:root {
  font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
}

html,
body {
  margin: 0;
  padding: 0;
  width: 100%;
  height: 100%;
  background: transparent;
  color: #e2e8f0;
  overflow: hidden;
}

#root {
  width: 100%;
  height: 100%;
  background: transparent;
}

.app {
  width: 100vw;
  height: 100vh;
  position: relative;
  user-select: none;
}

.canvas-host {
  position: absolute;
  inset: 0;
}

.debug-panel {
  position: absolute;
  top: 8px;
  left: 8px;
  min-width: 220px;
  padding: 10px;
  border: 1px solid rgba(255, 255, 255, 0.2);
  background: rgba(15, 23, 42, 0.55);
  backdrop-filter: blur(4px);
  border-radius: 8px;
}

dl {
  display: grid;
  grid-template-columns: 120px 1fr;
  gap: 8px 12px;
}

dt {
  font-weight: 700;
  text-transform: uppercase;
  font-size: 12px;
  opacity: 0.8;
}

dd {
  margin: 0;
}

.error {
  color: #fecaca;
}

.hint {
  margin: 0 0 8px;
  font-size: 12px;
  opacity: 0.8;
}

.error-banner {
  position: absolute;
  top: 8px;
  left: 8px;
  max-width: 320px;
  margin: 0;
  padding: 8px 10px;
  border: 1px solid rgba(255, 255, 255, 0.2);
  background: rgba(127, 29, 29, 0.75);
  border-radius: 8px;
  color: #fee2e2;
  font-size: 12px;
}

.settings-root {
  min-height: 100vh;
  display: flex;
  align-items: stretch;
  justify-content: center;
  background: linear-gradient(180deg, #f1f5f9 0%, #dbe4ee 100%);
  color: #0f172a;
  user-select: none;
}

.settings-card {
  width: 100%;
  max-width: 480px;
  margin: 0;
  padding: 20px;
  display: grid;
  gap: 14px;
  align-content: start;
}

.settings-card h1 {
  margin: 0;
  font-size: 24px;
}

.settings-subtitle {
  margin: 0;
  color: #334155;
  font-size: 13px;
}

.settings-error {
  margin: 0;
  color: #991b1b;
  background: #fee2e2;
  border: 1px solid #fca5a5;
  padding: 8px 10px;
  border-radius: 8px;
  font-size: 13px;
}

.field {
  display: grid;
  gap: 8px;
}

.field span {
  font-size: 13px;
  font-weight: 600;
  color: #1e293b;
}

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

.field select {
  border: 1px solid #94a3b8;
  border-radius: 8px;
  padding: 8px 10px;
  background: #ffffff;
  color: #0f172a;
}

.toggle {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 14px;
  color: #1e293b;
}