/* ==========================================================================
   Geometric Methods — Interactive Demo Styles
   ========================================================================== */

.demo-container {
  margin: 32px 0;
  background: linear-gradient(135deg, #0a1929, #0f2438);
  border: 1px solid rgba(102,194,165,0.25);
  border-radius: 12px;
  overflow: hidden;
  box-shadow: 0 4px 24px rgba(0,0,0,0.3);
}

.demo-header {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 14px 20px;
  background: rgba(27,158,119,0.08);
  border-bottom: 1px solid rgba(102,194,165,0.15);
}

.demo-header .demo-icon {
  font-size: 1.1rem;
}

.demo-header h4 {
  font-family: 'Crimson Pro', serif;
  font-size: 1rem;
  font-weight: 600;
  color: #66c2a5;
  margin: 0;
}

.demo-header .demo-badge {
  margin-left: auto;
  font-size: 0.7rem;
  font-family: 'JetBrains Mono', monospace;
  color: #5c7a94;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  background: rgba(102,194,165,0.1);
  padding: 3px 8px;
  border-radius: 4px;
}

.demo-body {
  padding: 20px;
  display: flex;
  gap: 20px;
  flex-wrap: wrap;
}

.demo-canvas-wrap {
  flex: 1;
  min-width: 300px;
  position: relative;
}

.demo-canvas-wrap svg, .demo-canvas-wrap canvas {
  width: 100%;
  height: auto;
  display: block;
}

.demo-controls {
  min-width: 200px;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.demo-control-group label {
  display: block;
  font-size: 0.78rem;
  color: #8fa4b8;
  margin-bottom: 4px;
  font-family: 'JetBrains Mono', monospace;
}

.demo-control-group input[type="range"] {
  width: 100%;
  accent-color: #1b9e77;
  height: 4px;
  cursor: pointer;
}

.demo-control-group .value-display {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.78rem;
  color: #66c2a5;
  float: right;
}

.demo-readout {
  background: rgba(10,25,41,0.8);
  border: 1px solid rgba(102,194,165,0.15);
  border-radius: 8px;
  padding: 12px;
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.78rem;
  line-height: 1.6;
  color: #8fa4b8;
}

.demo-readout .highlight {
  color: #66c2a5;
  font-weight: 500;
}

.demo-readout .warn {
  color: #d95f02;
}

.demo-btn-group {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.demo-btn {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.75rem;
  padding: 6px 10px;
  background: rgba(27,158,119,0.12);
  color: #66c2a5;
  border: 1px solid rgba(102,194,165,0.3);
  border-radius: 6px;
  cursor: pointer;
  transition: all 0.15s;
}

.demo-btn:hover {
  background: rgba(27,158,119,0.25);
  border-color: #1b9e77;
}

.demo-btn.active {
  background: rgba(27,158,119,0.35);
  border-color: #1b9e77;
  color: #e8ecf0;
}

.demo-footer {
  padding: 10px 20px;
  border-top: 1px solid rgba(102,194,165,0.1);
  font-size: 0.75rem;
  color: #5c7a94;
  font-style: italic;
}

/* Grid for D4 demo */
.demo-grid {
  display: inline-grid;
  gap: 2px;
  background: rgba(102,194,165,0.1);
  border-radius: 4px;
  padding: 2px;
}

.demo-grid-cell {
  width: 40px;
  height: 40px;
  border-radius: 3px;
  transition: background-color 0.3s ease;
}

/* Responsive */
@media (max-width: 700px) {
  .demo-body {
    flex-direction: column;
  }
  .demo-controls {
    min-width: unset;
  }
  .demo-grid-cell {
    width: 32px;
    height: 32px;
  }
}