:root {
  color-scheme: dark;
  --bg: #09111c;
  --panel: #0f1b2b;
  --panel-2: #13233a;
  --line: #233856;
  --text: #d9e7ff;
  --muted: #8fa7cc;
  --accent: #7ed0ff;
  --accent-2: #ffb86b;
  --good: #2d5f40;
  --good-border: #4e8b63;
  --warn: #5d4720;
  --warn-border: #ad8745;
  --bad: #5d2c31;
  --bad-border: #bf6972;
}

* {
  box-sizing: border-box;
}

html, body {
  margin: 0;
  padding: 0;
  min-height: 100%;
  background:
    radial-gradient(circle at top, rgba(47, 95, 163, 0.25), transparent 35%),
    linear-gradient(180deg, #07101a 0%, var(--bg) 100%);
  color: var(--text);
  font-family: "Segoe UI", -apple-system, BlinkMacSystemFont, sans-serif;
}

body {
  min-height: 100vh;
  min-height: 100dvh;
}

#app {
  min-height: 100vh;
  min-height: 100dvh;
  display: flex;
  flex-direction: column;
}

#controls {
  padding: max(14px, env(safe-area-inset-top)) 14px 12px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.hero {
  display: grid;
  gap: 10px;
}

.hero h1 {
  margin: 0 0 4px;
  font-size: 1.35rem;
  letter-spacing: 0.02em;
}

.hero p {
  margin: 0;
  color: var(--muted);
  line-height: 1.4;
  font-size: 0.95rem;
}

.status {
  border-radius: 12px;
  padding: 10px 12px;
  border: 1px solid var(--line);
  font-size: 0.92rem;
  line-height: 1.35;
}

.status.info {
  background: rgba(19, 35, 58, 0.9);
  border-color: #31527a;
}

.status.good {
  background: var(--good);
  border-color: var(--good-border);
}

.status.warn {
  background: var(--warn);
  border-color: var(--warn-border);
}

.status.bad {
  background: var(--bad);
  border-color: var(--bad-border);
}

.control-grid {
  display: grid;
  gap: 10px;
}

.field {
  display: grid;
  gap: 6px;
  background: rgba(15, 27, 43, 0.94);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 10px 12px;
}

.field span {
  color: var(--muted);
  font-size: 0.82rem;
}

select,
button,
input[type="range"] {
  width: 100%;
}

select,
button {
  border: 1px solid #35527a;
  border-radius: 10px;
  background: #12233a;
  color: var(--text);
  min-height: 42px;
  padding: 10px 12px;
  font-size: 0.98rem;
}

button {
  background: linear-gradient(180deg, #173353, #12233a);
  font-weight: 600;
}

button:disabled {
  opacity: 0.45;
}

.field-buttons {
  gap: 8px;
}

.button-row {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 8px;
}

.range-row {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 10px;
  align-items: center;
}

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

output {
  min-width: 44px;
  text-align: right;
  font-family: ui-monospace, SFMono-Regular, Consolas, monospace;
  color: var(--accent);
}

#facts {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 8px;
  font-family: ui-monospace, SFMono-Regular, Consolas, monospace;
  font-size: 0.8rem;
  color: var(--muted);
}

#facts span {
  background: rgba(15, 27, 43, 0.82);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 8px 10px;
}

#collapsed-tray {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

#collapsed-tray:empty {
  display: none;
}

.tray-btn {
  width: auto;
  min-height: 34px;
  padding: 6px 10px;
  border-radius: 999px;
  font-size: 0.8rem;
}

#visualizers {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: 0 10px max(10px, env(safe-area-inset-bottom));
}

.viz-panel {
  min-height: 44vh;
  background: rgba(12, 23, 38, 0.94);
  border: 1px solid var(--line);
  border-radius: 18px;
  overflow: hidden;
  display: flex;
  flex-direction: column;
}

.viz-header {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 12px;
  border-bottom: 1px solid rgba(35, 56, 86, 0.75);
  background: linear-gradient(180deg, rgba(18, 35, 58, 0.95), rgba(12, 23, 38, 0.95));
}

.viz-drag-handle {
  display: none;
}

.viz-toggle {
  margin: 0;
  font-size: 0.86rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent);
  cursor: pointer;
}

.viz-prefix {
  display: inline-block;
  width: 18px;
}

.viz-controls {
  margin-left: auto;
  display: flex;
  align-items: center;
  gap: 6px;
  color: var(--muted);
  font-size: 0.78rem;
}

.viz-controls select {
  width: auto;
  min-height: 32px;
  font-size: 0.82rem;
  padding: 6px 8px;
}

.viz-body {
  flex: 1;
  min-height: 0;
}

.viz-body canvas {
  display: block;
  width: 100%;
  height: 100%;
}

.viz-panel.collapsed {
  min-height: auto;
}

.viz-panel.collapsed .viz-body {
  display: none;
}

@media (min-width: 760px) {
  .hero {
    grid-template-columns: 1.4fr 1fr;
    align-items: start;
  }

  .control-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  #facts {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  #visualizers {
    padding-inline: 14px;
  }

  .viz-panel {
    min-height: 36vh;
  }
}