/* ===== GLASS MORPHISM SYSTEM ===== */
@layer components {
  .glass {
    background: var(--color-surface-glass);
    -webkit-backdrop-filter: var(--backdrop-blur-lg); /* Safari */
    backdrop-filter: var(--backdrop-blur-lg);
    border: 1px solid var(--color-border);
  }

  /* Glass Card Component */
  .glass-card {
    /* Base glass properties */
    background: var(--color-surface-glass);
    -webkit-backdrop-filter: var(--backdrop-blur-lg);
    backdrop-filter: var(--backdrop-blur-lg);
    border: 1px solid var(--color-border);
    
    /* Card specific properties */
    border-radius: var(--border-radius-xl);
    transition: all var(--duration-300) var(--ease-out);
  }

  .glass-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--color-primary), transparent);
    border-radius: var(--border-radius-xl) var(--border-radius-xl) 0 0;
    opacity: 0.6;
  }

  .glass-card:hover {
    border-color: var(--color-border-hover);
    background: var(--color-surface-hover);
    transform: translateY(-2px);
    box-shadow: var(--shadow-glow);
  }

  .glass-card:focus-within {
    border-color: var(--color-border-focus);
    box-shadow: var(--shadow-glow), 0 0 0 2px var(--color-primary);
  }

  /* Glass Panel - for larger sections */
  .glass-panel {
    background: var(--color-surface-glass);
    -webkit-backdrop-filter: var(--backdrop-blur-xl);
    backdrop-filter: var(--backdrop-blur-xl);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius-2xl);
    padding: clamp(1.5rem, 5vw, var(--space-8));
    position: relative;
    overflow: hidden;
    width: 100%;
    box-sizing: border-box;
  }

  .glass-panel::after {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(
      circle at center,
      rgba(0, 255, 136, 0.1) 0%,
      transparent 70%
    );
    opacity: 0;
    transition: opacity var(--duration-500) var(--ease-out);
    pointer-events: none;
  }

  .glass-panel:hover::after {
    opacity: 1;
  }

  /* Glass Button Variant */
  .glass-button {
    background: var(--color-surface-glass);
    -webkit-backdrop-filter: var(--backdrop-blur);
    backdrop-filter: var(--backdrop-blur);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius-lg);
    padding: var(--space-3) var(--space-6);
    transition: all var(--duration-200) var(--ease-out);
    cursor: pointer;
  }

  .glass-button:hover {
    background: var(--color-surface-hover);
    border-color: var(--color-primary);
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(0, 255, 136, 0.2);
  }

  .glass-button:active {
    transform: translateY(0);
    box-shadow: 0 2px 6px rgba(0, 255, 136, 0.1);
  }

  /* Glass Input Field */
  .glass-input {
    background: rgba(255, 255, 255, 0.02);
    -webkit-backdrop-filter: var(--backdrop-blur-sm);
    backdrop-filter: var(--backdrop-blur-sm);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius-md);
    padding: var(--space-3) var(--space-4);
    transition: all var(--duration-200) var(--ease-out);
  }

  .glass-input:focus {
    background: rgba(255, 255, 255, 0.04);
    border-color: var(--color-primary);
    outline: none;
    box-shadow: 0 0 0 3px rgba(0, 255, 136, 0.1);
  }

  /* Glass Container - for result sections */
  .glass-container {
    background: var(--color-surface-glass);
    -webkit-backdrop-filter: var(--backdrop-blur-lg);
    backdrop-filter: var(--backdrop-blur-lg);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius-xl);
    overflow: hidden;
    position: relative;
  }

  /* Shimmer effect for loading states */
  .glass-shimmer {
    position: relative;
    overflow: hidden;
  }

  .glass-shimmer::after {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(
      90deg,
      transparent,
      rgba(255, 255, 255, 0.1),
      transparent
    );
    animation: shimmer 2s infinite;
  }

  @keyframes shimmer {
    to {
      left: 100%;
    }
  }

  /* Fallback for unsupported browsers */
  @supports not (backdrop-filter: blur()) {
    .glass,
    .glass-card,
    .glass-panel,
    .glass-button,
    .glass-input,
    .glass-container {
      background: rgba(255, 255, 255, 0.15);
      border: 1px solid rgba(255, 255, 255, 0.2);
    }

    [data-theme="light"] .glass,
    [data-theme="light"] .glass-card,
    [data-theme="light"] .glass-panel,
    [data-theme="light"] .glass-button,
    [data-theme="light"] .glass-input,
    [data-theme="light"] .glass-container {
      background: rgba(0, 0, 0, 0.05);
      border: 1px solid rgba(0, 0, 0, 0.1);
    }
  }

  /* Performance optimization for mobile */
  @media (max-width: 768px) {
    .glass,
    .glass-card,
    .glass-panel,
    .glass-container {
      -webkit-backdrop-filter: var(--backdrop-blur-md);
      backdrop-filter: var(--backdrop-blur-md);
    }
  }

  /* Accessibility - reduced transparency */
  @media (prefers-reduced-transparency: reduce) {
    .glass,
    .glass-card,
    .glass-panel,
    .glass-button,
    .glass-input,
    .glass-container {
      background: var(--color-surface-elevated);
      -webkit-backdrop-filter: none;
      backdrop-filter: none;
    }
  }
}