/* Reset y variables */
:root {
  --primary: #6200ea;
  --primary-dark: #3700b3;
  --secondary: #03dac6;
  --error: #cf6679;
  --background: #121212;
  --surface: #1e1e1e;
  --on-surface: #ffffff;
  --on-primary: #ffffff;
  --border-radius: 12px;
  --spacing: 16px;
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
  background: var(--background);
  color: var(--on-surface);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

.container {
  max-width: 600px;
  margin: 0 auto;
  padding: var(--spacing);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* Header */
header {
  text-align: center;
  margin-bottom: calc(var(--spacing) * 2);
  padding: var(--spacing);
}

h1 {
  font-size: 2rem;
  margin-bottom: 0.5rem;
  color: var(--secondary);
}

.subtitle {
  color: #999;
  font-size: 0.9rem;
}

/* Status */
.status {
  background: var(--surface);
  padding: var(--spacing);
  border-radius: var(--border-radius);
  text-align: center;
  margin-bottom: var(--spacing);
  border-left: 4px solid var(--secondary);
}

.status.error {
  border-left-color: var(--error);
  color: var(--error);
}

.status.success {
  border-left-color: var(--secondary);
}

/* Controles */
.controls {
  display: flex;
  flex-direction: column;
  gap: var(--spacing);
  margin-bottom: calc(var(--spacing) * 2);
}

.control-group {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.control-group label {
  font-size: 0.9rem;
  color: #ccc;
}

/* Botones */
.btn {
  padding: 14px 24px;
  border: none;
  border-radius: var(--border-radius);
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.3s ease;
  text-align: center;
  outline: none;
}

.btn:focus-visible {
  outline: 3px solid var(--secondary);
  outline-offset: 2px;
}

.btn-primary {
  background: var(--primary);
  color: var(--on-primary);
}

.btn-primary:hover:not(:disabled) {
  background: var(--primary-dark);
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(98, 0, 234, 0.4);
}

.btn-secondary {
  background: var(--surface);
  color: var(--on-surface);
  border: 2px solid var(--secondary);
}

.btn-secondary:hover:not(:disabled) {
  background: var(--secondary);
  color: var(--background);
}

.btn-install {
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  color: var(--on-primary);
}

.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

/* Select y Range */
select, input[type="range"] {
  width: 100%;
  padding: 10px;
  background: var(--surface);
  color: var(--on-surface);
  border: 1px solid #333;
  border-radius: 8px;
  font-size: 1rem;
}

input[type="range"] {
  padding: 0;
  height: 6px;
  cursor: pointer;
}

input[type="range"]::-webkit-slider-thumb {
  appearance: none;
  width: 20px;
  height: 20px;
  background: var(--secondary);
  border-radius: 50%;
  cursor: pointer;
}

input[type="range"]::-moz-range-thumb {
  width: 20px;
  height: 20px;
  background: var(--secondary);
  border-radius: 50%;
  cursor: pointer;
  border: none;
}

/* Vista previa */
.preview-section {
  display: flex;
  justify-content: center;
  margin-bottom: calc(var(--spacing) * 2);
}

#canvas {
  border-radius: var(--border-radius);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.4);
  max-width: 100%;
  height: auto;
  background: var(--surface);
}

/* Predicciones */
.predictions-section h2 {
  font-size: 1.2rem;
  margin-bottom: var(--spacing);
  color: var(--secondary);
}

.predictions-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.empty-state {
  text-align: center;
  color: #666;
  padding: var(--spacing);
}

.prediction-item {
  background: var(--surface);
  padding: 12px;
  border-radius: 8px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  transition: transform 0.2s ease;
}

.prediction-item.top {
  border: 2px solid var(--secondary);
  background: rgba(3, 218, 198, 0.1);
}

.prediction-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.prediction-label {
  font-weight: 600;
  font-size: 1rem;
}

.prediction-percentage {
  font-size: 1.1rem;
  color: var(--secondary);
}

.prediction-bar {
  height: 8px;
  background: #333;
  border-radius: 4px;
  overflow: hidden;
}

.prediction-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--primary), var(--secondary));
  transition: width 0.3s ease;
}

/* FPS Counter */
.fps-counter {
  position: fixed;
  top: 10px;
  right: 10px;
  background: rgba(0, 0, 0, 0.8);
  padding: 8px 12px;
  border-radius: 6px;
  font-size: 0.85rem;
  font-family: 'Courier New', monospace;
  color: var(--secondary);
}

/* Footer */
footer {
  margin-top: auto;
  padding: var(--spacing);
  text-align: center;
  color: #666;
  font-size: 0.85rem;
}

/* Animaciones reducidas */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

/* Responsive */
@media (min-width: 768px) {
  h1 {
    font-size: 2.5rem;
  }
  
  .controls {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing);
  }
  
  .btn-primary {
    grid-column: 1 / -1;
  }
}