:root {
  color-scheme: dark;
  font-family: "Inter", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI",
    sans-serif;
  line-height: 1.5;
  font-weight: 400;
  --panel-width: min(420px, 32vw);
  --panel-background: rgba(15, 18, 24, 0.88);
  --panel-border: rgba(255, 255, 255, 0.12);
  --accent: #ffd166;
  --text-muted: rgba(235, 235, 245, 0.6);
  --text-strong: rgba(255, 255, 255, 0.92);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: radial-gradient(circle at 20% 20%, #1a1f2b, #050609 70%);
  color: var(--text-strong);
  min-height: 100vh;
  display: flex;
}

#app {
  flex: 1;
  display: grid;
  grid-template-columns: 1fr var(--panel-width);
  height: 100vh;
}

#canvas-container {
  position: relative;
  background: transparent;
}

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

#ui-panel {
  backdrop-filter: blur(18px) saturate(140%);
  background: var(--panel-background);
  border-left: 1px solid var(--panel-border);
  padding: 1.5rem;
  overflow-y: auto;
}

#ui-panel header h1 {
  margin: 0 0 0.75rem;
  font-size: 1.6rem;
}

#ui-panel header p,
#ui-panel footer p {
  margin: 0 0 1rem;
  color: var(--text-muted);
}

.controls {
  margin-bottom: 1.5rem;
}

.controls h2 {
  font-size: 1rem;
  margin: 1rem 0 0.5rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--accent);
}

.control-row {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 0.75rem;
  flex-wrap: wrap;
}

.control-row label {
  font-size: 0.85rem;
  color: var(--text-muted);
}

.range-label {
  min-width: 11ch;
}

button,
select,
input[type="range"],
input[type="checkbox"] {
  font: inherit;
}

button {
  background: linear-gradient(135deg, #f79c42, #ffd166);
  border: none;
  padding: 0.4rem 0.9rem;
  border-radius: 999px;
  cursor: pointer;
  font-weight: 600;
  color: #211000;
  transition: transform 150ms ease, box-shadow 150ms ease;
}

button:hover {
  transform: translateY(-1px);
  box-shadow: 0 8px 16px rgba(0, 0, 0, 0.35);
}

input[type="range"] {
  width: clamp(140px, 18vw, 220px);
}

select {
  min-width: clamp(160px, 20vw, 240px);
  padding: 0.35rem 0.75rem;
  border-radius: 999px;
  border: 1px solid var(--panel-border);
  background: rgba(19, 23, 31, 0.92);
  color: inherit;
}

#gear-details {
  border: 1px solid var(--panel-border);
  border-radius: 18px;
  padding: 1rem;
  background: rgba(12, 16, 24, 0.7);
}

#gear-details h2 {
  margin-top: 0;
  font-size: 0.95rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--accent);
}

.details-grid {
  display: grid;
  grid-template-columns: max-content 1fr;
  gap: 0.35rem 0.75rem;
  font-size: 0.9rem;
}

.details-label {
  color: var(--text-muted);
}

.details-value {
  font-weight: 500;
}

footer {
  font-size: 0.78rem;
  color: var(--text-muted);
  margin-top: 2rem;
}

#tooltip {
  position: fixed;
  padding: 0.3rem 0.6rem;
  border-radius: 6px;
  background: rgba(0, 0, 0, 0.82);
  color: #fff;
  font-size: 0.8rem;
  pointer-events: none;
  transform: translate(-50%, -120%);
  white-space: nowrap;
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.45);
  z-index: 100;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  border: 0;
}

@media (max-width: 1024px) {
  #app {
    grid-template-columns: 1fr;
  }

  #ui-panel {
    position: absolute;
    inset: auto 0 0 0;
    height: clamp(320px, 40vh, 420px);
    display: flex;
    flex-direction: column;
    background: rgba(10, 12, 18, 0.96);
  }

  #canvas-container {
    height: 100vh;
  }
}