@import url('https://fonts.googleapis.com/css2?family=Rajdhani:ital,wght@0,600;0,700;1,700&display=swap');

/* ---------- Design tokens (sampled from the DAKPluto's Blaster badge) ---------- */
:root {
  --void: #04050c;
  --blue: #3fc9ff;
  --blue-dim: #1a8fa8;
  --red: #ff3b3f;
  --red-dim: #a4181c;
  --chrome-1: #f3f9ff;
  --chrome-2: #7c8fa6;
  --tan: #d69a5e;
  --ink: #d7f6ff;

  --accent: var(--blue);
  --accent-dim: var(--blue-dim);
  --accent-glow: rgba(63,201,255,0.5);
  --accent-glow-soft: rgba(63,201,255,0.3);
}
body.mode-math {
  --accent: var(--red);
  --accent-dim: var(--red-dim);
  --accent-glow: rgba(255,59,63,0.5);
  --accent-glow-soft: rgba(255,59,63,0.3);
}

* { box-sizing: border-box; }
html { font-size: 110%; }
html, body {
  margin: 0; padding: 0; width: 100%; height: 100%; overflow: hidden;
  background: var(--void);
  font-family: 'Courier New', ui-monospace, monospace;
  color: var(--ink);
  -webkit-user-select: none; user-select: none;
}

.screen {
  position: fixed; inset: 0;
  display: none;
  align-items: center; justify-content: center;
  flex-direction: column;
}
.screen.active { display: flex; }
.screen.overlay { background: rgba(3,5,15,0.82); z-index: 50; }

/* ---------- Type treatments echoing the badge wordmark ---------- */
.chrome-text {
  font-family: 'Rajdhani', 'Courier New', monospace;
  font-weight: 700;
  background: linear-gradient(180deg, #ffffff 0%, #ffffff 18%, #4c5f76 48%, #ffffff 62%, #b6c6da 100%);
  -webkit-background-clip: text; background-clip: text; color: transparent;
  filter: drop-shadow(0 1px 1px rgba(0,0,0,0.8)) drop-shadow(0 0 10px rgba(140,180,220,0.4));
  letter-spacing: 1px;
}
.blaster-text {
  font-family: 'Rajdhani', 'Courier New', monospace;
  font-weight: 700; font-style: italic;
  color: var(--red);
  text-shadow: 0 0 10px rgba(255,59,63,0.7), 0 0 22px rgba(255,59,63,0.4);
  letter-spacing: 1px;
}

/* ---------- Starfield backdrop for menu-type screens ---------- */
#screen-menu, #screen-setup {
  background:
    radial-gradient(1px 1px at 10% 20%, #ffffff 100%, transparent),
    radial-gradient(1px 1px at 80% 10%, #ffffff 100%, transparent),
    radial-gradient(2px 2px at 30% 70%, #9ad9ff 100%, transparent),
    radial-gradient(1px 1px at 60% 80%, #ffffff 100%, transparent),
    radial-gradient(1px 1px at 90% 60%, #9ad9ff 100%, transparent),
    radial-gradient(2px 2px at 45% 40%, #ffffff 100%, transparent),
    radial-gradient(1px 1px at 15% 90%, #ffffff 100%, transparent),
    linear-gradient(180deg, var(--void) 0%, #0a0e23 100%);
  background-size: 200% 200%;
  position: relative;
  overflow: hidden;
}

/* Perspective grid horizon, echoing the runway under the badge's ship */
.grid-floor {
  position: absolute; left: 0; right: 0; bottom: 0; height: 34vh;
  background-image:
    repeating-linear-gradient(90deg, rgba(63,201,255,0.35) 0, rgba(63,201,255,0.35) 1px, transparent 1px, transparent 48px),
    repeating-linear-gradient(0deg, rgba(63,201,255,0.25) 0, rgba(63,201,255,0.25) 1px, transparent 1px, transparent 34px);
  transform: perspective(280px) rotateX(58deg);
  transform-origin: bottom center;
  mask-image: linear-gradient(to top, black 40%, transparent 95%);
  -webkit-mask-image: linear-gradient(to top, black 40%, transparent 95%);
  pointer-events: none;
}

/* ---------- MENU (landing page) ---------- */
.menu-wrap { text-align: center; padding: 24px; max-width: 720px; width: 100%; position: relative; z-index: 1; }
.logo-badge {
  width: min(46vw, 300px); margin-bottom: 4px;
  filter: drop-shadow(0 0 30px rgba(63,201,255,0.25));
  mask-image: radial-gradient(circle, black 68%, transparent 92%);
  -webkit-mask-image: radial-gradient(circle, black 68%, transparent 92%);
}
.subtitle { color: #93b9c9; margin: 6px 0 28px; font-size: 0.95rem; }

.mode-cards { display: flex; gap: 20px; flex-wrap: wrap; justify-content: center; margin-bottom: 28px; }
.mode-card, .mode-card:visited, .mode-card:hover, .mode-card:active {
  flex: 1 1 260px; max-width: 300px;
  background: linear-gradient(160deg, rgba(30,40,70,0.7), rgba(10,14,30,0.7));
  border: 2px solid #2b5b72; border-radius: 14px;
  padding: 22px 16px; cursor: pointer; color: var(--ink);
  font-family: inherit; text-decoration: none; display: block;
  transition: transform .15s, border-color .15s, box-shadow .15s;
}
.mode-card.card-typing:hover { transform: translateY(-4px); border-color: var(--blue); box-shadow: 0 0 22px rgba(63,201,255,0.35); }
.mode-card.card-math:hover { transform: translateY(-4px); border-color: var(--red); box-shadow: 0 0 22px rgba(255,59,63,0.35); }
.mode-icon { font-size: 2.6rem; margin-bottom: 6px; }
.mode-name { font-size: 1.2rem; font-weight: bold; letter-spacing: 1px; margin-bottom: 8px; font-family: 'Rajdhani', monospace; }
.card-typing .mode-icon, .card-typing .mode-name { color: var(--blue); }
.card-math .mode-icon, .card-math .mode-name { color: var(--red); }
.mode-desc { font-size: 0.82rem; color: #9fc7d6; line-height: 1.4; }

.menu-footer { display: flex; align-items: center; justify-content: center; gap: 24px; flex-wrap: wrap; }
.volume-row { display: flex; align-items: center; gap: 8px; font-size: 0.8rem; color: #9fc7d6; }
.volume-row input[type=range] { width: 110px; }

/* ---------- Buttons ---------- */
.primary-btn, .ghost-btn, .icon-btn {
  font-family: inherit; cursor: pointer; border-radius: 10px;
  font-size: 0.95rem; letter-spacing: 0.5px;
}
.primary-btn {
  background: linear-gradient(160deg, var(--accent), var(--accent-dim));
  border: none; color: #04141a; font-weight: bold;
  padding: 12px 28px; box-shadow: 0 0 18px var(--accent-glow-soft);
  transition: transform .1s;
}
.primary-btn:hover { transform: translateY(-2px); }
.primary-btn:active { transform: translateY(0); }
.ghost-btn {
  background: transparent; border: 2px solid #3a6b7d; color: #bfe6f2;
  padding: 10px 22px; transition: border-color .15s, color .15s;
}
.ghost-btn:hover { border-color: var(--accent); color: var(--accent); }
.icon-btn {
  background: rgba(20,30,50,0.6); border: 2px solid #3a6b7d; color: var(--ink);
  width: 40px; height: 40px; border-radius: 50%; font-size: 1.1rem;
  display: flex; align-items: center; justify-content: center;
}
.icon-btn:hover { border-color: var(--accent); }

/* ---------- SETUP SCREEN ---------- */
.setup-wrap { max-width: 560px; width: 100%; padding: 24px; position: relative; z-index: 1; }
#setup-title { text-align: center; letter-spacing: 1px; font-family: 'Rajdhani', monospace; font-size: 1.8rem; }
.setup-block { margin: 22px 0; }
.setup-label { font-size: 0.9rem; color: #9fc7d6; letter-spacing: 1px; margin-bottom: 8px; text-transform: uppercase; }
.setup-hint { font-size: 0.78rem; color: #7a9aab; margin-top: 4px; line-height: 1.4; }
.level-readout { margin-top: 8px; font-size: 1.1rem; color: var(--accent); font-weight: bold; }
#level-slider { width: 100%; accent-color: var(--accent); }

.toggle-row { display: flex; gap: 14px; align-items: flex-start; }
.switch { position: relative; width: 52px; height: 28px; flex-shrink: 0; margin-top: 2px; }
.switch input { opacity: 0; width: 0; height: 0; }
.slider-pill {
  position: absolute; inset: 0; background: #223447; border-radius: 20px; cursor: pointer; transition: .2s;
}
.slider-pill::before {
  content: ""; position: absolute; width: 22px; height: 22px; left: 3px; top: 3px;
  background: var(--ink); border-radius: 50%; transition: .2s;
}
.switch input:checked + .slider-pill { background: var(--accent-dim); }
.switch input:checked + .slider-pill::before { transform: translateX(24px); background: var(--accent); }

.setup-actions { display: flex; justify-content: space-between; margin-top: 30px; }
.back-link {
  display: inline-block; text-decoration: none; margin-bottom: 18px;
  padding: 8px 16px; font-size: 0.85rem;
}
.setup-volume { justify-content: center; margin-top: 26px; }

/* ---------- GAME SCREEN ---------- */
#screen-game { padding: 0; }
#game-canvas { position: absolute; inset: 0; display: block; background: var(--void); }

.hud { position: absolute; inset: 0; pointer-events: none; }
.hud-top {
  display: flex; align-items: center; gap: 22px; padding: 14px 18px;
  pointer-events: auto; flex-wrap: wrap;
}
.hud-group { text-align: left; }
.hud-label { font-size: 0.65rem; color: #6f96a6; letter-spacing: 1.5px; }
.hud-value { font-size: 1.35rem; font-weight: bold; color: var(--accent); text-shadow: 0 0 6px var(--accent-glow-soft); font-family: 'Rajdhani', monospace; }
.hud-sublabel { font-size: 0.7rem; color: var(--accent); }
.hud-lives { display: flex; gap: 4px; font-size: 1.2rem; }
.pause-btn { margin-left: auto; }

.hud-buffer-wrap {
  position: absolute; bottom: 28px; left: 50%; transform: translateX(-50%);
  min-height: 46px;
}
.hud-buffer {
  font-size: 1.6rem; letter-spacing: 3px; color: #fff9c4;
  background: rgba(20,20,10,0.55); padding: 8px 22px; border-radius: 10px;
  border: 2px solid #7a6d2a; min-width: 40px; text-align: center;
  box-shadow: 0 0 16px rgba(255,249,196,0.25);
}
.hud-buffer:empty { border-color: transparent; background: transparent; box-shadow: none; }

.toast {
  position: absolute; top: 90px; left: 50%; transform: translateX(-50%);
  font-size: 1.1rem; font-weight: bold; color: var(--tan); text-shadow: 0 0 10px rgba(214,154,94,0.6);
  opacity: 0; transition: opacity .3s, transform .3s; pointer-events: none;
  letter-spacing: 1px; text-align: center; white-space: nowrap;
}
.toast.show { opacity: 1; transform: translateX(-50%) translateY(6px); }

/* ---------- PAUSE / GAME OVER / HIGH SCORES ---------- */
.panel {
  background: linear-gradient(160deg, rgba(20,28,48,0.95), rgba(8,12,24,0.95));
  border: 2px solid #2b5b72; border-radius: 16px; padding: 32px 36px;
  text-align: center; max-width: 480px; width: 90%;
  box-shadow: 0 0 40px rgba(0,0,0,0.5);
  max-height: 86vh; overflow-y: auto;
}
.panel h2 {
  color: var(--accent); letter-spacing: 1px; text-shadow: 0 0 10px var(--accent-glow-soft);
  margin-top: 0; font-family: 'Rajdhani', monospace; font-size: 1.6rem;
}
.panel .primary-btn, .panel .ghost-btn { display: block; width: 100%; margin: 10px 0; }

.stats-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; margin: 20px 0; }
.stat { background: rgba(255,255,255,0.04); border-radius: 10px; padding: 10px; }
.stat-wide { grid-column: 1 / -1; }
.stat-label { font-size: 0.7rem; color: #9fc7d6; letter-spacing: 1px; }
.stat-value { font-size: 1.3rem; font-weight: bold; color: var(--accent); font-family: 'Rajdhani', monospace; }

.hs-entry { margin-bottom: 16px; }
.hs-entry-title {
  color: var(--tan); font-weight: bold; letter-spacing: 1px; margin-bottom: 10px;
  text-shadow: 0 0 10px rgba(214,154,94,0.6); font-family: 'Rajdhani', monospace; font-size: 1.05rem;
}
.hs-entry-row { display: flex; gap: 8px; }
.hs-entry-row input {
  flex: 1; min-width: 0; font-family: inherit; font-size: 0.95rem; color: var(--ink);
  background: rgba(20,20,10,0.4); border: 2px solid var(--tan); border-radius: 8px;
  padding: 10px 12px; outline: none;
}
.hs-entry-row input:focus { box-shadow: 0 0 10px rgba(214,154,94,0.4); }
.hs-save-btn { width: auto !important; margin: 0 !important; padding: 10px 20px; flex-shrink: 0; }
.hs-entry-saved {
  color: var(--tan); font-weight: bold; letter-spacing: 1px;
  text-shadow: 0 0 10px rgba(214,154,94,0.6); font-family: 'Rajdhani', monospace; font-size: 1.05rem;
}

.hs-tabs { display: flex; gap: 8px; justify-content: center; margin-bottom: 14px; }
.hs-tab {
  background: transparent; border: 2px solid #3a6b7d; color: #bfe6f2; border-radius: 8px;
  padding: 6px 14px; cursor: pointer; font-family: inherit; font-size: 0.85rem;
}
.hs-tab.active { border-color: var(--accent); color: var(--accent); }
.hs-list { list-style: none; padding: 0; margin: 0 0 18px; text-align: left; max-height: 300px; overflow-y: auto; }
.hs-list li {
  display: flex; justify-content: space-between; padding: 8px 12px; border-radius: 8px;
  background: rgba(255,255,255,0.03); margin-bottom: 6px; font-size: 0.95rem;
}
.hs-list li .hs-rank { color: var(--accent); font-weight: bold; margin-right: 10px; }
.hs-list .hs-empty { color: #7a9aab; text-align: center; padding: 12px; }

@media (max-width: 480px) {
  .hud-top { gap: 12px; }
  .hud-value { font-size: 1.1rem; }
  .mode-cards { flex-direction: column; align-items: center; }
}