:root {
  --bg-slate-950: #020617;
  --bg-slate-900: #0f172a;
  --bg-slate-800: #1e293b;
  --border-slate: rgba(51, 65, 85, 0.6);
  --accent-amber: #fbbf24;
}

body {
  background-color: var(--bg-slate-950);
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
}

/* Glassmorphism Cards */
.glass-card {
  background: rgba(15, 23, 42, 0.75);
  backdrop-filter: blur(12px);
  border: 1px solid rgba(51, 65, 85, 0.5);
  box-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.37);
}

.glass-card:hover {
  border-color: rgba(251, 191, 36, 0.2);
}

/* Tab & Mode Active States */
.event-tab-btn.active {
  background-color: rgba(251, 191, 36, 0.15);
  color: #fbbf24;
  border: 1px solid rgba(251, 191, 36, 0.3);
}

.mode-btn.active {
  background-color: rgba(251, 191, 36, 0.15);
  color: #fbbf24;
  border: 1px solid rgba(251, 191, 36, 0.3);
}

/* Form Controls & Inputs */
.custom-input, 
.custom-select {
  transition: all 0.2s ease-in-out;
}

.custom-input:focus, 
.custom-select:focus {
  box-shadow: 0 0 12px rgba(251, 191, 36, 0.25);
}

/* Range Sliders */
.ratio-slider {
  -webkit-appearance: none;
  appearance: none;
  height: 6px;
  border-radius: 9999px;
  background: #1e293b;
  outline: none;
}

.ratio-slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  cursor: pointer;
  border: 2px solid #0f172a;
  transition: transform 0.1s ease;
}

.ratio-slider::-webkit-slider-thumb:hover {
  transform: scale(1.2);
}

.slider-blue::-webkit-slider-thumb { background: #60a5fa; }
.slider-red::-webkit-slider-thumb { background: #f87171; }
.slider-emerald::-webkit-slider-thumb { background: #34d399; }

/* Custom Checkbox */
.checkbox-container input[type="checkbox"] {
  accent-color: #fbbf24;
  width: 14px;
  height: 14px;
  border-radius: 4px;
}