/* Clifford Torus Flow - Visualization Styles */

/* Reset and base */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

:root {
  /* Grade colors */
  --grade-0: #ff3333;   /* Scalar - Red */
  --grade-1: #ff9911;   /* Vector - Orange */
  --grade-2: #22ff55;   /* Bivector - Green (throat!) */
  --grade-3: #22ccff;   /* Trivector - Cyan */
  --grade-4: #dd22ff;   /* Pseudoscalar - Magenta */
  
  /* UI colors */
  --bg-dark: #0a0a0f;
  --panel-bg: rgba(10, 10, 15, 0.85);
  --text-primary: #e0e0e0;
  --text-secondary: #888;
  --border: rgba(255, 255, 255, 0.1);
  --accent: var(--grade-2);
  
  /* Golden ratio spacing */
  --phi: 1.618;
  --spacing-base: 8px;
  --spacing-1: calc(var(--spacing-base) * 1);
  --spacing-2: calc(var(--spacing-base) * var(--phi));
  --spacing-3: calc(var(--spacing-base) * var(--phi) * var(--phi));
}

@font-face {
  font-family: 'JetBrains Mono';
  src: local('JetBrains Mono'), local('Consolas'), local('monospace');
}

body {
  background: var(--bg-dark);
  color: var(--text-primary);
  font-family: 'JetBrains Mono', 'SF Mono', Consolas, monospace;
  font-size: 12px;
  overflow: hidden;
  height: 100vh;
  width: 100vw;
}

/* Canvas */
#canvas {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  cursor: grab;
}

#canvas:active {
  cursor: grabbing;
}

/* Header */
#header {
  position: fixed;
  top: var(--spacing-2);
  left: var(--spacing-2);
  z-index: 100;
  
  background: var(--panel-bg);
  backdrop-filter: blur(10px);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: var(--spacing-2);
  pointer-events: none; /* Let clicks pass through */
}

#header h1 {
  font-size: 16px;
  font-weight: 600;
  letter-spacing: 0.05em;
  background: linear-gradient(135deg, var(--grade-2), var(--grade-4));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

#header .subtitle {
  font-size: 10px;
  color: var(--text-secondary);
  margin-top: 2px;
  letter-spacing: 0.02em;
}

/* Info panel */
#info {
  position: fixed;
  top: var(--spacing-2);
  right: var(--spacing-2);
  z-index: 100;
  
  background: var(--panel-bg);
  backdrop-filter: blur(10px);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: var(--spacing-2);
  min-width: 200px;
  pointer-events: none;
}

#info .loading {
  color: var(--text-secondary);
  font-style: italic;
}

.info-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 2px 0;
  position: relative;
}

.info-row.separator {
  margin-top: var(--spacing-1);
  padding-top: var(--spacing-1);
  border-top: 1px solid var(--border);
}

.info-row .label {
  color: var(--text-secondary);
  font-size: 10px;
}

.info-row .value {
  font-weight: 500;
  font-size: 11px;
}

/* Grade bars */
.info-row.grade {
  padding-right: 40px;
}

.info-row.grade .bar {
  position: absolute;
  right: 0;
  top: 50%;
  transform: translateY(-50%);
  height: 4px;
  border-radius: 2px;
  max-width: 35px;
  opacity: 0.8;
}

.info-row.grade-0 .value { color: var(--grade-0); }
.info-row.grade-0 .bar { background: var(--grade-0); }

.info-row.grade-1 .value { color: var(--grade-1); }
.info-row.grade-1 .bar { background: var(--grade-1); }

.info-row.grade-2 .value { color: var(--grade-2); }
.info-row.grade-2 .bar { background: var(--grade-2); }

.info-row.grade-3 .value { color: var(--grade-3); }
.info-row.grade-3 .bar { background: var(--grade-3); }

.info-row.grade-4 .value { color: var(--grade-4); }
.info-row.grade-4 .bar { background: var(--grade-4); }

/* Controls Panel */
#controls-panel {
  position: fixed;
  bottom: 80px; /* Above footer */
  right: var(--spacing-2);
  z-index: 100;
  
  background: var(--panel-bg);
  backdrop-filter: blur(10px);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: var(--spacing-2);
  width: 220px;
}

.panel-header {
  font-size: 11px;
  font-weight: 600;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: var(--spacing-2);
  padding-bottom: 4px;
  border-bottom: 1px solid var(--border);
}

.control-group {
  margin-bottom: var(--spacing-2);
}

.control-group label {
  display: flex;
  justify-content: space-between;
  font-size: 11px;
  margin-bottom: 4px;
}

.control-group .value {
  color: var(--accent);
  font-family: monospace;
}

.control-group input[type="range"] {
  width: 100%;
  height: 4px;
  background: rgba(255, 255, 255, 0.1);
  border-radius: 2px;
  -webkit-appearance: none;
  cursor: pointer;
}

.control-group input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 12px;
  height: 12px;
  background: var(--text-primary);
  border-radius: 50%;
  border: 2px solid var(--bg-dark);
  cursor: pointer;
  transition: transform 0.1s;
}

.control-group input[type="range"]::-webkit-slider-thumb:hover {
  transform: scale(1.2);
  background: var(--accent);
}

.control-group .desc {
  font-size: 9px;
  color: var(--text-secondary);
  margin-top: 2px;
  font-style: italic;
}

.control-group.checkbox label {
  justify-content: flex-start;
  gap: 10px;
  cursor: pointer;
}

.control-group.checkbox input[type="checkbox"] {
  width: auto;
  height: auto;
  cursor: pointer;
}

.action-btn {
  width: 100%;
  padding: 8px;
  background: rgba(255, 50, 50, 0.2);
  border: 1px solid rgba(255, 50, 50, 0.5);
  color: #ffcccc;
  border-radius: 4px;
  cursor: pointer;
  font-family: inherit;
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  transition: all 0.2s;
}

.action-btn:hover {
  background: rgba(255, 50, 50, 0.4);
  border-color: #ff5555;
  color: white;
}

.action-btn:active {
  transform: scale(0.98);
}

/* Footer Controls */
#footer-controls {
  position: fixed;
  bottom: var(--spacing-2);
  left: 50%;
  transform: translateX(-50%);
  z-index: 100;
  
  display: flex;
  gap: var(--spacing-2);
  
  background: var(--panel-bg);
  backdrop-filter: blur(10px);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: var(--spacing-1) var(--spacing-2);
}

.control {
  display: flex;
  align-items: center;
  gap: 6px;
}

.control kbd {
  display: inline-block;
  padding: 2px 6px;
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid var(--border);
  border-radius: 3px;
  font-family: inherit;
  font-size: 10px;
  color: var(--text-primary);
}

.control span {
  font-size: 10px;
  color: var(--text-secondary);
}

/* Error display */
.error {
  position: fixed;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  z-index: 1000;
  
  background: rgba(255, 50, 50, 0.9);
  border-radius: 8px;
  padding: var(--spacing-3);
  text-align: center;
  max-width: 400px;
}

.error h2 {
  margin-bottom: var(--spacing-1);
}

.error p {
  margin: var(--spacing-1) 0;
}

/* Responsive */
@media (max-width: 600px) {
  #header,
  #info {
    max-width: calc(100vw - var(--spacing-3));
  }
  
  #controls-panel {
    top: auto;
    bottom: 60px;
    right: 50%;
    transform: translateX(50%);
    width: calc(100vw - var(--spacing-3));
    max-width: 350px;
  }
  
  #footer-controls {
    flex-wrap: wrap;
    justify-content: center;
    max-width: calc(100vw - var(--spacing-3));
  }
}

/* Animations */
@keyframes pulse {
  0%, 100% { opacity: 0.8; }
  50% { opacity: 1; }
}

.info-row.grade .bar {
  animation: pulse 2s ease-in-out infinite;
}