:root {
  color-scheme: dark;
  --bg: #10140f;
  --ink: #f4f0df;
  --muted: #b7bdab;
  --panel: rgba(19, 24, 19, 0.88);
  --line: rgba(244, 240, 223, 0.16);
  --accent: #f0c241;
  --blue: #53a5d8;
  --green: #688f4e;
}

* {
  box-sizing: border-box;
}

html,
body {
  width: 100%;
  height: 100%;
}

body {
  margin: 0;
  overflow: hidden;
  background: var(--bg);
  color: var(--ink);
  font-family: ui-serif, Georgia, "Times New Roman", serif;
}

.shell {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 360px;
  width: 100vw;
  height: 100vh;
}

.viewport {
  position: relative;
  min-width: 0;
  background:
    linear-gradient(90deg, rgba(255, 255, 255, 0.025) 1px, transparent 1px),
    linear-gradient(rgba(255, 255, 255, 0.025) 1px, transparent 1px),
    radial-gradient(circle at 28% 18%, rgba(240, 194, 65, 0.12), transparent 30%),
    #0d130d;
  background-size: 26px 26px, 26px 26px, auto, auto;
}

#court-canvas,
#labels {
  position: absolute;
  inset: 0;
}

#court-canvas {
  display: block;
  width: 100%;
  height: 100%;
}

#labels {
  pointer-events: none;
}

.label {
  max-width: 180px;
  padding: 0;
  border: 0;
  border-radius: 0;
  background: transparent;
  color: var(--ink);
  font: 700 11px/1.15 ui-sans-serif, system-ui, sans-serif;
  box-shadow: none;
  text-shadow: 0 1px 2px rgba(0, 0, 0, 0.85), 0 0 6px rgba(0, 0, 0, 0.7);
  transform: translate(-50%, -100%);
  white-space: normal;
}

.label.dim {
  color: #ffe59b;
}

.label.danger {
  color: #ffb39f;
}

.label.small {
  max-width: 150px;
  padding: 0;
  border-radius: 0;
  background: transparent;
  font-size: 10px;
  line-height: 1.1;
  box-shadow: none;
}

.panel {
  display: flex;
  flex-direction: column;
  gap: 22px;
  padding: 28px;
  border-left: 1px solid var(--line);
  background: var(--panel);
  backdrop-filter: blur(12px);
  overflow: auto;
}

.eyebrow {
  margin: 0 0 8px;
  color: var(--accent);
  font: 800 12px/1 ui-sans-serif, system-ui, sans-serif;
  letter-spacing: 0;
  text-transform: uppercase;
}

h1 {
  margin: 0;
  font-size: 34px;
  line-height: 1.03;
  letter-spacing: 0;
}

.control-group {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
}

.mode {
  min-height: 42px;
  border: 1px solid rgba(244, 240, 223, 0.24);
  border-radius: 6px;
  background: rgba(255, 255, 255, 0.04);
  color: var(--ink);
  cursor: pointer;
  font: 800 14px/1 ui-sans-serif, system-ui, sans-serif;
}

.mode.active {
  border-color: rgba(240, 194, 65, 0.92);
  background: rgba(240, 194, 65, 0.18);
  color: #ffe49a;
}

.mode.full {
  grid-column: 1 / -1;
}

.toggle {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--muted);
  font: 700 14px/1.2 ui-sans-serif, system-ui, sans-serif;
}

.toggle input {
  width: 18px;
  height: 18px;
  accent-color: var(--accent);
}

.sliders {
  display: grid;
  gap: 14px;
  padding: 14px;
  border: 1px solid rgba(244, 240, 223, 0.14);
  border-radius: 6px;
  background: rgba(0, 0, 0, 0.18);
}

.sliders.compact {
  gap: 10px;
  padding: 12px;
}

.range-row {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 8px 12px;
  align-items: center;
  color: var(--muted);
  font: 800 13px/1.15 ui-sans-serif, system-ui, sans-serif;
}

.range-row strong {
  color: var(--ink);
  font-size: 13px;
}

.range-row input {
  grid-column: 1 / -1;
  width: 100%;
  accent-color: var(--accent);
}

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

.readout div {
  padding: 12px;
  border: 1px solid rgba(244, 240, 223, 0.14);
  border-radius: 6px;
  background: rgba(255, 255, 255, 0.035);
}

.readout div.warning {
  border-color: rgba(255, 107, 74, 0.72);
  background: rgba(255, 107, 74, 0.09);
}

.readout span,
.formula code {
  display: block;
  color: var(--muted);
  font: 700 12px/1.25 ui-sans-serif, system-ui, sans-serif;
}

.readout strong {
  display: block;
  margin-top: 4px;
  font: 900 15px/1.25 ui-sans-serif, system-ui, sans-serif;
}

.formula {
  display: grid;
  gap: 8px;
  margin-top: auto;
}

.formula code {
  padding: 10px;
  border-left: 3px solid var(--accent);
  background: rgba(0, 0, 0, 0.24);
  color: #f7ddb0;
}

@media (max-width: 820px) {
  body {
    overflow: auto;
  }

  .shell {
    grid-template-columns: 1fr;
    grid-template-rows: minmax(520px, 65vh) auto;
    height: auto;
    min-height: 100vh;
  }

  .panel {
    border-left: 0;
    border-top: 1px solid var(--line);
  }
}