 0, 0.6);
  }
}

.icon-glass svg {
  filter: drop-shadow(0 1px 2px rgba(0,0,0,0.2));
  will-change: filter;
}

/* ==========================================================================
   Accessibility
   ========================================================================== */

/* Reduced motion preference */
@media (prefers-reduced-motion: reduce) {
  .icon-spin,
  .icon-pulse,
  .icon-bounce {
    animation: none;
  }

  .icon-hover-scale:hover {
    transform: none;
  }
}

/* High contrast mode adjustments */
@media (prefers-contrast: high) {
  .icon svg {
    stroke-width: 2.5;
  }

  .icon-subtle {
    opacity: 1;
  }
}