:root {
  color-scheme: dark;
  font-family: "Inter", "SF Pro Text", system-ui, sans-serif;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  padding: 0;
  height: 100%;
  background: #05070d;
  overflow: hidden;
}

.app {
  position: relative;
  width: 100vw;
  height: 100vh;
  overflow: hidden;
}

#wind-canvas {
  width: 100%;
  height: 100%;
  display: block;
  touch-action: none;
  background: radial-gradient(circle at 20% 20%, #101624, #05070d 70%);
}

.ui {
  position: absolute;
  top: 16px;
  right: 16px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  z-index: 10;
  min-width: 180px;
}

.ui button,
.ui .slider {
  padding: 8px 12px;
  border-radius: 999px;
  border: 1px solid rgba(255, 255, 255, 0.2);
  background: rgba(10, 14, 24, 0.75);
  color: #f2f5ff;
  font-size: 0.85rem;
  cursor: pointer;
  backdrop-filter: blur(6px);
}

.ui .select,
.ui .more-panel summary {
  padding: 8px 12px;
  border-radius: 999px;
  border: 1px solid rgba(255, 255, 255, 0.2);
  background: rgba(10, 14, 24, 0.75);
  color: #f2f5ff;
  font-size: 0.85rem;
  backdrop-filter: blur(6px);
}

.ui .more-panel {
  margin: 0;
}

.ui .more-panel summary {
  list-style: none;
  cursor: pointer;
  text-align: left;
}

.ui .more-panel summary::-webkit-details-marker {
  display: none;
}

.ui .more-panel__body {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-top: 6px;
}

.ui .pro-panel {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding-top: 6px;
  border-top: 1px solid rgba(255, 255, 255, 0.12);
}

.ui .pro-panel[hidden] {
  display: none;
}

.ui .pro-panel__header {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  opacity: 0.7;
  padding: 0 4px;
}

.ui .force-fields-list {
  display: grid;
  gap: 6px;
  padding: 6px 0;
}

.ui .force-field-item {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 8px;
  align-items: center;
  padding: 6px 10px;
  border-radius: 14px;
  background: rgba(18, 24, 38, 0.65);
  border: 1px solid rgba(255, 255, 255, 0.12);
  font-size: 0.8rem;
}

.ui .force-field-item button {
  padding: 4px 10px;
  border-radius: 999px;
  border: 1px solid rgba(255, 255, 255, 0.2);
  background: rgba(8, 12, 20, 0.6);
  color: inherit;
  font-size: 0.75rem;
  cursor: pointer;
}

.ui .force-fields-empty {
  font-size: 0.75rem;
  opacity: 0.7;
  padding: 4px 6px;
}

.ui .more-panel__body button {
  text-align: left;
}

.ui .select {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 6px 12px;
  align-items: center;
  cursor: default;
}

.ui .select span {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  opacity: 0.75;
}

.ui .select select {
  background: transparent;
  border: none;
  color: inherit;
  font-size: 0.85rem;
  cursor: pointer;
  text-align: right;
  appearance: none;
}

.ui .select select:focus-visible,
.ui .more-panel summary:focus-visible {
  outline: 2px solid #8ab4ff;
  outline-offset: 2px;
}

.ui .slider {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 6px 10px;
  align-items: center;
  cursor: default;
  padding: 10px 12px;
}

.ui .slider span:first-child {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  opacity: 0.75;
}

.ui .slider input[type="range"] {
  grid-column: 1 / span 2;
  width: 100%;
}

.ui .slider span:last-child {
  font-size: 0.75rem;
  opacity: 0.7;
  justify-self: end;
}

.ui button:focus-visible {
  outline: 2px solid #8ab4ff;
  outline-offset: 2px;
}

.hint {
  position: absolute;
  bottom: 16px;
  left: 50%;
  transform: translateX(-50%);
  padding: 6px 12px;
  border-radius: 999px;
  background: rgba(10, 14, 24, 0.7);
  color: rgba(242, 245, 255, 0.8);
  font-size: 0.8rem;
  letter-spacing: 0.01em;
}

.fps-meter {
  position: absolute;
  top: 16px;
  left: 16px;
  padding: 6px 10px;
  border-radius: 999px;
  background: rgba(10, 14, 24, 0.75);
  color: rgba(242, 245, 255, 0.85);
  font-size: 0.75rem;
  letter-spacing: 0.02em;
  display: none;
  z-index: 10;
}