@layer base, components, utilities;

@layer base {
  :root {
    --bg-color: oklch(0.15 0.05 240);
    --text-primary: oklch(0.95 0.02 240);
    --text-secondary: oklch(0.8 0.05 240);
    --card-bg: rgba(255, 255, 255, 0.05);
    --card-border: rgba(255, 255, 255, 0.1);
    --accent-color: oklch(0.7 0.15 150);
    --accent-glow: rgba(0, 255, 128, 0.3);
    --history-item-bg: rgba(255, 255, 255, 0.03);
    --hero-gradient: linear-gradient(135deg, oklch(0.9 0.1 150), oklch(0.8 0.2 240));

    /* Lotto Ball Colors (Modern OKLCH version) */
    --lotto-yellow: oklch(0.85 0.15 90);
    --lotto-blue: oklch(0.65 0.15 240);
    --lotto-red: oklch(0.6 0.2 25);
    --lotto-grey: oklch(0.7 0.02 240);
    --lotto-green: oklch(0.7 0.15 150);

    font-family: 'Inter', system-ui, -apple-system, sans-serif;
    transition: background-color 0.3s ease, color 0.3s ease;
  }

  /* Light Mode Variables */
  [data-theme="light"] {
    --bg-color: oklch(0.98 0.01 240);
    --text-primary: oklch(0.15 0.02 240);
    --text-secondary: oklch(0.35 0.05 240);
    --card-bg: rgba(0, 0, 0, 0.04);
    --card-border: rgba(0, 0, 0, 0.12);
    --accent-color: oklch(0.5 0.2 150);
    --accent-glow: rgba(0, 150, 75, 0.1);
    --history-item-bg: rgba(0, 0, 0, 0.03);
    --hero-gradient: linear-gradient(135deg, oklch(0.5 0.2 150), oklch(0.4 0.2 240));
  }

  body {
    background-color: var(--bg-color);
    color: var(--text-primary);
    margin: 0;
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    overflow-x: hidden;
  }

  .background-texture {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: radial-gradient(circle at 50% 50%, oklch(0.2 0.05 240) 0%, transparent 80%),
                      url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noiseFilter'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.65' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noiseFilter)'/%3E%3C/svg%3E");
    opacity: 0.15;
    z-index: -1;
  }
}

@layer components {
  .container {
    max-width: 800px;
    width: 100%;
    padding: 2rem;
    display: flex;
    flex-direction: column;
    gap: 2rem;
    animation: fadeIn 0.8s ease-out;
  }

  .theme-switch-wrapper {
    display: flex;
    justify-content: flex-end;
    margin-bottom: -1rem;
  }

  .theme-toggle-btn {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    backdrop-filter: blur(8px);
    width: 48px;
    height: 48px;
    border-radius: 12px;
    cursor: pointer;
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 1.2rem;
    transition: all 0.3s ease;
  }

  .theme-toggle-btn:hover {
    transform: scale(1.1);
    border-color: var(--accent-color);
  }

  .icon-sun { display: none; }
  .icon-moon { display: block; }

  [data-theme="light"] .icon-sun { display: block; }
  [data-theme="light"] .icon-moon { display: none; }

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

  .header {
    text-align: center;
    margin-bottom: 1rem;
  }

  .hero-text {
    font-size: clamp(2rem, 5vw, 3.5rem);
    font-weight: 800;
    margin: 0;
    background: var(--hero-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    filter: drop-shadow(0 0 10px rgba(0, 255, 128, 0.2));
  }

  .sub-text {
    color: var(--text-secondary);
    margin-top: 0.5rem;
  }

  .user-input-group {
    display: flex;
    flex-direction: column;
    gap: 0.8rem;
    width: 100%;
    max-width: 320px;
  }

  .input-label {
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--text-secondary);
  }

  .name-input {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: 12px;
    padding: 0.8rem 1rem;
    color: var(--text-primary);
    font-size: 1rem;
    outline: none;
    transition: all 0.3s ease;
  }

  .name-input:focus {
    border-color: var(--accent-color);
    box-shadow: 0 0 10px var(--accent-glow);
    background: rgba(255, 255, 255, 0.08);
  }

  .generator-card {
    background: var(--card-bg);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid var(--card-border);
    border-radius: 24px;
    padding: 3rem;
    box-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.37);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 2.5rem;
    position: relative;
    overflow: hidden;
  }

  .ball-container {
    display: flex;
    justify-content: center;
    gap: 1rem;
    flex-wrap: wrap;
    min-height: 80px;
    width: 100%;
    align-items: center;
  }

  .placeholder-text {
    color: var(--text-secondary);
    font-size: 1.1rem;
    font-style: italic;
  }

  /* Lotto Ball Styling */
  .lotto-ball {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
    font-weight: 800;
    font-size: 1.4rem;
    color: white;
    box-shadow: 0 4px 15px rgba(0,0,0,0.3), inset 0 -4px 10px rgba(0,0,0,0.2);
    animation: ballDrop 0.5s cubic-bezier(0.175, 0.885, 0.32, 1.275) backwards;
    text-shadow: 0 2px 4px rgba(0,0,0,0.3);
    position: relative;
  }

  @keyframes ballDrop {
    from { transform: scale(0) translateY(-100px) rotate(-180deg); opacity: 0; }
    to { transform: scale(1) translateY(0) rotate(0deg); opacity: 1; }
  }

  /* Color Variations */
  .ball-yellow { background: linear-gradient(145deg, var(--lotto-yellow), oklch(0.7 0.1 80)); }
  .ball-blue { background: linear-gradient(145deg, var(--lotto-blue), oklch(0.5 0.1 230)); }
  .ball-red { background: linear-gradient(145deg, var(--lotto-red), oklch(0.4 0.15 20)); }
  .ball-grey { background: linear-gradient(145deg, var(--lotto-grey), oklch(0.5 0.01 240)); }
  .ball-green { background: linear-gradient(145deg, var(--lotto-green), oklch(0.5 0.1 140)); }

  .actions {
    display: flex;
    gap: 1.5rem;
    width: 100%;
    justify-content: center;
  }

  .primary-btn {
    padding: 1rem 2.5rem;
    border-radius: 14px;
    border: none;
    background: linear-gradient(135deg, oklch(0.7 0.15 150), oklch(0.6 0.15 150));
    color: white;
    font-weight: 700;
    font-size: 1.1rem;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 4px 15px var(--accent-glow);
  }

  .primary-btn:hover {
    transform: translateY(-3px) scale(1.02);
    box-shadow: 0 8px 25px var(--accent-glow);
    filter: brightness(1.1);
  }

  .primary-btn:active {
    transform: translateY(-1px);
  }

  .secondary-btn {
    padding: 1rem 2.5rem;
    border-radius: 14px;
    border: 1px solid var(--card-border);
    background: transparent;
    color: var(--text-secondary);
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
  }

  .secondary-btn:hover {
    background: rgba(255, 255, 255, 0.05);
    color: var(--text-primary);
    border-color: rgba(255, 255, 255, 0.3);
  }

  .history-container {
    background: var(--card-bg);
    border-radius: 20px;
    padding: 1.5rem;
    border: 1px solid var(--card-border);
  }

  .section-title {
    font-size: 1.2rem;
    margin-bottom: 1rem;
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    gap: 0.5rem;
  }

  .history-list {
    list-style: none;
    padding: 0;
    margin: 0;
    display: flex;
    flex-direction: column;
    gap: 0.8rem;
  }

  .history-item {
    background: var(--history-item-bg);
    border-radius: 12px;
    padding: 1rem;
    display: flex;
    flex-direction: column;
    gap: 0.8rem;
    border-left: 4px solid var(--accent-color);
    animation: slideIn 0.3s ease-out;
  }

  .history-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    width: 100%;
  }

  .history-user-info {
    display: flex;
    align-items: center;
    gap: 0.5rem;
  }

  .user-badge {
    background: var(--accent-color);
    color: white;
    padding: 0.2rem 0.6rem;
    border-radius: 8px;
    font-size: 0.8rem;
    font-weight: 700;
  }

  .user-name-text {
    font-weight: 600;
    font-size: 1rem;
    color: var(--text-primary);
  }

  @keyframes slideIn {
    from { opacity: 0; transform: translateX(-20px); }
    to { opacity: 1; transform: translateX(0); }
  }

  .history-balls {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
  }

  .small-ball {
    width: 24px;
    height: 24px;
    border-radius: 50%;
    font-size: 0.7rem;
    display: flex;
    justify-content: center;
    align-items: center;
    font-weight: 700;
    color: white;
  }

  .timestamp {
    font-size: 0.8rem;
    color: var(--text-secondary);
  }
}

/* Mobile Responsive */
@container (max-width: 600px) {
  .generator-card { padding: 2rem 1rem; }
  .actions { flex-direction: column; }
}