/* ========================================
   Doherty Threshold Demo
   ======================================== */

.comparison-section {
  text-align: center;
  margin-bottom: var(--space-12);
}

.comparison-title {
  font-family: var(--font-display);
  font-size: var(--text-xl);
  font-weight: 700;
  margin-bottom: var(--space-2);
}

.comparison-subtitle {
  color: var(--fg-muted);
  margin-bottom: var(--space-6);
  font-size: var(--text-sm);
}

.comparison-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--space-4);
}

/* Response Cards */
.response-demo {
  background: var(--bg);
  border: 1px solid var(--border);
  padding: var(--space-6);
  text-align: center;
}

.response-demo.fast {
  border-color: #22c55e;
}

.response-demo.slow {
  border-color: #eab308;
}

.response-header {
  margin-bottom: var(--space-5);
}

.response-header h3 {
  font-family: var(--font-display);
  font-size: var(--text-base);
  font-weight: 600;
  margin-top: var(--space-2);
}

.response-badge {
  display: inline-block;
  padding: var(--space-1) var(--space-3);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
}

.response-badge.fast {
  background: rgba(34, 197, 94, 0.1);
  color: #22c55e;
}

.response-badge.slow {
  background: rgba(234, 179, 8, 0.1);
  color: #eab308;
}

.response-area {
  min-height: 100px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--space-4);
}

/* Demo Buttons */
.demo-button {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-5);
  font-family: var(--font-display);
  font-size: var(--text-sm);
  font-weight: 600;
  border: none;
  cursor: pointer;
  transition: opacity 0.2s;
}

.demo-button.fast {
  background: #22c55e;
  color: white;
}

.demo-button.slow {
  background: #eab308;
  color: white;
}

.demo-button:hover {
  opacity: 0.9;
}

.demo-button.loading {
  opacity: 0.7;
  pointer-events: none;
}

.btn-icon {
  display: flex;
  opacity: 0;
  transform: scale(0);
  transition: all 0.2s var(--ease);
}

.demo-button.done .btn-icon {
  opacity: 1;
  transform: scale(1);
}

.demo-button.done .btn-text {
  opacity: 0.7;
}

/* Feedback */
.response-feedback {
  opacity: 0;
  transform: translateY(8px);
  transition: all 0.2s var(--ease);
}

.response-feedback.show {
  opacity: 1;
  transform: translateY(0);
}

.feedback-content {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-3);
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  font-size: var(--text-sm);
}

.feedback-icon {
  color: #22c55e;
  font-weight: bold;
}

.response-stats {
  margin-top: var(--space-4);
  padding-top: var(--space-4);
  border-top: 1px solid var(--border);
}

.click-count {
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  color: var(--fg-muted);
}

/* Slider Section */
.slider-section {
  background: var(--bg);
  border: 1px solid var(--border);
  padding: var(--space-8);
  margin-bottom: var(--space-12);
  text-align: center;
}

.section-title {
  font-family: var(--font-display);
  font-size: var(--text-base);
  font-weight: 700;
  margin-bottom: var(--space-2);
}

.section-subtitle {
  color: var(--fg-muted);
  margin-bottom: var(--space-6);
  font-size: var(--text-sm);
}

.slider-demo {
  max-width: 500px;
  margin: 0 auto;
}

.slider-control {
  margin-bottom: var(--space-6);
}

input[type="range"] {
  width: 100%;
  height: 8px;
  background: var(--border);
  -webkit-appearance: none;
  appearance: none;
  cursor: pointer;
  border-radius: 4px;
  margin: 0;
}

input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: var(--fg);
  cursor: pointer;
  border: 2px solid var(--bg);
  box-shadow: 0 2px 4px rgba(0,0,0,0.2);
  margin-top: -8px; /* Center thumb on 8px track: (24-8)/2 */
}

input[type="range"]::-moz-range-thumb {
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: var(--fg);
  cursor: pointer;
  border: 2px solid var(--bg);
  box-shadow: 0 2px 4px rgba(0,0,0,0.2);
}

input[type="range"]::-webkit-slider-runnable-track {
  height: 8px;
  background: var(--border);
  border-radius: 4px;
}

input[type="range"]::-moz-range-track {
  height: 8px;
  background: var(--border);
  border-radius: 4px;
}

.slider-labels {
  display: flex;
  justify-content: space-between;
  margin-top: var(--space-2);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--fg-faint);
}

.threshold-marker {
  color: #eab308;
  font-weight: 600;
}

.slider-value {
  margin-bottom: var(--space-6);
}

.current-delay {
  font-family: var(--font-display);
  font-size: var(--text-5xl);
  font-weight: 800;
}

.delay-unit {
  font-family: var(--font-mono);
  font-size: var(--text-lg);
  color: var(--fg-muted);
}

/* Test Button */
.test-button {
  padding: var(--space-2) var(--space-6);
  font-family: var(--font-display);
  font-size: var(--text-sm);
  font-weight: 600;
  background: var(--fg);
  color: var(--bg);
  border: none;
  cursor: pointer;
  min-width: 140px;
  transition: opacity 0.2s;
  position: relative;
}

.test-button:hover {
  opacity: 0.9;
}

.test-button.loading {
  pointer-events: none;
}

.test-button.loading .test-btn-text {
  opacity: 0;
}

.test-btn-loader {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 16px;
  height: 16px;
  border: 2px solid rgba(255, 255, 255, 0.3);
  border-top-color: white;
  border-radius: 50%;
  opacity: 0;
}

.test-button.loading .test-btn-loader {
  opacity: 1;
  animation: spin 0.6s linear infinite;
}

@keyframes spin {
  to { transform: translate(-50%, -50%) rotate(360deg); }
}

/* Delay Indicator */
.delay-indicator {
  margin-top: var(--space-5);
  padding: var(--space-2) var(--space-4);
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  display: inline-block;
  min-width: 140px;
  text-align: center;
}

.indicator-text {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: var(--text-sm);
}

.delay-indicator.instant .indicator-text { color: #22c55e; }
.delay-indicator.fast .indicator-text { color: #22c55e; }
.delay-indicator.okay .indicator-text { color: #eab308; }
.delay-indicator.slow .indicator-text { color: #ef4444; }

/* Timeline */
.timeline-section {
  margin-bottom: var(--space-12);
}

.timeline {
  margin-top: var(--space-6);
  position: relative;
}

.timeline-bar {
  display: flex;
  height: 48px;
  overflow: hidden;
}

.timeline-zone {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: var(--space-2);
  color: white;
  font-size: var(--text-xs);
}

.timeline-zone.instant { background: #10b981; }
.timeline-zone.fast { background: #22c55e; }
.timeline-zone.okay { background: #eab308; }
.timeline-zone.slow { background: #ef4444; }

.zone-label {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: var(--text-sm);
}

.zone-time {
  opacity: 0.8;
}

.timeline-marker {
  position: absolute;
  top: -8px;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
}

.marker-line {
  width: 2px;
  height: 64px;
  background: var(--fg);
}

.marker-label {
  margin-top: var(--space-2);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  text-align: center;
  color: var(--fg-muted);
}

@media (max-width: 600px) {
  .comparison-grid {
    grid-template-columns: 1fr;
  }

  .slider-section {
    padding: var(--space-5);
  }

  .current-delay {
    font-size: var(--text-4xl);
  }

  .timeline-bar {
    flex-direction: column;
    height: auto;
  }

  .timeline-zone {
    width: 100% !important;
    padding: var(--space-3) var(--space-4);
    flex-direction: row;
    justify-content: space-between;
  }

  .zone-label {
    font-size: var(--text-sm);
  }

  .zone-time {
    font-size: var(--text-xs);
    opacity: 0.8;
  }

  .timeline-marker {
    display: none;
  }
}