:root {
  --bg: #05070c;
  --panel: #0d121c;
  --neon-cyan: #37e6e6;
  --neon-magenta: #ff2fb0;
  --neon-red: #ff3b3b;
  --neon-green: #3cff6a;
  --neon-yellow: #ffd23c;
  --border: #1e2635;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: radial-gradient(ellipse at center, #0c1220 0%, #05070c 70%);
  color: #dfe6f0;
  font-family: 'Consolas', 'Courier New', monospace;
  min-height: 100vh;
}

.crt-wrap {
  position: relative;
  max-width: 1020px;
  margin: 0 auto;
  padding: 18px 20px 32px;
}

.scanlines {
  pointer-events: none;
  position: fixed;
  inset: 0;
  background: repeating-linear-gradient(
    to bottom,
    rgba(255,255,255,0.025) 0px,
    rgba(255,255,255,0.025) 1px,
    transparent 2px,
    transparent 3px
  );
  mix-blend-mode: overlay;
  z-index: 50;
}

.title-block { text-align: center; margin-bottom: 8px; }

.neon-title {
  font-size: clamp(26px, 5vw, 42px);
  letter-spacing: 3px;
  margin: 6px 0 4px;
  color: var(--neon-cyan);
  text-shadow:
    0 0 6px var(--neon-cyan),
    0 0 18px var(--neon-cyan),
    0 0 34px rgba(55,230,230,0.5);
}
.neon-title .blink { color: var(--neon-magenta); animation: blink 1s steps(1) infinite; }
@keyframes blink { 50% { opacity: 0.2; } }

.subtitle {
  color: #9fb0c9;
  font-size: 13px;
  margin: 0 0 10px;
}
.subtitle b { color: var(--neon-yellow); }

.scene-tabs {
  display: flex;
  justify-content: center;
  gap: 10px;
  margin-bottom: 12px;
  flex-wrap: wrap;
}
.scene-tab {
  background: var(--panel);
  border: 2px solid var(--border);
  color: #8ea0bd;
  padding: 8px 14px;
  border-radius: 8px;
  font-family: inherit;
  font-size: 12px;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 6px;
  transition: all 0.15s;
}
.scene-tab .scene-icon { font-size: 18px; }
.scene-tab:hover { border-color: var(--neon-cyan); color: #fff; }
.scene-tab.active {
  border-color: var(--neon-magenta);
  color: #fff;
  box-shadow: 0 0 12px rgba(255,47,176,0.5);
  background: #17101c;
}

.stage {
  position: relative;
  border: 3px solid var(--border);
  border-radius: 10px;
  overflow: hidden;
  box-shadow: 0 0 0 1px #000, 0 0 30px rgba(55,230,230,0.08) inset, 0 10px 40px rgba(0,0,0,0.6);
  background: #000;
}
#gameCanvas {
  display: block;
  width: 100%;
  height: auto;
  background: #000;
}

.tension-bar-wrap {
  position: relative;
  height: 8px;
  background: #0a0e16;
  border-top: 1px solid var(--border);
}
.tension-bar {
  height: 100%;
  width: 0%;
  background: linear-gradient(90deg, var(--neon-green), var(--neon-yellow), var(--neon-red));
  transition: width 0.05s linear;
  box-shadow: 0 0 8px rgba(255,59,59,0.6);
}
.tension-window {
  position: absolute;
  top: -2px;
  height: 12px;
  background: rgba(255,255,255,0.85);
  box-shadow: 0 0 10px #fff, 0 0 18px var(--neon-cyan);
  border-radius: 2px;
  pointer-events: none;
}

.result-overlay[hidden] { display: none; }
.result-overlay {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  background: rgba(0,0,0,0.72);
  backdrop-filter: blur(2px);
  animation: popIn 0.25s ease-out;
}
@keyframes popIn {
  from { opacity: 0; transform: scale(0.85); }
  to { opacity: 1; transform: scale(1); }
}
.result-grade {
  font-size: 96px; /* fallback; script.js sets an exact inline size that fits the grade text's width */
  font-weight: bold;
  letter-spacing: 1px;
  line-height: 1.05;
  padding: 0 14px;
  text-align: center;
  white-space: nowrap;
}
.result-overlay.success .result-grade { color: var(--neon-green); text-shadow: 0 0 24px var(--neon-green), 0 0 50px rgba(60,255,106,0.5); }
.result-overlay.fail .result-grade { color: var(--neon-red); text-shadow: 0 0 24px var(--neon-red), 0 0 50px rgba(255,59,59,0.5); }
.result-detail {
  margin-top: 14px;
  font-size: clamp(38px, 3vw, 52px);
  color: #dfe6f0;
  text-align: center;
  line-height: 1.5;
  padding: 0 16px;
}
.result-detail b { color: var(--neon-yellow); font-size: 1.1em; }
.result-detail .note-bad { color: #ff8080; }
.result-detail .note-warn { color: #ffb74d; }

.display-panel {
  margin: 16px auto 6px;
  max-width: 420px;
  background: linear-gradient(180deg, #0a0e0a, #050705);
  border: 2px solid #1a2a1a;
  border-radius: 10px;
  padding: 10px 20px 14px;
  text-align: center;
  box-shadow: inset 0 0 20px rgba(0,0,0,0.7);
}
.display-label {
  font-size: 11px;
  letter-spacing: 4px;
  color: #4a6a4a;
}
.timer-display {
  font-size: clamp(48px, 10vw, 72px);
  font-weight: bold;
  letter-spacing: 4px;
  color: #ff3b3b;
  text-shadow: 0 0 8px #ff3b3b, 0 0 24px rgba(255,59,59,0.6);
  font-variant-numeric: tabular-nums;
  line-height: 1.1;
}
.target-label {
  font-size: 12px;
  letter-spacing: 2px;
  color: #6a7a8a;
  margin-top: 2px;
}

.prompt {
  text-align: center;
  font-size: 15px;
  color: var(--neon-yellow);
  margin: 10px 0;
  letter-spacing: 1px;
  animation: pulse 1.4s ease-in-out infinite;
}
@keyframes pulse { 0%,100% { opacity: 1; } 50% { opacity: 0.4; } }

.controls-row {
  display: flex;
  justify-content: center;
  gap: 10px;
  margin: 10px 0 14px;
}
.arcade-btn {
  font-family: inherit;
  font-size: 13px;
  letter-spacing: 1px;
  padding: 12px 22px;
  border-radius: 8px;
  border: 2px solid var(--border);
  background: #10151f;
  color: #cfe0f0;
  cursor: pointer;
  transition: all 0.15s;
}
.arcade-btn:hover { border-color: var(--neon-cyan); color: #fff; }
.arcade-btn:active { transform: translateY(1px); }
.arcade-btn.primary {
  border-color: var(--neon-magenta);
  color: #fff;
  box-shadow: 0 0 14px rgba(255,47,176,0.35);
}

.stats-bar {
  display: flex;
  justify-content: center;
  gap: 26px;
  flex-wrap: wrap;
  margin-bottom: 16px;
}
.stat { text-align: center; }
.stat-label { display: block; font-size: 10px; letter-spacing: 2px; color: #6a7a8a; }
.stat-val { display: block; font-size: 20px; color: var(--neon-cyan); font-weight: bold; }

.howto {
  max-width: 760px;
  margin: 0 auto;
  font-size: 12px;
  line-height: 1.7;
  color: #8ea0bd;
  border-top: 1px solid var(--border);
  padding-top: 12px;
}
.howto b { color: #cfe0f0; }