@import url("https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&display=swap");

:root {
  color-scheme: light dark;
  --bg: #f7f7f7;
  --surface: #ffffff;
  --surface-2: #fafafa;
  --text: #111111;
  --muted: #6b6b6b;
  --border: #e2e2e2;
  --accent: #000000;
  --accent-soft: rgba(0, 0, 0, 0.06);
  --shadow: 0 18px 50px rgba(0, 0, 0, 0.08);
  --shadow-sm: 0 8px 24px rgba(0, 0, 0, 0.06);
  --radius: 16px;
  --radius-sm: 10px;
  --grid: rgba(0, 0, 0, 0.06);
  --canvas-bg: #ffffff;
  --track: #dedede;
  --thumb: #111111;
  --pill-bg: #111111;
  --pill-text: #ffffff;
  --success: #111111;
  --danger: #555555;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #111111;
    --surface: #171717;
    --surface-2: #1d1d1d;
    --text: #f2f2f2;
    --muted: #9a9a9a;
    --border: #2f2f2f;
    --accent: #ffffff;
    --accent-soft: rgba(255, 255, 255, 0.06);
    --shadow: 0 18px 50px rgba(0, 0, 0, 0.35);
    --shadow-sm: 0 8px 24px rgba(0, 0, 0, 0.28);
    --grid: rgba(255, 255, 255, 0.08);
    --canvas-bg: #121212;
    --track: #3a3a3a;
    --thumb: #ffffff;
    --pill-bg: #ffffff;
    --pill-text: #111111;
    --success: #f2f2f2;
    --danger: #8a8a8a;
  }
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--text);
  font-family: "Inter", system-ui, -apple-system, sans-serif;
  -webkit-font-smoothing: antialiased;
  overflow: hidden;
}

.shell {
  padding: 1rem;
}

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
}

.card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  padding: 0.9rem 1rem;
  border-bottom: 1px solid var(--border);
  background: linear-gradient(180deg, var(--surface-2), var(--surface));
}

.card-title {
  margin: 0;
  font-size: 0.82rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.card-subtitle {
  margin: 0.2rem 0 0;
  font-size: 0.78rem;
  color: var(--muted);
  font-weight: 400;
  text-transform: none;
  letter-spacing: 0;
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.35rem 0.7rem;
  border-radius: 999px;
  background: var(--pill-bg);
  color: var(--pill-text);
  font-size: 0.78rem;
  font-weight: 600;
  white-space: nowrap;
}

.badge-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: currentColor;
  opacity: 0.65;
}

.canvas-wrap {
  position: relative;
  padding: 0.75rem 0.75rem 0.5rem;
}

canvas {
  display: block;
  width: 100%;
  height: auto;
  border-radius: var(--radius-sm);
  background: var(--canvas-bg);
  border: 1px solid var(--border);
}

.controls {
  padding: 0.85rem 1rem 1rem;
  border-top: 1px solid var(--border);
  background: var(--surface-2);
}

.control-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.85rem;
}

@media (max-width: 640px) {
  .control-row {
    grid-template-columns: 1fr;
  }
}

.control {
  display: grid;
  gap: 0.45rem;
}

.control-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.5rem;
}

.control-label {
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.03em;
  text-transform: uppercase;
  color: var(--muted);
}

.control-value {
  font-size: 0.82rem;
  font-weight: 700;
  font-variant-numeric: tabular-nums;
}

input[type="range"] {
  -webkit-appearance: none;
  appearance: none;
  width: 100%;
  height: 6px;
  border-radius: 999px;
  background: var(--track);
  outline: none;
}

input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: var(--thumb);
  border: 2px solid var(--surface);
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.18);
  cursor: pointer;
  transition: transform 0.15s ease;
}

input[type="range"]::-webkit-slider-thumb:hover {
  transform: scale(1.08);
}

input[type="range"]::-moz-range-thumb {
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: var(--thumb);
  border: 2px solid var(--surface);
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.18);
  cursor: pointer;
}

.hint {
  margin: 0.75rem 0 0;
  font-size: 0.82rem;
  line-height: 1.5;
  color: var(--muted);
}

.grid-2 {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 0.85rem;
}

@media (max-width: 820px) {
  .grid-2 {
    grid-template-columns: 1fr;
  }
}

.toolbar {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  align-items: center;
  margin-top: 0.85rem;
}

.btn {
  appearance: none;
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text);
  padding: 0.55rem 0.9rem;
  border-radius: 999px;
  font-size: 0.82rem;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.15s ease, color 0.15s ease, border-color 0.15s ease, transform 0.15s ease;
}

.btn:hover {
  transform: translateY(-1px);
}

.btn-primary {
  background: var(--pill-bg);
  color: var(--pill-text);
  border-color: var(--pill-bg);
}

.btn-ghost.is-active,
.btn:hover {
  background: var(--accent-soft);
}

.chip-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
}

.chip {
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--muted);
  padding: 0.4rem 0.7rem;
  border-radius: 999px;
  font-size: 0.76rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.15s ease;
}

.chip.is-active {
  background: var(--pill-bg);
  color: var(--pill-text);
  border-color: var(--pill-bg);
}

.status-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  margin-top: 0.85rem;
  padding: 0.75rem 0.9rem;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  background: var(--surface);
}

.status-text {
  font-size: 0.82rem;
  line-height: 1.45;
  color: var(--muted);
}

.status-text strong {
  color: var(--text);
}

.metric-row {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
}

.metric {
  min-width: 88px;
  padding: 0.55rem 0.7rem;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  background: var(--surface-2);
}

.metric-label {
  display: block;
  font-size: 0.68rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--muted);
  margin-bottom: 0.2rem;
}

.metric-value {
  font-size: 0.95rem;
  font-weight: 700;
  font-variant-numeric: tabular-nums;
}