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

@layer reset {
  html, body, header, main, footer, section, article, aside, div, h1, h2, h3, p, ul, li, dl, dt, dd, figure, figcaption, dialog, form, button, canvas {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
  }
}

@layer theme {
  :root {
    --bg-obsidian: #080a0f;
    --bg-panel: #121620;
    --bg-card: #1b2130;
    --border-steel: #2c354b;
    --text-primary: #f2f5fa;
    --text-muted: #9aa5b8;
    --accent-gold: #ffca28;
    --accent-nitro: #00e5ff;
    --accent-emerald: #26e682;
    --truck-red: #ff3333;
    --truck-blue: #2986ff;
    --truck-yellow: #ffd61a;
    --truck-silver: #d4dde8;
    --font-display: 'Impact', 'Arial Black', system-ui, sans-serif;
    --font-mono: 'JetBrains Mono', 'Fira Code', ui-monospace, monospace;
    --font-ui: system-ui, -apple-system, sans-serif;
  }
}

@layer base {
  body {
    background-color: var(--bg-obsidian);
    color: var(--text-primary);
    font-family: var(--font-ui);
    block-size: 100dvh;
    inline-size: 100vw;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: space-between;
    overflow: hidden;
  }

  button {
    font-family: var(--font-mono);
    font-size: 0.72rem;
    font-weight: 700;
    color: var(--text-primary);
    background-color: var(--bg-card);
    border: 1px solid var(--border-steel);
    border-radius: 4px;
    padding-block: 0.22rem;
    padding-inline: 0.55rem;
    cursor: pointer;
    transition: background-color 0.12s ease, border-color 0.12s ease;
  }

  button:hover:not(:disabled) {
    background-color: #273044;
    border-color: var(--accent-gold);
  }

  button:disabled {
    opacity: 0.45;
    cursor: not-allowed;
  }

  button.primary {
    background-color: #b81d1d;
    border-color: #ff5252;
  }

  button.primary:hover:not(:disabled) {
    background-color: #d62424;
    border-color: var(--accent-gold);
  }
}

@layer components {
  /* Ultra-compact 34px top bar so ~96% of viewport height is dedicated to the racetrack */
  .top-command-bar {
    inline-size: 100%;
    block-size: 34px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 0.5rem;
    padding-inline: 0.75rem;
    background-color: var(--bg-panel);
    border-block-end: 1px solid var(--border-steel);
    flex-shrink: 0;
  }

  .brand-title {
    display: flex;
    align-items: center;
    gap: 0.65rem;
  }

  .brand-title h1 {
    font-family: var(--font-display);
    font-size: 0.98rem;
    letter-spacing: 0.05em;
    color: var(--accent-gold);
    text-transform: uppercase;
  }

  .kbd-hint {
    font-family: var(--font-mono);
    font-size: 0.68rem;
    color: var(--text-muted);
  }

  .kbd-hint kbd {
    color: var(--accent-gold);
    font-weight: 700;
  }

  .toolbar-controls {
    display: flex;
    align-items: center;
    gap: 0.35rem;
  }

  .layer-pill[aria-pressed="true"] {
    background-color: #163c4d;
    border-color: var(--accent-nitro);
    color: var(--accent-nitro);
  }

  .arena-stage {
    position: relative;
    inline-size: 100%;
    block-size: calc(100dvh - 34px);
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: #06070b;
    overflow: hidden;
    content-visibility: auto;
    contain-intrinsic-size: auto none auto 720px;
  }

  #game-canvas {
    max-inline-size: 100%;
    max-block-size: 100%;
    aspect-ratio: 16 / 9;
     inline-size: auto;
    block-size: auto;
    display: block;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.8);
  }

  /* Sleek single-line 32px translucent HUD strip tucked inside the top bleacher margin */
  .arcade-hud-overlay {
    position: absolute;
    inset-block-start: 4px;
    inset-inline: 12px;
    block-size: 32px;
    display: grid;
    grid-template-columns: repeat(4, 1fr) 1.25fr;
    gap: 0.4rem;
    pointer-events: none;
  }

  .truck-hud-card {
    background-color: rgba(14, 18, 28, 0.84);
    border: 1px solid rgba(255, 255, 255, 0.14);
    border-inline-start: 3px solid var(--card-accent, var(--truck-red));
    border-radius: 4px;
    padding-inline: 0.45rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 0.4rem;
    font-family: var(--font-mono);
    font-size: 0.68rem;
  }

  .truck-hud-header {
    display: flex;
    align-items: center;
    gap: 0.35rem;
    font-weight: 700;
  }

  .truck-driver-name {
    color: var(--card-accent, var(--text-primary));
    white-space: nowrap;
  }

  .truck-rank-badge {
    background-color: rgba(255, 202, 40, 0.18);
    color: var(--accent-gold);
    padding-inline: 0.28rem;
    border-radius: 3px;
    font-size: 0.65rem;
  }

  .truck-stats-row {
    display: flex;
    align-items: center;
    gap: 0.45rem;
    color: var(--text-muted);
  }

  .truck-cash {
    color: var(--accent-emerald);
    font-weight: 700;
  }

  .truck-nitro-bar {
    inline-size: 54px;
    block-size: 6px;
    background-color: #0b0f18;
    border-radius: 99px;
    overflow: hidden;
    border: 1px solid rgba(255, 255, 255, 0.16);
    flex-shrink: 0;
  }

  .truck-nitro-fill {
    block-size: 100%;
    inline-size: calc(var(--nitro-count, 0) * 10%);
    max-inline-size: 100%;
    background: linear-gradient(90deg, #00b0ff, #00e5ff, #ffffff);
    transition: inline-size 0.12s ease;
  }

  .race-telemetry-card {
    background-color: rgba(14, 18, 28, 0.86);
    border: 1px solid rgba(255, 255, 255, 0.14);
    border-radius: 4px;
    padding-inline: 0.55rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 0.45rem;
    font-family: var(--font-mono);
    font-size: 0.66rem;
    white-space: nowrap;
  }

  .telemetry-headline {
    color: var(--accent-gold);
    font-weight: 700;
  }

  .rb-pill {
    padding-inline: 0.3rem;
    border-radius: 3px;
    background-color: rgba(0, 229, 255, 0.16);
    color: var(--accent-nitro);
    font-weight: 700;
  }

  /* Native Modal Dialogs */
  dialog {
    margin: auto;
    background-color: var(--bg-panel);
    color: var(--text-primary);
    border: 2px solid var(--accent-gold);
    border-radius: 10px;
    padding: 1.25rem;
    max-inline-size: 880px;
    inline-size: 92vw;
    max-block-size: 88dvh;
    overflow-y: auto;
    box-shadow: 0 24px 64px rgba(0, 0, 0, 0.85);
  }

  dialog:modal {
    overscroll-behavior: contain;
  }

  dialog::backdrop {
    background-color: rgba(6, 8, 14, 0.78);
    backdrop-filter: blur(4px);
    overflow: hidden;
    overscroll-behavior: contain;
  }

  .dialog-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-block-end: 1px solid var(--border-steel);
    padding-block-end: 0.65rem;
    margin-block-end: 0.85rem;
  }

  .dialog-header h2 {
    font-family: var(--font-display);
    color: var(--accent-gold);
    letter-spacing: 0.05em;
    font-size: 1.3rem;
  }

  .shop-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(155px, 1fr));
    gap: 0.75rem;
    margin-block-end: 1rem;
  }

  .shop-item-card {
    background-color: var(--bg-card);
    border: 1px solid var(--border-steel);
    border-radius: 8px;
    padding: 0.75rem;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    gap: 0.55rem;
  }

  .shop-item-title {
    font-weight: 700;
    color: var(--accent-gold);
    font-size: 0.85rem;
  }

  .shop-level-pips {
    display: flex;
    gap: 4px;
  }

  .shop-pip {
    flex: 1;
    block-size: 7px;
    background-color: #10141f;
    border: 1px solid var(--border-steel);
    border-radius: 2px;
  }

  .shop-pip.filled {
    background-color: var(--accent-emerald);
    border-color: #76ff03;
  }

  .asset-gallery-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 0.85rem;
  }

  .asset-card {
    background-color: var(--bg-card);
    border: 1px solid var(--border-steel);
    border-radius: 8px;
    padding: 0.65rem;
    display: flex;
    flex-direction: column;
    gap: 0.45rem;
  }

  .asset-card img {
    inline-size: 100%;
    block-size: auto;
    border-radius: 4px;
    border: 1px solid rgba(255, 255, 255, 0.15);
    background-color: #090b10;
  }

  .asset-card figcaption {
    font-family: var(--font-mono);
    font-size: 0.72rem;
    color: var(--text-muted);
  }
}