:root {
  --bg: #07070b;
  --navy: #131a3d;
  --navy-deep: #0b1029;
  --amber: #DDBF5A;
  --amber-dim: #7a5600;
  --up: #00d68f;
  --down: #ff4757;
  --ink: #eae7dd;
  --ink-dim: #8b8a86;
  --line: #2a2a33;
  font-size: 16px;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  height: 100%;
  background: var(--bg);
  color: var(--ink);
  font-family: 'IBM Plex Mono', ui-monospace, monospace;
  overflow: hidden;
  -webkit-tap-highlight-color: transparent;
  user-select: none;
}

.scanlines {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 50;
  background: repeating-linear-gradient(
    to bottom,
    rgba(255, 255, 255, 0.012) 0px,
    rgba(255, 255, 255, 0.012) 1px,
    transparent 1px,
    transparent 3px
  );
  mix-blend-mode: overlay;
}

/* ---------- Top bar ---------- */
.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 56px;
  padding: 0 18px;
  background: linear-gradient(180deg, #0f1024, #08080f);
  border-bottom: 1px solid var(--line);
}

.topbar__brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: 'Space Grotesk', sans-serif;
}
.brand__mark { color: var(--amber); font-size: 1rem; }
.brand__name {
  font-weight: 700;
  letter-spacing: 0.14em;
  font-size: 1rem;
  color: var(--ink);
}
.brand__ticker {
  font-size: 0.72rem;
  color: var(--bg);
  background: var(--amber);
  padding: 2px 7px;
  border-radius: 3px;
  font-weight: 600;
  letter-spacing: 0.05em;
}

.topbar__price {
  display: flex;
  align-items: baseline;
  gap: 10px;
}
.price__value {
  font-size: 1.3rem;
  font-weight: 600;
  font-variant-numeric: tabular-nums;
}
.price__delta {
  font-size: 0.82rem;
  font-variant-numeric: tabular-nums;
  color: var(--ink-dim);
}
.price__delta.up { color: var(--up); }
.price__delta.down { color: var(--down); }

.topbar__clock {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  line-height: 1.25;
}
.clock__label {
  font-size: 0.6rem;
  color: var(--ink-dim);
  letter-spacing: 0.14em;
}
.clock__value {
  font-size: 0.95rem;
  font-variant-numeric: tabular-nums;
  color: var(--amber);
}

/* ---------- Nerve bar (signature element) ---------- */
.nervebar {
  position: relative;
  height: 6px;
  background: #1a1a22;
  overflow: hidden;
}
.nervebar__fill {
  position: absolute;
  inset: 0;
  width: 0%;
  background: linear-gradient(90deg, var(--ink-dim), var(--ink-dim));
  transition: width 0.12s linear, background 0.2s ease;
}
.nervebar__fill.flat { background: linear-gradient(90deg, #3a3a44, #3a3a44); }
.nervebar__fill.gain { background: linear-gradient(90deg, #0a5c3f, var(--up)); box-shadow: 0 0 12px rgba(0,214,143,0.5); }
.nervebar__fill.loss { background: linear-gradient(90deg, #5c0a1a, var(--down)); box-shadow: 0 0 12px rgba(255,71,87,0.5); }
.nervebar__pulse {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  opacity: 0.6;
}
.nervebar__pulse polyline {
  fill: none;
  stroke: rgba(255,255,255,0.35);
  stroke-width: 1;
}

/* ---------- Stage / chart ---------- */
.stage {
  position: relative;
  width: 100%;
  height: calc(100% - 62px);
}

#chart {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  display: block;
  touch-action: none;
  cursor: pointer;
}

.hint {
  position: absolute;
  left: 18px;
  bottom: 18px;
  max-width: 320px;
  padding: 10px 14px;
  background: rgba(20, 24, 46, 0.88);
  border: 1px solid var(--line);
  border-radius: 6px;
  font-size: 0.78rem;
  line-height: 1.4;
  color: var(--ink);
  display: flex;
  gap: 8px;
  align-items: flex-start;
  transition: opacity 0.4s ease;
  pointer-events: none;
}
.hint__icon { color: var(--amber); }
.hint.hidden { opacity: 0; }

.hud {
  position: absolute;
  top: 16px;
  right: 16px;
  display: flex;
  gap: 10px;
}
.hud__block {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  background: rgba(19, 26, 61, 0.7);
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 6px 12px;
  min-width: 84px;
}
.hud__label { font-size: 0.58rem; color: var(--ink-dim); letter-spacing: 0.12em; }
.hud__value { font-size: 0.95rem; font-variant-numeric: tabular-nums; font-weight: 600; }
.hud__value.gain { color: var(--up); }
.hud__value.loss { color: var(--down); }
.hud__value.holding { color: var(--amber); }

.floaters {
  position: absolute;
  inset: 0;
  pointer-events: none;
  z-index: 20;
}
.floater {
  position: absolute;
  font-weight: 700;
  font-size: 1rem;
  font-variant-numeric: tabular-nums;
  animation: floatUp 1s ease-out forwards;
  text-shadow: 0 0 8px rgba(0,0,0,0.6);
}
.floater.gain { color: var(--up); }
.floater.loss { color: var(--down); }
@keyframes floatUp {
  0% { transform: translateY(0); opacity: 1; }
  100% { transform: translateY(-46px); opacity: 0; }
}

.startbtn {
  position: absolute;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
  padding: 16px 36px;
  font-family: 'Space Grotesk', sans-serif;
  font-weight: 700;
  letter-spacing: 0.12em;
  font-size: 0.95rem;
  background: var(--amber);
  color: #1a1200;
  border: none;
  border-radius: 8px;
  cursor: pointer;
  box-shadow: 0 0 0 0 rgba(255,176,0,0.5);
  animation: pulseGlow 2.2s ease-in-out infinite;
}
.startbtn:active { transform: translate(-50%, -50%) scale(0.97); }
.startbtn.hidden { display: none; }
@keyframes pulseGlow {
  0%, 100% { box-shadow: 0 0 0 0 rgba(255,176,0,0.35); }
  50% { box-shadow: 0 0 0 14px rgba(255,176,0,0); }
}

/* ---------- Game over overlay ---------- */
.overlay {
  position: fixed;
  inset: 0;
  z-index: 100;
  background: rgba(4, 4, 8, 0.86);
  backdrop-filter: blur(4px);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
}
.overlay[hidden] {
  display: none;
}
.overlay__panel {
  width: 100%;
  max-width: 420px;
  background: linear-gradient(180deg, #12142a, #0a0a14);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 26px 26px 22px;
  max-height: 92vh;
  overflow-y: auto;
}
.overlay__title {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 1.4rem;
  letter-spacing: 0.08em;
  margin: 0 0 2px;
  color: var(--amber);
}
.overlay__subtitle {
  margin: 0 0 18px;
  color: var(--ink-dim);
  font-size: 0.82rem;
}
.overlay__stats {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
  margin-bottom: 20px;
}
.overlay__stats div {
  background: rgba(255,255,255,0.03);
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 10px 12px;
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.overlay__stats span { font-size: 0.62rem; color: var(--ink-dim); letter-spacing: 0.1em; }
.overlay__stats strong { font-size: 1.05rem; font-variant-numeric: tabular-nums; }

.overlay__ceiling {
  background: rgba(255,176,0,0.06);
  border: 1px solid rgba(255,176,0,0.25);
  border-radius: 8px;
  padding: 12px 14px;
  margin-bottom: 20px;
}
.ceiling__row {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  font-size: 0.76rem;
  color: var(--ink-dim);
}
.ceiling__row strong {
  font-size: 0.9rem;
  color: var(--ink);
  font-variant-numeric: tabular-nums;
}
.ceiling__pct { color: var(--amber) !important; font-size: 1rem !important; }
.ceiling__track {
  height: 6px;
  border-radius: 3px;
  background: rgba(255,255,255,0.08);
  margin: 8px 0;
  overflow: hidden;
}
.ceiling__fill {
  height: 100%;
  width: 0%;
  background: linear-gradient(90deg, #7a5600, var(--amber));
  transition: width 0.6s ease;
}

.overlay__form {
  display: flex;
  gap: 8px;
  margin-bottom: 22px;
}
.overlay__form input {
  flex: 1;
  background: #0e0e18;
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 10px 12px;
  color: var(--ink);
  font-family: inherit;
  font-size: 0.85rem;
  letter-spacing: 0.05em;
}
.overlay__form input:focus { outline: 1px solid var(--amber); }
.overlay__form button {
  background: var(--amber);
  color: #1a1200;
  border: none;
  border-radius: 6px;
  padding: 0 14px;
  font-family: inherit;
  font-weight: 700;
  font-size: 0.72rem;
  letter-spacing: 0.06em;
  cursor: pointer;
}
.overlay__form button:disabled { opacity: 0.5; cursor: default; }

.overlay__boardtitle {
  font-size: 0.68rem;
  letter-spacing: 0.14em;
  color: var(--ink-dim);
  margin: 0 0 10px;
}
.leaderboard {
  list-style: none;
  margin: 0 0 22px;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.leaderboard li {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 7px 10px;
  background: rgba(255,255,255,0.03);
  border-radius: 5px;
  font-size: 0.82rem;
}
.lb__rank { color: var(--amber); width: 28px; }
.lb__name { flex: 1; letter-spacing: 0.03em; }
.lb__score { font-variant-numeric: tabular-nums; font-weight: 600; }
.leaderboard__empty { color: var(--ink-dim); font-size: 0.8rem; justify-content: center; }

.overlay__again {
  width: 100%;
  padding: 12px;
  background: transparent;
  color: var(--ink);
  border: 1px solid var(--line);
  border-radius: 8px;
  font-family: inherit;
  font-weight: 600;
  letter-spacing: 0.08em;
  cursor: pointer;
}
.overlay__again:hover { border-color: var(--amber); color: var(--amber); }

.back_to_darson {
  width: 100%;
  padding: 12px;
  background: red;
  color: white;
  border: 1px solid var(--line);
  border-radius: 8px;
  font-family: inherit;
  font-weight: 600;
  letter-spacing: 0.08em;
  cursor: pointer;
  margin-top:20px;
}
.back_to_darson:hover { border-color: var(--amber); color: var(--amber); }

@media (max-width: 480px) {
  .topbar__clock { display: none; }
  .hud { top: auto; bottom: 18px; right: 18px; }
  .hint { max-width: 220px; font-size: 0.7rem; }
}