@layer reset, base, theme, components, utilities;

@layer reset {
  *, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
  }

  body {
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    overflow-x: hidden;
  }

  img, picture, video, canvas, svg {
    display: block;
    max-inline-size: 100%;
    block-size: auto;
  }

  input, button, textarea, select {
    font: inherit;
  }

  a {
    text-decoration: none;
    color: inherit;
  }
}

@layer base {
  :root {
    /* Fonts */
    --font-sans: 'Outfit', 'Inter', system-ui, -apple-system, sans-serif;
    
    /* Spacing & Borders */
    --radius-sm: 8px;
    --radius-md: 16px;
    --radius-lg: 24px;
    --radius-xl: 32px;
    
    /* Layout Sizes */
    --container-max-w: 480px; /* Mobile focused max width */
    
    /* Color Palette (OKLCH for modern interpolation) */
    --color-primary-hue: 260; /* Neon Purple */
    --color-secondary-hue: 190; /* Cyan */
    --color-success-hue: 140; /* Green */
    --color-danger-hue: 10; /* Red */
    
    color-scheme: dark light;
    
    /* Default dark theme design tokens resolved via light-dark() */
    --bg-app: light-dark(#f8f9fa, #0d0e12);
    --bg-surface: light-dark(#ffffff, #15171e);
    --bg-surface-glass: light-dark(rgba(255, 255, 255, 0.75), rgba(21, 23, 30, 0.75));
    --border-color: light-dark(rgba(0, 0, 0, 0.08), rgba(255, 255, 255, 0.08));
    
    --text-main: light-dark(#1f2937, #f3f4f6);
    --text-muted: light-dark(#6b7280, #9ca3af);
    --text-inverse: light-dark(#ffffff, #0d0e12);
    
    --color-primary: light-dark(oklch(60% 0.18 var(--color-primary-hue)), oklch(70% 0.2 var(--color-primary-hue)));
    --color-primary-glow: light-dark(rgba(124, 58, 237, 0.15), rgba(167, 139, 250, 0.25));
    --color-secondary: light-dark(oklch(60% 0.16 var(--color-secondary-hue)), oklch(70% 0.18 var(--color-secondary-hue)));
    --color-success: light-dark(oklch(60% 0.15 var(--color-success-hue)), oklch(70% 0.17 var(--color-success-hue)));
    --color-danger: light-dark(oklch(60% 0.18 var(--color-danger-hue)), oklch(70% 0.2 var(--color-danger-hue)));
  }

  body {
    background-color: var(--bg-app);
    color: var(--text-main);
    font-family: var(--font-sans);
    line-height: 1.5;
    font-size: clamp(0.95rem, 0.85rem + 0.4cqi, 1.1rem);
    display: flex;
    flex-direction: column;
    align-items: center;
    min-block-size: 100dvh;
    padding-block-end: 2rem;
  }
}

@layer theme {
  /* Dynamic Gradients */
  .grad-primary {
    background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
  }
  
  .grad-success {
    background: linear-gradient(135deg, var(--color-success), var(--color-secondary));
  }

  .grad-danger {
    background: linear-gradient(135deg, var(--color-danger), oklch(65% 0.18 330));
  }
  
  /* Text gradients */
  .text-grad {
    background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
  }
}

@layer components {
  /* Mobile-first viewport container */
  .app-container {
    inline-size: 100%;
    max-inline-size: var(--container-max-w);
    min-block-size: 100dvh;
    display: flex;
    flex-direction: column;
    background-color: var(--bg-app);
    border-inline: 1px solid var(--border-color);
    position: relative;
    padding-inline: 1.25rem;
    padding-block: 1rem;
  }

  /* Shared App Header */
  .app-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-block-end: 1rem;
    border-block-end: 1px solid var(--border-color);
    margin-block-end: 1.5rem;
    
    h1 {
      font-size: 1.5rem;
      font-weight: 800;
      letter-spacing: -0.03em;
    }
  }

  /* Control buttons with standard touch targets */
  .btn-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-inline-size: 44px;
    min-block-size: 44px;
    border-radius: var(--radius-sm);
    border: 1px solid var(--border-color);
    background: var(--bg-surface);
    color: var(--text-main);
    cursor: pointer;
    transition: all 0.2s ease;
    
    &:hover:not(:disabled) {
      background: var(--border-color);
      transform: scale(1.05);
    }
    
    &:focus-visible {
      outline: 2px solid var(--color-primary);
      outline-offset: 2px;
    }
    
    &:active {
      transform: scale(0.95);
    }
  }

  .btn-primary {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.75rem 1.5rem;
    min-block-size: 48px;
    border-radius: var(--radius-md);
    border: none;
    font-weight: 700;
    color: var(--text-inverse);
    cursor: pointer;
    transition: all 0.2s ease;
    box-shadow: 0 4px 12px var(--color-primary-glow);
    
    &:hover:not(:disabled) {
      filter: brightness(1.1);
      transform: translateY(-1px);
    }
    
    &:active {
      transform: translateY(1px);
    }
    
    &:focus-visible {
      outline: 2px solid var(--color-primary);
      outline-offset: 2px;
    }
  }

  /* App Showcase Cards (Dashboard) */
  .card-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1rem;
    margin-block-end: 2rem;
  }

  .app-card {
    display: flex;
    flex-direction: column;
    padding: 1.25rem;
    border-radius: var(--radius-md);
    background: var(--bg-surface);
    border: 1px solid var(--border-color);
    transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
    cursor: pointer;
    position: relative;
    overflow: hidden;
    
    .card-icon {
      font-size: 1.75rem;
      margin-block-end: 0.75rem;
      display: inline-block;
    }
    
    h3 {
      font-size: 1.05rem;
      font-weight: 700;
      margin-block-end: 0.25rem;
    }
    
    p {
      font-size: 0.8rem;
      color: var(--text-muted);
      line-height: 1.3;
    }

    &::after {
      content: '';
      position: absolute;
      inset: 0;
      border-radius: inherit;
      border: 2px solid transparent;
      transition: border-color 0.2s ease;
      pointer-events: none;
    }

    &:hover {
      transform: translateY(-4px);
      box-shadow: 0 10px 20px rgba(0, 0, 0, 0.05);
      
      &::after {
        border-color: var(--color-primary);
      }
    }
  }



  /* Game Panels and layout items */
  .game-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1rem;
    flex-grow: 1;
  }
}

@layer utilities {
  .text-center { text-align: center; }
  .w-full { width: 100%; }
  
  /* Slide transition for testing animations */
  .fade-in {
    animation: fadeIn 0.3s ease-out forwards;
  }
  
  @keyframes fadeIn {
    from { opacity: 0; transform: translateY(8px); }
    to { opacity: 1; transform: translateY(0); }
  }

  /* PWA Install & Bookmark Guide Modal */
  .pwa-overlay {
    position: fixed;
    inset: 0;
    background: rgba(13, 14, 18, 0.7);
    backdrop-filter: blur(8px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 2000;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.3s ease;
    padding: 1.5rem;
    
    &.active {
      opacity: 1;
      pointer-events: auto;
    }
  }

  .pwa-modal {
    background: var(--bg-surface);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    width: 100%;
    max-width: 400px;
    padding: 2rem 1.5rem;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.15);
    display: flex;
    flex-direction: column;
    gap: 1.25rem;
    transform: translateY(20px);
    transition: transform 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
    
    h3 {
      font-size: 1.25rem;
      font-weight: 800;
      text-align: center;
      color: var(--text-main);
    }
  }

  .pwa-overlay.active .pwa-modal {
    transform: translateY(0);
  }

  .pwa-steps {
    display: flex;
    flex-direction: column;
    gap: 0.85rem;
  }

  .pwa-step {
    display: flex;
    align-items: flex-start;
    gap: 0.75rem;
    background: var(--bg-app);
    border: 1px solid var(--border-color);
    padding: 0.85rem 1rem;
    border-radius: var(--radius-md);
    
    .step-icon {
      font-size: 1.5rem;
      flex-shrink: 0;
    }
    
    .step-text {
      display: flex;
      flex-direction: column;
      gap: 0.2rem;
      
      .step-title {
        font-weight: 700;
        font-size: 0.85rem;
        color: var(--text-main);
      }
      
      .step-desc {
        font-size: 0.75rem;
        color: var(--text-muted);
        line-height: 1.4;
      }
    }
  }
}