:root {
  --bg-0: #05060c;
  --bg-1: #0c1024;
  --panel: rgba(14, 18, 36, 0.82);
  --panel-border: rgba(90, 160, 255, 0.22);
  --cyan: #33e6ff;
  --magenta: #ff5fd6;
  --violet: #7a5cff;
  --gold: #ffd23f;
  --red: #ff4d5e;
  --ink: #e8f3ff;
  --ink-dim: rgba(232, 243, 255, 0.6);
  --radius-lg: 18px;
  --radius-md: 12px;
  color-scheme: dark;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg-0);
  color: var(--ink);
  font-family: 'Rajdhani', 'Segoe UI', system-ui, -apple-system, sans-serif;
  -webkit-tap-highlight-color: transparent;
}

body { line-height: 1.55; }

a { color: var(--cyan); }

.site-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  max-width: 1100px;
  margin: 0 auto;
  padding: 16px 18px 8px;
}
.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: 'Orbitron', 'Rajdhani', sans-serif;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-decoration: none;
  color: var(--ink);
}
.brand-logo {
  width: 30px; height: 30px;
  border-radius: 8px;
  background: radial-gradient(circle at 35% 30%, var(--cyan), #0b1330 70%);
  box-shadow: 0 0 16px rgba(51, 230, 255, 0.55);
}
.header-nav a {
  color: var(--ink-dim);
  text-decoration: none;
  font-size: 0.9rem;
  margin-left: 16px;
}
.header-nav a:hover { color: var(--cyan); }

main { max-width: 1100px; margin: 0 auto; padding: 0 18px 60px; }

.game-hero { text-align: center; margin: 6px 0 18px; }
.game-hero h1 {
  font-family: 'Orbitron', 'Rajdhani', sans-serif;
  font-size: clamp(1.6rem, 4vw, 2.4rem);
  letter-spacing: 0.03em;
  margin: 0 0 6px;
  background: linear-gradient(90deg, var(--cyan), var(--magenta));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.game-hero p.tagline {
  color: var(--ink-dim);
  margin: 0;
  font-size: 1rem;
}

.game-stage-wrap {
  position: relative;
  width: 100%;
  max-width: 1100px;
  margin: 0 auto;
  aspect-ratio: 16 / 9;
  min-height: 380px;
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--panel-border);
  box-shadow: 0 0 0 1px rgba(0,0,0,0.4), 0 20px 60px rgba(0, 10, 40, 0.55);
  touch-action: none;
  user-select: none;
}
@media (max-width: 640px) {
  .game-stage-wrap { aspect-ratio: 9 / 14; min-height: 520px; }
}

#game-canvas {
  position: absolute;
  inset: 0;
  display: block;
  touch-action: none;
}

.hud {
  position: absolute;
  top: 0; left: 0; right: 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 16px;
  pointer-events: none;
  font-family: 'Orbitron', 'Rajdhani', sans-serif;
  z-index: 5;
}
.hud-left, .hud-right { display: flex; align-items: baseline; gap: 10px; }
.hud-target-count { font-size: clamp(0.95rem, 2.4vw, 1.2rem); color: var(--ink); text-shadow: 0 0 10px rgba(51,230,255,0.5); }
.hud-timer { font-size: clamp(1.1rem, 3vw, 1.5rem); font-weight: 700; color: var(--cyan); text-shadow: 0 0 14px rgba(51,230,255,0.65); font-variant-numeric: tabular-nums; }
.hud-combo { font-size: 0.95rem; color: var(--gold); text-shadow: 0 0 10px rgba(255,210,63,0.6); min-width: 90px; text-align: right; }
.hud-buttons { pointer-events: auto; display: flex; gap: 8px; }

.icon-btn {
  pointer-events: auto;
  background: rgba(10, 14, 30, 0.6);
  border: 1px solid var(--panel-border);
  color: var(--ink);
  width: 38px; height: 38px;
  border-radius: 10px;
  font-size: 1.1rem;
  cursor: pointer;
  display: flex; align-items: center; justify-content: center;
  backdrop-filter: blur(6px);
  transition: transform 0.15s ease, border-color 0.15s ease;
}
.icon-btn:hover { border-color: var(--cyan); transform: translateY(-1px); }
.icon-btn:active { transform: scale(0.94); }

.overlay-screen {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 16px;
  text-align: center;
  padding: 24px;
  background: radial-gradient(circle at 50% 30%, rgba(20, 26, 54, 0.92), rgba(4, 6, 14, 0.96));
  backdrop-filter: blur(3px);
  z-index: 10;
}
.overlay-screen[hidden] { display: none; }

.panel {
  background: var(--panel);
  border: 1px solid var(--panel-border);
  border-radius: var(--radius-lg);
  padding: 26px 28px;
  max-width: 420px;
  width: 100%;
  box-shadow: 0 0 40px rgba(51, 230, 255, 0.08);
}

.idle-title {
  font-family: 'Orbitron', 'Rajdhani', sans-serif;
  font-size: clamp(1.4rem, 4vw, 2rem);
  letter-spacing: 0.08em;
  margin: 0 0 4px;
  color: var(--ink);
}
.idle-sub { color: var(--ink-dim); margin: 0 0 18px; font-size: 0.95rem; }
.idle-best-time {
  display: inline-block;
  margin-bottom: 14px;
  padding: 5px 14px;
  border-radius: 999px;
  border: 1px solid rgba(255, 210, 63, 0.4);
  color: var(--gold);
  font-weight: 700;
  letter-spacing: 0.04em;
}

.btn {
  font-family: 'Orbitron', 'Rajdhani', sans-serif;
  font-weight: 700;
  letter-spacing: 0.05em;
  border: none;
  border-radius: var(--radius-md);
  padding: 14px 28px;
  font-size: 1.05rem;
  cursor: pointer;
  color: #04101a;
  background: linear-gradient(90deg, var(--cyan), #58f2ff);
  box-shadow: 0 0 26px rgba(51, 230, 255, 0.45);
  transition: transform 0.12s ease, box-shadow 0.12s ease;
}
.btn:hover { transform: translateY(-2px); box-shadow: 0 0 34px rgba(51, 230, 255, 0.6); }
.btn:active { transform: translateY(0) scale(0.98); }
.btn.secondary {
  background: rgba(20, 26, 54, 0.7);
  color: var(--ink);
  border: 1px solid var(--panel-border);
  box-shadow: none;
}
.btn.secondary:hover { border-color: var(--cyan); }
.btn.ghost {
  background: transparent;
  color: var(--ink-dim);
  border: 1px solid transparent;
  box-shadow: none;
  padding: 10px 16px;
}
.btn.ghost:hover { color: var(--ink); }
.btn:disabled { opacity: 0.6; cursor: not-allowed; transform: none; }

.btn-row { display: flex; gap: 10px; flex-wrap: wrap; justify-content: center; }

.countdown-num {
  font-family: 'Orbitron', sans-serif;
  font-size: clamp(4rem, 16vw, 8rem);
  font-weight: 900;
  color: var(--cyan);
  text-shadow: 0 0 40px rgba(51, 230, 255, 0.8);
}
.countdown-num.go { color: var(--gold); text-shadow: 0 0 50px rgba(255, 210, 63, 0.9); }
.countdown-label { color: var(--ink-dim); letter-spacing: 0.2em; font-size: 0.85rem; }

.paused-title { font-family: 'Orbitron', sans-serif; font-size: 1.6rem; letter-spacing: 0.1em; }

.result-title { font-family: 'Orbitron', sans-serif; font-size: 1.3rem; letter-spacing: 0.08em; color: var(--ink-dim); }
.result-time { font-family: 'Orbitron', sans-serif; font-size: clamp(2.2rem, 7vw, 3.2rem); font-weight: 900; color: var(--cyan); text-shadow: 0 0 30px rgba(51,230,255,0.6); margin: 4px 0 10px; }
.result-badges { display: flex; gap: 8px; flex-wrap: wrap; justify-content: center; margin-bottom: 10px; }
.badge { padding: 5px 12px; border-radius: 999px; font-size: 0.82rem; font-weight: 700; letter-spacing: 0.03em; }
.badge.best { background: rgba(255, 210, 63, 0.15); color: var(--gold); border: 1px solid rgba(255,210,63,0.4); }
.badge.rank { background: rgba(122, 92, 255, 0.18); color: #b7a6ff; border: 1px solid rgba(122,92,255,0.4); }
.submit-status { font-size: 0.82rem; margin: 0 0 4px; min-height: 1.1em; }
.submit-status.ok { color: #7be89e; }
.submit-status.warn { color: #ffcf6b; }
.submit-status.muted { color: var(--ink-dim); }

.result-stats { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; margin: 14px 0 18px; }
.stat { background: rgba(255,255,255,0.03); border: 1px solid rgba(255,255,255,0.06); border-radius: 10px; padding: 10px 6px; }
.stat .num { font-size: 1.2rem; font-weight: 700; color: var(--ink); }
.stat .lbl { font-size: 0.72rem; color: var(--ink-dim); letter-spacing: 0.06em; text-transform: uppercase; }

.nickname-field { display: flex; flex-direction: column; gap: 8px; margin: 14px 0; }
.nickname-field input {
  background: rgba(0,0,0,0.35);
  border: 1px solid var(--panel-border);
  border-radius: var(--radius-md);
  padding: 12px 14px;
  color: var(--ink);
  font-size: 1rem;
  font-family: inherit;
  text-align: center;
}
.nickname-field input:focus { outline: none; border-color: var(--cyan); box-shadow: 0 0 0 3px rgba(51,230,255,0.15); }
.field-error { color: var(--red); font-size: 0.85rem; min-height: 1.1em; }

.leaderboard-tabs { display: flex; gap: 6px; margin-bottom: 12px; }
.lb-tab {
  flex: 1;
  background: rgba(255,255,255,0.03);
  border: 1px solid var(--panel-border);
  color: var(--ink-dim);
  padding: 8px 10px;
  border-radius: 8px;
  cursor: pointer;
  font-family: inherit;
  font-weight: 700;
  font-size: 0.8rem;
  letter-spacing: 0.04em;
}
.lb-tab.active { color: var(--bg-0); background: var(--cyan); border-color: var(--cyan); }
.leaderboard-table { width: 100%; border-collapse: collapse; font-size: 0.92rem; }
.leaderboard-table th { text-align: left; color: var(--ink-dim); font-weight: 600; padding: 6px 8px; border-bottom: 1px solid var(--panel-border); font-size: 0.78rem; text-transform: uppercase; letter-spacing: 0.06em; }
.leaderboard-table td { padding: 8px; border-bottom: 1px solid rgba(255,255,255,0.05); }
.leaderboard-table tbody tr:first-child td { color: var(--gold); }
.lb-loading, .lb-empty { text-align: center; color: var(--ink-dim); padding: 18px 0 !important; }
.leaderboard-scroll { max-height: 320px; overflow-y: auto; }

.challenge-banner {
  background: rgba(122, 92, 255, 0.15);
  border: 1px solid rgba(122, 92, 255, 0.4);
  color: #cfc3ff;
  padding: 8px 14px;
  border-radius: 10px;
  font-size: 0.85rem;
  margin-bottom: 14px;
}

.offline-notice {
  background: rgba(255, 77, 94, 0.12);
  border: 1px solid rgba(255, 77, 94, 0.35);
  color: #ffb3ba;
  padding: 7px 12px;
  border-radius: 8px;
  font-size: 0.82rem;
  margin-top: 10px;
}

/* ---- SEO / content sections below the game ---- */
.content-section { margin-top: 42px; }
.content-section h2 {
  font-family: 'Orbitron', 'Rajdhani', sans-serif;
  font-size: 1.3rem;
  letter-spacing: 0.03em;
  color: var(--ink);
  border-left: 3px solid var(--cyan);
  padding-left: 12px;
  margin-bottom: 14px;
}
.content-section p { color: var(--ink-dim); max-width: 760px; }
.how-to-steps { display: grid; grid-template-columns: repeat(auto-fit, minmax(160px, 1fr)); gap: 14px; margin-top: 10px; }
.how-to-steps div { background: rgba(255,255,255,0.03); border: 1px solid rgba(255,255,255,0.07); border-radius: 12px; padding: 14px; }
.how-to-steps .step-num { color: var(--cyan); font-weight: 800; font-family: 'Orbitron', sans-serif; font-size: 1.1rem; }
.faq-item { margin-bottom: 16px; }
.faq-item h3 { color: var(--ink); font-size: 1rem; margin: 0 0 6px; }
.faq-item p { margin: 0; }
.related-games { display: flex; gap: 10px; flex-wrap: wrap; margin-top: 10px; }
.related-games a {
  background: rgba(255,255,255,0.03);
  border: 1px solid var(--panel-border);
  color: var(--ink);
  text-decoration: none;
  padding: 9px 16px;
  border-radius: 999px;
  font-size: 0.88rem;
}
.related-games a:hover { border-color: var(--cyan); color: var(--cyan); }

.ad-slot { max-width: 1100px; margin: 24px auto; min-height: 90px; display: flex; align-items: center; justify-content: center; color: rgba(255,255,255,0.15); font-size: 0.8rem; border: 1px dashed rgba(255,255,255,0.08); border-radius: 10px; }

.site-footer {
  max-width: 1100px;
  margin: 40px auto 0;
  padding: 18px;
  color: var(--ink-dim);
  font-size: 0.82rem;
  text-align: center;
  border-top: 1px solid rgba(255,255,255,0.06);
}

@media (prefers-reduced-motion: reduce) {
  .btn, .icon-btn { transition: none; }
}

@media (max-width: 560px) {
  .header-nav a:not(:first-child) { display: none; }
  .site-header { padding: 12px 14px 4px; }
  .hud { padding: 10px 10px; }
  .hud-left, .hud-right { gap: 6px; }
  .hud-combo { min-width: 0; }
}