:root {
  --bg: #0a0a0f;
  --panel: #11111a;
  --border: #1e1e30;
  --accent: #00ffcc;
  --accent2: #ff4080;
  --accent3: #ffe100;
  --text: #f4f6ff;
  --muted: #9aa3c2;
  --glow: 0 0 20px rgba(0, 255, 204, .35);
  --ok: rgba(0, 255, 204, .9);
  --warn: rgba(255, 225, 0, .9);
  --bad: rgba(255, 64, 128, .92);
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  background: var(--bg);
  color: var(--text);
  font-family: 'Space Mono', monospace;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  overflow-x: hidden;
}

body::before {
  content: '';
  position: fixed;
  inset: 0;
  z-index: 0;
  background-image:
    linear-gradient(rgba(0, 255, 204, .04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0, 255, 204, .04) 1px, transparent 1px);
  background-size: 40px 40px;
  pointer-events: none;
}

header {
  position: relative;
  z-index: 1;
  width: 100%;
  max-width: 980px;
  padding: 28px 24px 0;
  display: flex;
  align-items: baseline;
  gap: 16px;
}

.langbar {
  position: fixed;
  top: 14px;
  right: 16px;
  z-index: 20;
}

.back-home {
  position: fixed;
  top: 14px;
  left: 16px;
  z-index: 20;
  width: 32px;
  height: 32px;
  border: 1px solid var(--border);
  background: rgba(17, 17, 26, 0.9);
  color: var(--text);
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
  line-height: 1;
}

.back-home:hover {
  border-color: var(--accent);
  color: var(--accent);
}

.langbtn {
  border: 1px solid var(--border);
  background: rgba(17, 17, 26, 0.9);
  color: var(--text);
  font-family: 'Space Mono', monospace;
  font-size: 0.62rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 7px 10px;
  cursor: pointer;
}

.langbtn:hover {
  border-color: var(--accent);
  color: var(--accent);
}

h1 {
  font-family: 'Unbounded', sans-serif;
  font-size: clamp(1.4rem, 3.5vw, 2.4rem);
  font-weight: 900;
  letter-spacing: -.02em;
  color: var(--accent);
  text-shadow: var(--glow);
}

h1 span {
  color: var(--accent2);
}

.subtitle {
  font-size: .65rem;
  color: var(--muted);
  letter-spacing: .12em;
  text-transform: uppercase;
  margin-top: 4px;
}

.tabs {
  position: relative;
  z-index: 1;
  display: flex;
  gap: 8px;
  margin: 20px 0 0;
}

.tab {
  padding: 9px 22px;
  border: 1px solid var(--border);
  background: var(--panel);
  color: var(--muted);
  font-family: 'Space Mono', monospace;
  font-size: .72rem;
  letter-spacing: .08em;
  cursor: pointer;
  transition: all .2s;
  text-transform: uppercase;
}

.tab.active {
  border-color: var(--accent);
  color: var(--accent);
  background: rgba(0, 255, 204, .07);
  box-shadow: var(--glow);
}

.main {
  position: relative;
  z-index: 1;
  width: 100%;
  max-width: 980px;
  padding: 16px 24px 40px;
  display: grid;
  grid-template-columns: 1fr 270px;
  gap: 14px;
}

.canvas-wrap {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 2px;
  overflow: hidden;
  position: relative;
  display: flex;
  flex-direction: column;
}

canvas {
  display: block;
  width: 100%;
  background: #000;
}

#chart-canvas {
  width: 100%;
  height: 72px;
  display: block;
  border-top: 1px solid var(--border);
}

/* ── HUD ── */
.hud {
  position: absolute;
  left: 12px;
  top: 10px;
  z-index: 6;
  display: flex;
  flex-direction: column;
  gap: 6px;
  font-size: .62rem;
  color: var(--text);
  pointer-events: none;
  text-shadow: 0 0 10px rgba(0, 0, 0, .65);
}

.hud .row {
  display: flex;
  gap: 10px;
  align-items: center;
  flex-wrap: wrap;
}

.pill {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 5px 8px;
  border: 1px solid var(--border);
  background: rgba(17, 17, 26, .75);
  backdrop-filter: blur(4px);
}

.k {
  color: var(--muted);
}

.v {
  font-family: 'Unbounded', sans-serif;
  color: var(--accent);
}

.v.warn {
  color: var(--accent3);
}

.v.bad {
  color: var(--accent2);
}

/* ── SIDEBAR & CARDS ── */
.sidebar {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.card {
  background: var(--panel);
  border: 1px solid var(--border);
  padding: 14px;
}

.card-title {
  font-size: .58rem;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 10px;
}

.stat-row {
  display: flex;
  justify-content: space-between;
  margin-bottom: 7px;
  gap: 8px;
  align-items: baseline;
}

.stat-label {
  font-size: .65rem;
  color: var(--muted);
}

.stat-val {
  font-family: 'Unbounded', sans-serif;
  font-size: 1rem;
  color: var(--accent);
  font-weight: 700;
}

.stat-val.gold {
  color: var(--accent3);
}

/* ── BUTTONS ── */
.btn {
  width: 100%;
  padding: 11px;
  border: 1px solid var(--accent);
  background: transparent;
  color: var(--accent);
  font-family: 'Space Mono', monospace;
  font-size: .72rem;
  text-transform: uppercase;
  cursor: pointer;
  transition: all .15s;
}

.btn:hover {
  background: rgba(0, 255, 204, .12);
  box-shadow: var(--glow);
}

.btn.danger {
  border-color: var(--accent2);
  color: var(--accent2);
}

.btn.danger:hover {
  background: rgba(255, 64, 128, .12);
}

.btn.secondary {
  border-color: var(--border);
  color: var(--text);
}

.btn.secondary:hover {
  background: rgba(255, 255, 255, .06);
  box-shadow: none;
}

/* ── LOGS ── */
.log {
  font-size: .58rem;
  color: var(--muted);
  line-height: 1.8;
  max-height: 130px;
  overflow-y: auto;
  padding-right: 4px;
}

.log div {
  padding: 2px 0;
}

.log .gold {
  color: var(--accent3);
}

.log .bad {
  color: var(--accent2);
}

/* ── OVERLAYS ── */
.overlay {
  position: absolute;
  inset: 0;
  z-index: 10;
  background: rgba(10, 10, 15, .92);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 12px;
  padding: 16px;
  text-align: center;
}

.overlay.hidden {
  display: none;
}

.overlay-title {
  font-family: 'Unbounded', sans-serif;
  color: var(--accent);
  font-size: 1.5rem;
  text-shadow: var(--glow);
  font-weight: 900;
}

.overlay-title span {
  color: var(--accent2);
}

.overlay-desc {
  max-width: 520px;
  font-size: .7rem;
  color: var(--muted);
  line-height: 1.7;
  border: 1px solid var(--border);
  background: rgba(17, 17, 26, .5);
  padding: 10px 12px;
}

.overlay-desc b {
  color: var(--text);
  font-weight: 700;
}

.overlay .warn,
.overlay-desc .warn {
  color: var(--accent3);
}

.overlay .bad,
.overlay-desc .bad {
  color: var(--accent2);
}

/* ── MISC ── */
.kbd {
  display: inline-block;
  padding: 1px 6px;
  border: 1px solid var(--border);
  background: rgba(255, 255, 255, .06);
  border-radius: 3px;
  font-size: .62rem;
  color: var(--text);
}

/* ── INPUTS ── */
select {
  background: var(--panel);
  border: 1px solid var(--border);
  color: var(--text);
  font-family: 'Space Mono', monospace;
  font-size: 0.68rem;
  padding: 6px 10px;
  cursor: pointer;
  width: 100%;
  margin-top: 4px;
}

input[type="range"] {
  width: 100%;
  accent-color: var(--accent);
}

.hidden {
  display: none !important;
}

/* ── RESPONSIVE ── */
@media (max-width: 1024px) {
  header {
    padding: 22px 16px 0;
  }

  .tabs {
    width: 100%;
    max-width: 980px;
    padding: 0 16px;
    flex-wrap: wrap;
  }

  .tab {
    flex: 1 1 200px;
    text-align: center;
  }

  .main {
    padding: 14px 16px 28px;
    grid-template-columns: 1fr;
  }

  .canvas-wrap {
    min-width: 0;
  }

  .sidebar {
    width: 100%;
  }
}

@media (max-width: 700px) {
  .langbar {
    top: 10px;
    right: 10px;
  }

  .back-home {
    top: 10px;
    left: 10px;
    width: 30px;
    height: 30px;
    font-size: 0.92rem;
  }

  .langbtn {
    padding: 6px 9px;
    font-size: 0.58rem;
  }

  header {
    padding: 18px 12px 0;
  }

  .subtitle {
    font-size: 0.58rem;
    letter-spacing: 0.08em;
    line-height: 1.6;
  }

  .tabs {
    margin-top: 14px;
    padding: 0 12px;
    gap: 6px;
  }

  .tab {
    padding: 8px 10px;
    font-size: 0.64rem;
    letter-spacing: 0.04em;
  }

  .main {
    padding: 10px 12px 20px;
    gap: 10px;
  }

  /* Mobile order: game area first, then action buttons, then status cards */
  .sidebar > .btn {
    order: 1;
  }

  .sidebar > .card {
    order: 2;
  }

  .card {
    padding: 11px;
  }

  .card-title {
    margin-bottom: 8px;
  }

  .stat-label {
    font-size: 0.6rem;
  }

  .stat-val {
    font-size: 0.9rem;
  }

  .overlay {
    padding: 12px;
    gap: 10px;
  }

  .overlay-title {
    font-size: 1.18rem;
  }

  .overlay-desc {
    font-size: 0.64rem;
    line-height: 1.55;
    max-width: 100%;
  }

  .btn {
    padding: 10px;
    font-size: 0.66rem;
  }
}