* { box-sizing: border-box; margin: 0; padding: 0; }
  html, body {
    width: 100%; height: 100%;
    background: #1a0e05;
    color: #fff;
    font-family: 'Trebuchet MS', 'Segoe UI', sans-serif;
    overflow: hidden;
    user-select: none;
    -webkit-user-select: none;
  }
  /* ==== Layout ==== */
  #wrap {
    position: fixed;
    inset: 0;
    background: #0d0703;
  }
  canvas {
    display: block;
    background: #2a1d10;
    cursor: crosshair;
    width: 100% !important;
    height: 100% !important;
  }
  /* ==== HUD ==== */
  .hud {
    position: absolute;
    z-index: 10;
    pointer-events: none;
    text-shadow: 0 2px 4px rgba(0,0,0,0.95);
  }
  #hudTopLeft { top: 16px; left: 16px; }
  #hudTopRight { top: 16px; right: 16px; text-align: right; }
  #hudBottomLeft { bottom: 16px; left: 16px; }
  #hudBottomRight { bottom: 16px; right: 16px; text-align: right;
    color: #888; font-size: 11px; letter-spacing: 2px; text-transform: uppercase; }
  #hudTopCenter { top: 16px; left: 50%; transform: translateX(-50%); text-align: center; }

  .stat {
    background: rgba(0,0,0,0.7);
    border: 1px solid #6a4520;
    padding: 5px 11px;
    border-radius: 2px;
    font-size: 11px;
    font-weight: 700;
    color: #c89050;
    letter-spacing: 1.5px;
    text-transform: uppercase;
    display: inline-block;
    margin-left: 6px;
  }
  .stat span {
    color: #ffd070;
    font-size: 16px;
    margin-left: 6px;
    font-weight: 900;
  }
  .stat.danger span { color: #ff6655; }
  .stat.cash span { color: #ffe080; }

  .row { display: flex; align-items: center; gap: 10px; margin-bottom: 5px; }
  .label {
    color: #b08050; font-size: 11px;
    text-transform: uppercase; letter-spacing: 2px;
    min-width: 64px; font-weight: 700;
  }
  .bar {
    width: 220px; height: 14px;
    background: rgba(0,0,0,0.75);
    border: 1px solid #6a4520;
    border-radius: 2px;
    overflow: hidden;
  }
  .bar-fill {
    height: 100%;
    background: linear-gradient(90deg, #c83030 0%, #ff5050 100%);
    transition: width 0.15s;
  }
  #ammoBar .bar-fill {
    background: linear-gradient(90deg, #b07020 0%, #ffcf40 100%);
  }
  .lives {
    display: flex; gap: 4px; margin-top: 3px;
    align-items: center;
  }
  .life-icon {
    width: 14px; height: 14px;
    background: #ffcf40;
    border: 1px solid #6a4520;
    box-shadow: inset 0 -3px 0 rgba(0,0,0,0.3);
    border-radius: 2px;
    position: relative;
  }
  .life-icon::before {
    content: ''; position: absolute;
    top: -3px; left: 50%; transform: translateX(-50%);
    width: 3px; height: 5px;
    background: #6a4520;
  }
  .life-icon.lost { opacity: 0.2; background: #444; }

  /* Mission HUD top center */
  #missionInfo {
    background: rgba(0,0,0,0.7);
    border: 1px solid #6a4520;
    padding: 6px 18px;
    border-radius: 2px;
    color: #ffcf40;
    font-size: 12px;
    letter-spacing: 2px;
    text-transform: uppercase;
    font-weight: 700;
  }
  #missionInfo .obj {
    color: #fff; font-size: 14px; margin-top: 2px;
  }
  #missionInfo .obj b { color: #ffcf40; }

  /* Active power-ups */
  #powerups {
    display: flex; gap: 8px; flex-wrap: wrap-reverse;
  }
  .pup {
    background: rgba(0,0,0,0.75);
    border: 1px solid;
    padding: 4px 10px;
    border-radius: 2px;
    font-size: 11px;
    font-weight: 700;
    letter-spacing: 1px;
    display: flex; align-items: center; gap: 6px;
    text-transform: uppercase;
  }
  .pup .icon { font-size: 14px; }
  .pup .time { color: #fff; font-variant-numeric: tabular-nums; }

  /* Wave/Boss banner */
  #banner {
    position: absolute;
    top: 28%; left: 50%;
    transform: translate(-50%, -50%);
    font-size: 64px;
    color: #ffcf40;
    text-shadow: 0 4px 20px rgba(0,0,0,1), 0 0 36px rgba(255,150,0,0.7);
    letter-spacing: 8px;
    pointer-events: none;
    opacity: 0;
    transition: opacity 0.4s;
    z-index: 6;
    font-weight: 900;
    text-align: center;
    text-transform: uppercase;
  }
  #banner.show { opacity: 1; }
  #banner.warning { color: #ff5544; text-shadow: 0 4px 20px rgba(0,0,0,1), 0 0 36px rgba(255,50,0,0.8); }
  #banner .sub { display: block; font-size: 24px; letter-spacing: 4px; color: #fff; margin-top: 8px; }

  /* Boss HP bar */
  #bossBar {
    position: absolute;
    top: 60px; left: 50%;
    transform: translateX(-50%);
    z-index: 8;
    text-align: center;
    display: none;
  }
  #bossBar.show { display: block; }
  #bossBar .name {
    color: #ff5544; font-size: 14px; font-weight: 900;
    letter-spacing: 4px; text-transform: uppercase;
    text-shadow: 0 2px 4px rgba(0,0,0,1);
    margin-bottom: 4px;
  }
  #bossBar .bossbar {
    width: 360px; height: 14px;
    background: rgba(0,0,0,0.85);
    border: 1px solid #aa3322;
    border-radius: 2px;
    overflow: hidden;
  }
  #bossBar .bossbar-fill {
    height: 100%;
    background: linear-gradient(90deg, #aa1d1d 0%, #ff4040 50%, #ff8855 100%);
    transition: width 0.2s;
  }

  /* ===== Overlays ===== */
  .overlay {
    position: absolute;
    inset: 0;
    background: rgba(0,0,0,0.86);
    display: flex; flex-direction: column;
    align-items: center; justify-content: center;
    z-index: 20;
    backdrop-filter: blur(4px);
    -webkit-backdrop-filter: blur(4px);
    padding: 30px;
  }
  .overlay.hidden { display: none; }
  .overlay h1 {
    font-size: 76px;
    color: #ffcf40;
    letter-spacing: 10px;
    text-shadow: 0 4px 20px rgba(255, 100, 0, 0.5), 0 0 40px rgba(255, 150, 0, 0.3);
    margin-bottom: 12px;
    font-weight: 900;
  }
  .overlay h2 {
    font-size: 22px;
    color: #c89050;
    margin-bottom: 30px;
    font-weight: 400;
    letter-spacing: 6px;
    text-transform: uppercase;
  }
  .overlay h3 {
    font-size: 16px;
    color: #ffcf40;
    letter-spacing: 4px;
    text-transform: uppercase;
    margin-bottom: 12px;
    font-weight: 700;
  }
  .panel {
    background: rgba(20,12,4,0.9);
    border: 1px solid #6a4520;
    padding: 24px 30px;
    border-radius: 4px;
    margin-bottom: 22px;
    max-width: 560px;
    text-align: center;
  }
  .panel p {
    color: #ddd;
    line-height: 1.85;
    font-size: 14px;
  }
  .panel kbd {
    background: #2a1810; border: 1px solid #7a5530;
    border-bottom-width: 2px;
    padding: 2px 8px;
    border-radius: 3px;
    font-family: monospace;
    color: #ffcf40;
    margin: 0 2px;
    font-size: 12px;
  }
  .btn {
    background: linear-gradient(180deg, #d4a017 0%, #a07810 100%);
    color: #1a0e05;
    font-weight: 900;
    font-size: 17px;
    padding: 14px 44px;
    border: 1px solid #ffcf40;
    border-radius: 3px;
    cursor: pointer;
    text-transform: uppercase;
    letter-spacing: 4px;
    transition: transform 0.1s, box-shadow 0.2s;
    font-family: inherit;
  }
  .btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 22px rgba(255,207,64,0.5);
  }
  .btn:active { transform: translateY(0); }
  .btn.secondary {
    background: linear-gradient(180deg, #555 0%, #333 100%);
    color: #ddd;
    border-color: #888;
  }
  .btn.secondary:hover { box-shadow: 0 6px 22px rgba(150,150,150,0.4); }
  .btn-row { display: flex; gap: 12px; }

  /* ===== Mission Briefing ===== */
  #briefing .panel {
    text-align: left;
    min-width: 480px;
  }
  #briefing .mission-id {
    color: #c89050;
    font-size: 12px; letter-spacing: 4px;
    text-transform: uppercase;
    margin-bottom: 4px;
  }
  #briefing .mission-name {
    color: #ffcf40;
    font-size: 32px;
    font-weight: 900;
    letter-spacing: 4px;
    margin-bottom: 18px;
    text-transform: uppercase;
  }
  #briefing .mission-name.boss {
    color: #ff5544;
    text-shadow: 0 0 16px rgba(255,80,40,0.5);
  }
  #briefing .objective-box {
    background: rgba(0,0,0,0.45);
    border-left: 3px solid #ffcf40;
    padding: 14px 18px;
    margin: 14px 0;
  }
  #briefing .objective-box .obj-label {
    font-size: 10px; color: #c89050;
    letter-spacing: 3px; text-transform: uppercase;
    margin-bottom: 6px;
  }
  #briefing .objective-box .obj-text {
    color: #fff; font-size: 16px; font-weight: 700;
  }
  #briefing .intel {
    color: #ccc; font-style: italic;
    font-size: 14px; line-height: 1.7;
    border-left: 2px solid #555;
    padding-left: 14px;
    margin: 14px 0;
  }
  #briefing .reward {
    color: #ffe080; font-size: 14px;
    text-align: right;
    margin-top: 16px;
  }

  /* ===== Mission Complete / Failed ===== */
  .stats-list {
    list-style: none; padding: 0;
    min-width: 360px;
  }
  .stats-list li {
    display: flex; justify-content: space-between;
    padding: 8px 0;
    border-bottom: 1px dashed #4a3520;
    font-size: 15px;
  }
  .stats-list li:last-child { border-bottom: none; }
  .stats-list .key {
    color: #c89050;
    text-transform: uppercase;
    letter-spacing: 2px;
    font-size: 12px;
  }
  .stats-list .val {
    color: #ffcf40;
    font-weight: 900;
    font-size: 18px;
  }
  .stats-list .val.cash { color: #ffe080; }
  .stats-list li.total { padding-top: 14px; border-top: 1px solid #6a4520; margin-top: 10px; }
  .stats-list li.total .val { font-size: 24px; }

  /* ===== Upgrade Shop ===== */
  #shop .upgrades-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 14px;
    width: 700px;
    max-width: 95vw;
    margin-bottom: 18px;
  }
  .up-card {
    background: rgba(20,12,4,0.92);
    border: 1px solid #6a4520;
    padding: 16px;
    border-radius: 3px;
    text-align: left;
    position: relative;
  }
  .up-card .name {
    color: #ffcf40;
    font-size: 16px;
    font-weight: 900;
    letter-spacing: 3px;
    text-transform: uppercase;
    margin-bottom: 4px;
  }
  .up-card .desc {
    color: #aaa;
    font-size: 12px;
    margin-bottom: 10px;
    min-height: 30px;
  }
  .up-card .level-pips {
    display: flex; gap: 4px; margin-bottom: 8px;
  }
  .up-card .pip {
    width: 28px; height: 8px;
    background: #2a1810;
    border: 1px solid #4a3520;
    border-radius: 1px;
  }
  .up-card .pip.filled {
    background: linear-gradient(90deg, #d4a017, #ffcf40);
    border-color: #ffcf40;
    box-shadow: 0 0 6px rgba(255,207,64,0.5);
  }
  .up-card .stat-line {
    color: #ddd;
    font-size: 13px;
    margin-bottom: 10px;
    font-variant-numeric: tabular-nums;
  }
  .up-card .stat-line .arrow { color: #888; margin: 0 6px; }
  .up-card .stat-line .next { color: #6dff80; font-weight: 700; }
  .up-card .buy-btn {
    background: linear-gradient(180deg, #d4a017 0%, #a07810 100%);
    color: #1a0e05;
    font-weight: 900;
    font-size: 12px;
    padding: 8px 16px;
    border: 1px solid #ffcf40;
    border-radius: 3px;
    cursor: pointer;
    text-transform: uppercase;
    letter-spacing: 2px;
    width: 100%;
    font-family: inherit;
  }
  .up-card .buy-btn:hover { transform: translateY(-1px); box-shadow: 0 4px 14px rgba(255,207,64,0.4); }
  .up-card .buy-btn:disabled, .up-card .buy-btn.disabled {
    background: #2a1810; color: #555; border-color: #4a3520;
    cursor: not-allowed; transform: none; box-shadow: none;
  }
  .up-card .buy-btn.maxed {
    background: rgba(80,200,100,0.15); color: #6dff80; border-color: #4a8050;
    cursor: default;
  }
  #shop .cash-display {
    color: #ffe080;
    font-size: 26px;
    font-weight: 900;
    letter-spacing: 3px;
    margin-bottom: 16px;
  }
  #shop .cash-display::before { content: '$ '; color: #c89050; font-size: 18px; }

  /* ==== Pause ==== */
  #pauseHint {
    position: absolute;
    bottom: 8px; left: 50%;
    transform: translateX(-50%);
    color: #6a4520;
    font-size: 10px;
    letter-spacing: 3px;
    text-transform: uppercase;
    z-index: 10;
    pointer-events: none;
  }

  /* === Logo on title screen === */
  #titleLogo {
    width: 280px;
    height: 280px;
    margin-bottom: 18px;
    image-rendering: -webkit-optimize-contrast;
    image-rendering: crisp-edges;
    filter: drop-shadow(0 8px 24px rgba(0,0,0,0.7));
  }