/* StaminaTrainer Design System */
:root {
  --bg-main: #0b0f19;
  --bg-card: #111827;
  --bg-subtle: #1f2937;
  --bg-hover: #374151;
  --border-color: #1e293b;
  --border-active: #38bdf8;
  
  --text-main: #f8fafc;
  --text-muted: #94a3b8;
  --text-dim: #64748b;
  
  --accent-cyan: #0ea5e9;
  --accent-teal: #14b8a6;
  --accent-emerald: #10b981;
  --accent-gold: #f59e0b;
  --accent-rose: #f43f5e;
  --accent-red: #ef4444;
  --accent-purple: #8b5cf6;

  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.4);
  --shadow-md: 0 4px 12px -1px rgba(0, 0, 0, 0.5);
  --shadow-glow: 0 0 25px rgba(14, 165, 233, 0.25);
  --shadow-fast: 0 0 30px rgba(245, 158, 11, 0.35);
  --shadow-stop: 0 0 35px rgba(239, 68, 68, 0.5);

  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 18px;
  --radius-full: 9999px;
  --transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

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

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  background-color: var(--bg-main);
  color: var(--text-main);
  line-height: 1.5;
  min-height: 100vh;
  padding: 24px 16px;
  display: flex;
  justify-content: center;
}

.font-mono {
  font-family: 'JetBrains Mono', monospace;
}

.highlight-gold {
  color: var(--accent-gold);
}

.text-emerald {
  color: var(--accent-emerald);
}

.hidden {
  display: none !important;
}

/* App Container */
.app-container {
  width: 100%;
  max-width: 920px;
  display: flex;
  flex-direction: column;
  gap: 20px;
}

/* Discrete Curtain / Panic Mode */
.discrete-curtain {
  position: fixed;
  inset: 0;
  background-color: #030712;
  z-index: 99999;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
}

.discrete-content {
  background: #111827;
  border: 1px solid #374151;
  padding: 40px;
  border-radius: var(--radius-lg);
  max-width: 480px;
  text-align: center;
}

.discrete-icon {
  font-size: 3rem;
  margin-bottom: 12px;
}

.neutral-text {
  color: var(--text-muted);
  margin: 16px 0 24px;
}

kbd {
  background: #1f2937;
  border: 1px solid #4b5563;
  padding: 2px 6px;
  border-radius: 4px;
  font-family: monospace;
}

/* Header */
.app-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  padding: 18px 24px;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
}

.header-brand {
  display: flex;
  align-items: center;
  gap: 16px;
}

.brand-logo {
  width: 48px;
  height: 48px;
  background: linear-gradient(135deg, var(--accent-cyan), var(--accent-teal));
  color: #000;
  font-weight: 800;
  font-size: 1.3rem;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  letter-spacing: -0.5px;
}

.brand-badge-row {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}

.brand-title {
  font-size: 1.45rem;
  font-weight: 800;
  color: #fff;
  letter-spacing: -0.5px;
}

.badge {
  font-size: 0.72rem;
  padding: 3px 8px;
  border-radius: var(--radius-full);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.badge-clinical {
  background: rgba(14, 165, 233, 0.15);
  color: var(--accent-cyan);
  border: 1px solid rgba(14, 165, 233, 0.3);
}

.badge-privacy {
  background: rgba(16, 185, 129, 0.15);
  color: var(--accent-emerald);
  border: 1px solid rgba(16, 185, 129, 0.3);
}

.brand-subtitle {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-top: 2px;
}

.header-actions {
  display: flex;
  gap: 10px;
}

/* Callout Banner */
.clinical-callout {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  background: rgba(14, 165, 233, 0.08);
  border: 1px solid rgba(14, 165, 233, 0.25);
  padding: 14px 18px;
  border-radius: var(--radius-md);
}

.callout-icon {
  font-size: 1.3rem;
  line-height: 1;
}

.callout-text {
  font-size: 0.88rem;
  color: #cbd5e1;
  line-height: 1.5;
}

.callout-text strong {
  color: #f8fafc;
}

/* Mode Navigation Tabs */
.mode-nav {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 10px;
}

.mode-tab {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  color: var(--text-muted);
  padding: 12px 14px;
  border-radius: var(--radius-md);
  cursor: pointer;
  text-align: left;
  transition: var(--transition);
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.mode-tab:hover {
  background: var(--bg-subtle);
  border-color: #334155;
}

.mode-tab.active {
  background: rgba(14, 165, 233, 0.12);
  border-color: var(--accent-cyan);
  color: #fff;
  box-shadow: inset 0 0 0 1px var(--accent-cyan);
}

.tab-title {
  font-weight: 700;
  font-size: 0.9rem;
  color: inherit;
}

.tab-desc {
  font-size: 0.74rem;
  color: var(--text-dim);
}

.mode-tab.active .tab-desc {
  color: #94a3b8;
}

/* Main Card */
.main-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 20px;
  box-shadow: var(--shadow-md);
}

/* --- WAVE SEQUENCER TIMELINE --- */
.wave-sequencer-card {
  background: #0f172a;
  border: 1px solid #1e293b;
  border-radius: var(--radius-md);
  padding: 16px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.wave-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 10px;
}

.wave-title-row {
  display: flex;
  align-items: center;
  gap: 10px;
}

.section-heading {
  font-size: 0.85rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  color: var(--text-muted);
}

.wave-cycle-badge {
  font-size: 0.82rem;
  font-weight: 700;
  background: rgba(14, 165, 233, 0.15);
  color: var(--accent-cyan);
  border: 1px solid rgba(14, 165, 233, 0.3);
  padding: 2px 10px;
  border-radius: var(--radius-full);
}

.wave-selector-presets {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
}

.wave-preset-btn {
  font-size: 0.75rem;
  padding: 4px 10px;
}

.wave-preset-btn.active {
  background: rgba(14, 165, 233, 0.2);
  border-color: var(--accent-cyan);
  color: #fff;
}

/* Timeline Sequencer Blocks */
.timeline-blocks-track {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  gap: 6px;
  overflow-x: auto;
  padding-bottom: 4px;
}

.t-block {
  background: #1e293b;
  border: 1px solid #334155;
  border-radius: var(--radius-sm);
  padding: 8px 6px;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  transition: var(--transition);
  position: relative;
}

.t-block-speed {
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
}

.t-block-bpm {
  font-size: 0.68rem;
  color: var(--text-dim);
  font-family: 'JetBrains Mono', monospace;
}

.t-block-dur {
  font-size: 0.68rem;
  color: #94a3b8;
  margin-top: 2px;
}

/* Block Speed Theme Types */
.t-block.speed-slow {
  border-color: rgba(20, 184, 166, 0.3);
  color: var(--accent-teal);
}

.t-block.speed-fast {
  border-color: rgba(245, 158, 11, 0.4);
  background: rgba(245, 158, 11, 0.08);
  color: var(--accent-gold);
}

.t-block.speed-medium {
  border-color: rgba(14, 165, 233, 0.3);
  color: var(--accent-cyan);
}

.t-block.speed-stop {
  border-color: rgba(239, 68, 68, 0.5);
  background: rgba(239, 68, 68, 0.12);
  color: #f87171;
  font-weight: 800;
}

.t-block.active {
  transform: translateY(-2px);
  box-shadow: 0 0 14px currentColor;
  border-color: #fff;
}

.t-block.active::after {
  content: '▼';
  position: absolute;
  top: -12px;
  font-size: 0.6rem;
  color: #fff;
}

/* Levels Selector (Guided mode) */
.levels-selector-bar {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.levels-label-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.level-indicator-badge {
  font-size: 0.82rem;
  font-weight: 700;
  background: rgba(139, 92, 246, 0.15);
  color: #c084fc;
  border: 1px solid rgba(139, 92, 246, 0.3);
  padding: 2px 10px;
  border-radius: var(--radius-full);
}

.levels-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 10px;
}

.level-card {
  background: var(--bg-subtle);
  border: 1px solid #334155;
  color: var(--text-muted);
  padding: 12px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  text-align: left;
  transition: var(--transition);
}

.level-card:hover {
  background: var(--bg-hover);
  border-color: #475569;
}

.level-card.active {
  background: rgba(14, 165, 233, 0.12);
  border-color: var(--accent-cyan);
  color: #fff;
  box-shadow: 0 0 12px rgba(14, 165, 233, 0.2);
}

.level-num {
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  color: var(--accent-cyan);
}

.level-name {
  font-size: 0.88rem;
  font-weight: 600;
  margin: 2px 0 4px;
}

.level-spec {
  font-size: 0.72rem;
  color: var(--text-dim);
  line-height: 1.3;
}

/* Goal Progress Bar */
.goal-progress-section {
  background: #0f172a;
  border: 1px solid #1e293b;
  border-radius: var(--radius-md);
  padding: 12px 16px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.goal-progress-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.82rem;
}

.goal-title {
  color: var(--text-muted);
  font-weight: 600;
}

.goal-stats {
  color: #e2e8f0;
}

.goal-progress-track {
  width: 100%;
  height: 8px;
  background: #1e293b;
  border-radius: var(--radius-full);
  overflow: hidden;
}

.goal-progress-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--accent-teal), var(--accent-cyan), var(--accent-gold));
  border-radius: var(--radius-full);
  transition: width 0.4s ease;
}

/* Metrics HUD */
.metrics-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 12px;
}

.metric-card {
  background: var(--bg-subtle);
  border: 1px solid var(--border-color);
  padding: 14px;
  border-radius: var(--radius-md);
  text-align: center;
}

.metric-label {
  font-size: 0.75rem;
  color: var(--text-dim);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: 4px;
}

.metric-value {
  font-size: 1.6rem;
  font-weight: 700;
  color: #fff;
}

.metric-value .unit {
  font-size: 0.8rem;
  font-weight: 400;
  color: var(--text-muted);
}

/* Visualizer Pulse Deck */
.visualizer-wrapper {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-height: 270px;
  padding: 16px 20px 24px 20px;
  background: radial-gradient(circle, rgba(14, 165, 233, 0.05) 0%, rgba(15, 23, 42, 0.4) 100%);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: var(--transition);
}

.visualizer-notification-zone {
  width: 100%;
  min-height: 46px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 6px;
  z-index: 10;
}

.pulse-aura {
  position: absolute;
  width: 200px;
  height: 200px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(14, 165, 233, 0.25) 0%, rgba(14, 165, 233, 0) 70%);
  transform: scale(1);
  transition: transform 0.08s ease-out, opacity 0.08s ease-out;
  pointer-events: none;
}

.pulse-aura.beat {
  transform: scale(1.45);
  opacity: 1;
}

.pulse-center {
  position: relative;
  z-index: 2;
  text-align: center;
  padding: 0 16px 12px 16px;
}

.pulse-phase-badge {
  display: inline-block;
  font-size: 0.85rem;
  font-weight: 800;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  padding: 4px 14px;
  border-radius: var(--radius-full);
  margin-bottom: 8px;
  background: rgba(14, 165, 233, 0.15);
  color: var(--accent-cyan);
  border: 1px solid rgba(14, 165, 233, 0.3);
}

.pulse-cue {
  font-size: 1.45rem;
  font-weight: 800;
  color: #f8fafc;
  margin-bottom: 8px;
  max-width: 580px;
  line-height: 1.35;
}

.pulse-subcue {
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--text-muted);
}

/* Phase Specific Visualizer Theming */
.visualizer-wrapper.phase-slow {
  border-color: rgba(20, 184, 166, 0.4);
  background: radial-gradient(circle, rgba(20, 184, 166, 0.1) 0%, rgba(15, 23, 42, 0.5) 100%);
}
.visualizer-wrapper.phase-slow .pulse-phase-badge {
  color: var(--accent-teal);
  border-color: rgba(20, 184, 166, 0.4);
  background: rgba(20, 184, 166, 0.15);
}
.visualizer-wrapper.phase-slow .pulse-aura {
  background: radial-gradient(circle, rgba(20, 184, 166, 0.3) 0%, rgba(20, 184, 166, 0) 70%);
}

.visualizer-wrapper.phase-fast {
  border-color: rgba(245, 158, 11, 0.5);
  box-shadow: var(--shadow-fast);
  background: radial-gradient(circle, rgba(245, 158, 11, 0.15) 0%, rgba(15, 23, 42, 0.6) 100%);
}
.visualizer-wrapper.phase-fast .pulse-phase-badge {
  color: #000;
  background: var(--accent-gold);
  border-color: #fff;
  font-weight: 900;
}
.visualizer-wrapper.phase-fast .pulse-cue {
  color: #fef08a;
}
.visualizer-wrapper.phase-fast .pulse-aura {
  background: radial-gradient(circle, rgba(245, 158, 11, 0.45) 0%, rgba(245, 158, 11, 0) 70%);
}

.visualizer-wrapper.phase-stop {
  border-color: rgba(239, 68, 68, 0.7);
  box-shadow: var(--shadow-stop);
  background: radial-gradient(circle, rgba(239, 68, 68, 0.22) 0%, rgba(15, 23, 42, 0.7) 100%);
}
.visualizer-wrapper.phase-stop .pulse-phase-badge {
  color: #fff;
  background: var(--accent-red);
  font-weight: 900;
  animation: pulse-glow 1.2s infinite;
}
.visualizer-wrapper.phase-stop .pulse-cue {
  color: #fecdd3;
}
.visualizer-wrapper.phase-stop .pulse-aura {
  background: radial-gradient(circle, rgba(239, 68, 68, 0.5) 0%, rgba(239, 68, 68, 0) 70%);
}

/* Hands Off Emergency Alert Banner */
.hands-off-banner {
  display: flex;
  align-items: center;
  gap: 16px;
  background: linear-gradient(135deg, rgba(225, 29, 72, 0.25), rgba(153, 27, 27, 0.35));
  border: 2px solid #ef4444;
  border-radius: var(--radius-md);
  padding: 16px 20px;
  box-shadow: 0 0 25px rgba(239, 68, 68, 0.4);
  animation: banner-pulse 1s infinite alternate;
}

@keyframes banner-pulse {
  from { border-color: #ef4444; }
  to { border-color: #fecdd3; }
}

.hands-off-banner .alert-icon {
  font-size: 2.4rem;
}

.hands-off-banner h2 {
  font-size: 1.3rem;
  font-weight: 900;
  color: #fef2f2;
  letter-spacing: 0.5px;
}

.hands-off-banner p {
  font-size: 0.88rem;
  color: #fecdd3;
  margin-top: 2px;
}

/* --- CHARTS STYLING --- */
.chart-container-card {
  background: #0f172a;
  border: 1px solid #1e293b;
  border-radius: var(--radius-md);
  padding: 18px;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.chart-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 10px;
}

.chart-title {
  font-size: 0.95rem;
  font-weight: 700;
  color: #f8fafc;
}

.chart-subtitle {
  font-size: 0.78rem;
  color: var(--text-dim);
}

.chart-legend {
  display: flex;
  align-items: center;
  gap: 14px;
  font-size: 0.78rem;
  color: var(--text-muted);
}

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

.legend-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  display: inline-block;
}

.dot-bpm {
  background-color: var(--accent-cyan);
  box-shadow: 0 0 6px var(--accent-cyan);
}

.dot-arousal {
  background-color: var(--accent-rose);
  box-shadow: 0 0 6px var(--accent-rose);
}

.dot-edge {
  background-color: var(--accent-gold);
  box-shadow: 0 0 6px var(--accent-gold);
}

.canvas-wrapper {
  width: 100%;
  background: #090d16;
  border: 1px solid #1e293b;
  border-radius: var(--radius-sm);
  overflow: hidden;
  position: relative;
}

.canvas-wrapper canvas {
  display: block;
  width: 100%;
  height: auto;
}

/* Tempo Control Panel */
.tempo-control-panel {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.tempo-preset-group {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(110px, 1fr));
  gap: 10px;
}

.tempo-btn {
  background: var(--bg-subtle);
  border: 1px solid #334155;
  color: var(--text-muted);
  padding: 10px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  display: flex;
  flex-direction: column;
  align-items: center;
  transition: var(--transition);
}

.tempo-btn:hover {
  background: var(--bg-hover);
  border-color: #475569;
}

.tempo-btn.active {
  background: rgba(14, 165, 233, 0.15);
  border-color: var(--accent-cyan);
  color: #fff;
}

.speed-name {
  font-size: 0.85rem;
  font-weight: 600;
}

.speed-bpm {
  font-size: 0.75rem;
  color: var(--text-dim);
}

.tempo-btn.active .speed-bpm {
  color: var(--accent-cyan);
}

.tempo-slider-row {
  display: flex;
  align-items: center;
  gap: 14px;
}

.slider-label {
  font-size: 0.85rem;
  color: var(--text-muted);
  white-space: nowrap;
}

.custom-slider {
  flex: 1;
  -webkit-appearance: none;
  appearance: none;
  height: 6px;
  background: #334155;
  border-radius: var(--radius-full);
  outline: none;
}

.custom-slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: var(--accent-cyan);
  cursor: pointer;
  box-shadow: 0 0 8px rgba(14, 165, 233, 0.6);
  transition: transform 0.1s;
}

/* Primary Action Buttons */
.primary-controls {
  display: flex;
  flex-direction: column;
  gap: 10px;
  width: 100%;
}

.controls-row {
  display: flex;
  gap: 10px;
  width: 100%;
  align-items: stretch;
}

.main-actions #btn-start-pause {
  flex: 0 0 190px;
}

.main-actions #btn-edge-trigger {
  flex: 1;
  min-width: 0;
}

.secondary-actions #btn-climax-end {
  flex: 1;
  min-width: 0;
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 20px;
}

.secondary-actions #btn-reset-session {
  flex: 0 0 120px;
}


.btn {
  font-family: inherit;
  font-size: 0.95rem;
  font-weight: 600;
  border-radius: var(--radius-md);
  border: 1px solid transparent;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  transition: var(--transition);
  padding: 12px 20px;
}

.btn-large {
  padding: 16px 24px;
}

.btn-primary {
  background: linear-gradient(135deg, #0284c7, #0ea5e9);
  color: #fff;
  box-shadow: var(--shadow-glow);
}

.btn-primary:hover {
  background: linear-gradient(135deg, #0369a1, #0284c7);
}

.btn-secondary {
  background: var(--bg-subtle);
  border-color: #334155;
  color: var(--text-muted);
}

.btn-secondary:hover {
  background: var(--bg-hover);
  color: #fff;
}

.btn-subtle {
  background: transparent;
  border-color: #334155;
  color: var(--text-muted);
  padding: 6px 12px;
  font-size: 0.85rem;
}

.btn-subtle:hover {
  background: var(--bg-subtle);
  color: #fff;
}

.btn-small {
  padding: 4px 10px;
  font-size: 0.78rem;
}

/* Big EDGE TRIGGER Button */
.btn-edge {
  flex: 1;
  min-width: 0;
  background: linear-gradient(135deg, #be123c, #e11d48);
  color: #fff;
  border: 1px solid #f43f5e;
  border-radius: var(--radius-md);
  box-shadow: 0 0 25px rgba(244, 63, 94, 0.3);
  flex-direction: column;
  padding: 14px 20px;
  position: relative;
  overflow: hidden;
}

.btn-edge:not(:disabled):hover {
  background: linear-gradient(135deg, #9f1239, #be123c);
  transform: translateY(-1px);
}

.btn-edge:disabled {
  opacity: 0.4;
  cursor: not-allowed;
  box-shadow: none;
}

.btn-edge-text {
  font-size: 1.05rem;
  font-weight: 800;
  letter-spacing: 0.5px;
}

.btn-subtext {
  font-size: 0.75rem;
  font-weight: 400;
  opacity: 0.85;
}

.edge-pulse-dot {
  position: absolute;
  top: 10px;
  right: 12px;
  width: 10px;
  height: 10px;
  background: #fecdd3;
  border-radius: 50%;
  box-shadow: 0 0 8px #fff;
  animation: pulse-glow 1.5s infinite;
}

@keyframes pulse-glow {
  0% { transform: scale(0.9); opacity: 0.7; }
  50% { transform: scale(1.3); opacity: 1; }
  100% { transform: scale(0.9); opacity: 0.7; }
}

/* Resume Pacing State on Brake Button */
.btn-edge.btn-resume-mode {
  background: linear-gradient(135deg, #059669, #10b981) !important;
  border-color: #34d399 !important;
  box-shadow: 0 0 25px rgba(16, 185, 129, 0.45) !important;
}

.btn-edge.btn-resume-mode:not(:disabled):hover {
  background: linear-gradient(135deg, #047857, #059669) !important;
  box-shadow: 0 0 32px rgba(52, 211, 153, 0.6) !important;
}

.btn-edge.btn-resume-mode .edge-pulse-dot {
  background: #a7f3d0 !important;
  box-shadow: 0 0 10px #34d399 !important;
}

/* Arousal Gauge Section */
.arousal-section {
  background: #0f172a;
  border: 1px solid #1e293b;
  border-radius: var(--radius-md);
  padding: 16px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.section-title-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.section-title {
  font-size: 0.85rem;
  color: var(--text-muted);
  font-weight: 600;
}

.arousal-badge {
  font-size: 0.78rem;
  font-weight: 700;
  padding: 3px 10px;
  border-radius: var(--radius-full);
}

.lvl-1, .lvl-2, .lvl-3 {
  background: rgba(16, 185, 129, 0.15);
  color: var(--accent-emerald);
  border: 1px solid rgba(16, 185, 129, 0.3);
}

.lvl-4, .lvl-5, .lvl-6 {
  background: rgba(245, 158, 11, 0.15);
  color: var(--accent-gold);
  border: 1px solid rgba(245, 158, 11, 0.3);
}

.lvl-7, .lvl-8 {
  background: rgba(244, 63, 94, 0.2);
  color: #fb7185;
  border: 1px solid rgba(244, 63, 94, 0.4);
}

.lvl-9, .lvl-10 {
  background: #e11d48;
  color: #fff;
  font-weight: 800;
}

.arousal-slider {
  width: 100%;
  -webkit-appearance: none;
  appearance: none;
  height: 8px;
  background: linear-gradient(90deg, #10b981 0%, #f59e0b 60%, #ef4444 80%, #991b1b 100%);
  border-radius: var(--radius-full);
  outline: none;
}

.arousal-slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 22px;
  height: 22px;
  border-radius: 50%;
  background: #ffffff;
  border: 2px solid #0f172a;
  box-shadow: 0 0 10px rgba(255, 255, 255, 0.5);
  cursor: pointer;
}

.arousal-ticks {
  display: flex;
  justify-content: space-between;
  font-size: 0.72rem;
  color: var(--text-dim);
}

.arousal-guidance {
  font-size: 0.84rem;
  color: #cbd5e1;
  background: rgba(255, 255, 255, 0.03);
  padding: 8px 12px;
  border-radius: var(--radius-sm);
  border-left: 3px solid var(--accent-cyan);
}

/* Subpanels */
.subpanel {
  background: var(--bg-subtle);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 16px;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.subpanel-title {
  font-size: 0.95rem;
  font-weight: 700;
  color: #e2e8f0;
}

.subpanel-desc {
  font-size: 0.85rem;
  color: var(--text-muted);
  line-height: 1.4;
}

/* Guided Flow Steps */
.guided-flow-preview {
  display: flex;
  align-items: center;
  gap: 8px;
  overflow-x: auto;
  padding: 6px 0;
}

.flow-step {
  background: #0f172a;
  border: 1px solid #334155;
  font-size: 0.78rem;
  padding: 6px 10px;
  border-radius: var(--radius-sm);
  color: var(--text-dim);
  white-space: nowrap;
}

.flow-step.active {
  background: rgba(14, 165, 233, 0.15);
  border-color: var(--accent-cyan);
  color: #fff;
  font-weight: 600;
}

.flow-arrow {
  color: var(--text-dim);
  font-size: 0.8rem;
}

/* Settings Row & Toggles */
.settings-row {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.toggle-control {
  display: flex;
  align-items: center;
  gap: 10px;
  cursor: pointer;
  font-size: 0.85rem;
  color: #cbd5e1;
}

.toggle-control input {
  display: none;
}

.toggle-slider {
  width: 36px;
  height: 20px;
  background: #334155;
  border-radius: var(--radius-full);
  position: relative;
  transition: var(--transition);
  flex-shrink: 0;
}

.toggle-slider::after {
  content: '';
  position: absolute;
  top: 2px;
  left: 2px;
  width: 16px;
  height: 16px;
  background: #fff;
  border-radius: 50%;
  transition: var(--transition);
}

.toggle-control input:checked + .toggle-slider {
  background: var(--accent-cyan);
}

.toggle-control input:checked + .toggle-slider::after {
  transform: translateX(16px);
}

/* Kegel Lab Visual Guide */
.kegel-presets {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
}

.kegel-preset-btn {
  display: flex;
  flex-direction: column;
  text-align: left;
  padding: 10px 14px;
}

.kegel-preset-btn small {
  color: var(--text-dim);
  font-size: 0.72rem;
  margin-top: 2px;
}

.kegel-preset-btn.active {
  border-color: var(--accent-purple);
  background: rgba(139, 92, 246, 0.15);
  color: #fff;
}

.kegel-visual-guide {
  display: flex;
  align-items: center;
  gap: 20px;
  background: #0f172a;
  border: 1px solid #1e293b;
  padding: 16px;
  border-radius: var(--radius-md);
}

.kegel-status-ring {
  width: 100px;
  height: 100px;
  border-radius: 50%;
  border: 4px solid var(--accent-purple);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  text-align: center;
  transition: var(--transition);
}

.kegel-status-ring.squeeze {
  border-color: var(--accent-rose);
  transform: scale(0.9);
  background: rgba(244, 63, 94, 0.1);
}

.kegel-status-ring.reverse-drop {
  border-color: var(--accent-teal);
  transform: scale(1.1);
  background: rgba(20, 184, 166, 0.1);
}

#kegel-action-text {
  font-size: 0.75rem;
  font-weight: 800;
  text-transform: uppercase;
}

#kegel-counter {
  font-size: 1.4rem;
  font-weight: 700;
}

.kegel-instruction-box {
  font-size: 0.88rem;
  color: #cbd5e1;
  line-height: 1.4;
}

/* Settings Card */
.settings-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 20px 24px;
}

.settings-header {
  font-size: 1.05rem;
  font-weight: 700;
  color: #fff;
  margin-bottom: 16px;
}

.settings-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
}

.setting-item {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.setting-item label {
  font-size: 0.82rem;
  color: var(--text-muted);
  font-weight: 500;
}

.custom-select {
  background: var(--bg-subtle);
  border: 1px solid #334155;
  color: #fff;
  padding: 10px 12px;
  border-radius: var(--radius-sm);
  font-family: inherit;
  font-size: 0.85rem;
  outline: none;
}

.custom-select:focus {
  border-color: var(--accent-cyan);
}

/* History Card */
.history-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 20px 24px;
}

.history-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 14px;
}

.history-title {
  font-size: 1.05rem;
  font-weight: 700;
  color: #fff;
}

.history-sub {
  font-size: 0.78rem;
  color: var(--text-dim);
}

.history-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.history-empty {
  font-size: 0.85rem;
  color: var(--text-dim);
  text-align: center;
  padding: 20px;
  background: var(--bg-subtle);
  border-radius: var(--radius-sm);
}

.history-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  background: var(--bg-subtle);
  border: 1px solid var(--border-color);
  padding: 10px 14px;
  border-radius: var(--radius-sm);
  font-size: 0.85rem;
}

.history-date {
  color: var(--text-dim);
  font-size: 0.78rem;
}

.history-tags {
  display: flex;
  gap: 8px;
}

.history-tag {
  background: #0f172a;
  border: 1px solid #334155;
  padding: 2px 8px;
  border-radius: var(--radius-full);
  font-size: 0.75rem;
}

/* Guide Card */
.guide-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 20px 24px;
}

.guide-title {
  font-size: 1.05rem;
  font-weight: 700;
  color: #fff;
  margin-bottom: 14px;
}

.guide-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}

.guide-item h4 {
  font-size: 0.88rem;
  color: var(--accent-cyan);
  margin-bottom: 6px;
}

.guide-item p {
  font-size: 0.8rem;
  color: var(--text-muted);
  line-height: 1.45;
}

/* Footer */
.app-footer {
  text-align: center;
  font-size: 0.75rem;
  color: var(--text-dim);
  padding: 12px 0 24px;
  line-height: 1.5;
}

/* Modal */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(3, 7, 18, 0.85);
  backdrop-filter: blur(8px);
  z-index: 10000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
}

.modal-card {
  background: #111827;
  border: 1px solid #38bdf8;
  border-radius: var(--radius-lg);
  padding: 32px;
  max-width: 520px;
  width: 100%;
  text-align: center;
  box-shadow: 0 0 40px rgba(56, 189, 248, 0.3);
  animation: modal-appear 0.3s ease-out;
}

@keyframes modal-appear {
  from { transform: scale(0.92); opacity: 0; }
  to { transform: scale(1); opacity: 1; }
}

.modal-badge-icon {
  font-size: 3.5rem;
  margin-bottom: 8px;
}

.modal-title {
  font-size: 1.6rem;
  font-weight: 800;
  color: #fff;
  margin-bottom: 6px;
}

.modal-desc {
  font-size: 0.9rem;
  color: #cbd5e1;
  margin-bottom: 20px;
}

.modal-stats-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
  background: #0f172a;
  border: 1px solid #1e293b;
  padding: 16px;
  border-radius: var(--radius-md);
  margin-bottom: 20px;
  text-align: left;
}

.m-stat {
  display: flex;
  flex-direction: column;
}

.m-label {
  font-size: 0.72rem;
  color: var(--text-dim);
  text-transform: uppercase;
}

.m-val {
  font-size: 1.2rem;
  font-weight: 700;
  color: #fff;
}

.modal-advice {
  font-size: 0.82rem;
  color: #94a3b8;
  background: rgba(14, 165, 233, 0.08);
  border-left: 3px solid var(--accent-cyan);
  padding: 10px 14px;
  border-radius: var(--radius-sm);
  text-align: left;
  margin-bottom: 24px;
}

.modal-actions {
  display: flex;
  justify-content: center;
}

/* Responsive adjustments */
@media (max-width: 768px) {
  .mode-nav {
    grid-template-columns: repeat(2, 1fr);
  }
  .levels-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .timeline-blocks-track {
    grid-template-columns: repeat(4, 1fr);
  }
  .metrics-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .settings-grid {
    grid-template-columns: 1fr;
  }
  .guide-grid {
    grid-template-columns: 1fr;
  }
  .primary-controls {
    flex-direction: column;
  }
  .controls-row {
    flex-direction: column;
  }
  .main-actions #btn-start-pause,
  .secondary-actions #btn-reset-session {
    flex: 1 1 auto;
    width: 100%;
  }
  .chart-header {
    flex-direction: column;
    align-items: flex-start;
  }
}

.quick-shift-row {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
  padding: 8px 0;
}

.quick-shift-btn {
  background: #1e293b;
  border-color: #38bdf8;
  color: #38bdf8;
  font-weight: 700;
  transition: var(--transition);
}

.quick-shift-btn:hover {
  background: rgba(14, 165, 233, 0.2);
  color: #fff;
  transform: translateY(-1px);
}

.relentless-control-card {
  background: #0f172a;
  border: 1px solid #0284c7;
  border-radius: var(--radius-sm);
  padding: 14px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  box-shadow: 0 0 15px rgba(2, 132, 199, 0.15);
}

.relentless-options-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
  margin-top: 6px;
}

/* ==========================================================================
   ENLARGED TACTILE BIOFEEDBACK AROUSAL GAUGE (1-10)
   Designed for rapid one-handed / thumb tapping and clear sensory feedback.
   ========================================================================== */

.arousal-section.enlarged-arousal-section {
  background: #0d1527;
  border: 1px solid #1e293b;
  border-radius: var(--radius-md);
  padding: 18px;
  display: flex;
  flex-direction: column;
  gap: 14px;
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.05), 0 4px 16px rgba(0, 0, 0, 0.4);
}

.arousal-badge {
  font-size: 0.85rem;
  font-weight: 800;
  padding: 6px 14px;
  border-radius: var(--radius-full);
  letter-spacing: 0.3px;
  display: inline-flex;
  align-items: center;
  transition: var(--transition);
}

.arousal-badge.lvl-1, .arousal-badge.lvl-2, .arousal-badge.lvl-3 {
  background: rgba(16, 185, 129, 0.2);
  color: #34d399;
  border: 1px solid rgba(16, 185, 129, 0.4);
}

.arousal-badge.lvl-4, .arousal-badge.lvl-5 {
  background: rgba(245, 158, 11, 0.2);
  color: #fbbf24;
  border: 1px solid rgba(245, 158, 11, 0.4);
}

.arousal-badge.lvl-6, .arousal-badge.lvl-7 {
  background: rgba(249, 115, 22, 0.25);
  color: #fb923c;
  border: 1px solid rgba(249, 115, 22, 0.5);
}

.arousal-badge.lvl-8, .arousal-badge.lvl-9, .arousal-badge.lvl-10 {
  background: rgba(239, 68, 68, 0.3);
  color: #fca5a5;
  border: 1px solid #ef4444;
  box-shadow: 0 0 12px rgba(239, 68, 68, 0.4);
  animation: pulse-glow 1.2s infinite alternate;
}

/* 10-Button Tactile Strip */
.arousal-tactile-strip {
  display: grid;
  grid-template-columns: repeat(10, 1fr);
  gap: 8px;
  width: 100%;
}

.arousal-tap-btn {
  background: #131d31;
  border: 1px solid #22324e;
  border-radius: var(--radius-sm);
  padding: 10px 4px;
  min-height: 64px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 3px;
  cursor: pointer;
  user-select: none;
  touch-action: manipulation;
  transition: all 0.15s cubic-bezier(0.4, 0, 0.2, 1);
}

.arousal-tap-btn:hover {
  transform: translateY(-2px);
}

.arousal-tap-btn:active {
  transform: scale(0.95);
}

.arousal-tap-btn .btn-lvl-num {
  font-family: 'JetBrains Mono', monospace;
  font-size: 1.25rem;
  font-weight: 900;
  line-height: 1;
}

.arousal-tap-btn .btn-lvl-sub {
  font-size: 0.62rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.4px;
  line-height: 1;
}

/* Level Color Tiers */
/* TIER 1 (1-3): Calm / Low - Emerald */
.arousal-tap-btn.lvl-btn-1,
.arousal-tap-btn.lvl-btn-2,
.arousal-tap-btn.lvl-btn-3 {
  border-color: rgba(16, 185, 129, 0.3);
  color: #6ee7b7;
}

.arousal-tap-btn.lvl-btn-1:hover,
.arousal-tap-btn.lvl-btn-2:hover,
.arousal-tap-btn.lvl-btn-3:hover {
  background: rgba(16, 185, 129, 0.15);
  border-color: #10b981;
}

.arousal-tap-btn.lvl-btn-1.active,
.arousal-tap-btn.lvl-btn-2.active,
.arousal-tap-btn.lvl-btn-3.active {
  background: #10b981;
  border-color: #34d399;
  color: #064e3b;
  font-weight: 900;
  box-shadow: 0 0 16px rgba(16, 185, 129, 0.6);
  transform: translateY(-2px) scale(1.04);
}

/* TIER 2 (4-5): Build / Moderate - Gold */
.arousal-tap-btn.lvl-btn-4,
.arousal-tap-btn.lvl-btn-5 {
  border-color: rgba(245, 158, 11, 0.3);
  color: #fde68a;
}

.arousal-tap-btn.lvl-btn-4:hover,
.arousal-tap-btn.lvl-btn-5:hover {
  background: rgba(245, 158, 11, 0.15);
  border-color: #f59e0b;
}

.arousal-tap-btn.lvl-btn-4.active,
.arousal-tap-btn.lvl-btn-5.active {
  background: #f59e0b;
  border-color: #fbbf24;
  color: #451a03;
  font-weight: 900;
  box-shadow: 0 0 16px rgba(245, 158, 11, 0.6);
  transform: translateY(-2px) scale(1.04);
}

/* TIER 3 (6-7): High / Edge - Orange */
.arousal-tap-btn.lvl-btn-6,
.arousal-tap-btn.lvl-btn-7 {
  border-color: rgba(249, 115, 22, 0.4);
  color: #fdba74;
}

.arousal-tap-btn.lvl-btn-6:hover,
.arousal-tap-btn.lvl-btn-7:hover {
  background: rgba(249, 115, 22, 0.2);
  border-color: #f97316;
}

.arousal-tap-btn.lvl-btn-6.active,
.arousal-tap-btn.lvl-btn-7.active {
  background: #f97316;
  border-color: #fdba74;
  color: #431407;
  font-weight: 900;
  box-shadow: 0 0 20px rgba(249, 115, 22, 0.7);
  transform: translateY(-2px) scale(1.04);
}

/* TIER 4 (8-10): Brink / Danger / Climax - Red */
.arousal-tap-btn.lvl-btn-8,
.arousal-tap-btn.lvl-btn-9,
.arousal-tap-btn.lvl-btn-10 {
  border-color: rgba(239, 68, 68, 0.45);
  color: #fca5a5;
}

.arousal-tap-btn.lvl-btn-8:hover,
.arousal-tap-btn.lvl-btn-9:hover,
.arousal-tap-btn.lvl-btn-10:hover {
  background: rgba(239, 68, 68, 0.25);
  border-color: #ef4444;
}

.arousal-tap-btn.lvl-btn-8.active,
.arousal-tap-btn.lvl-btn-9.active,
.arousal-tap-btn.lvl-btn-10.active {
  background: #ef4444;
  border-color: #fca5a5;
  color: #ffffff;
  font-weight: 900;
  box-shadow: 0 0 24px rgba(239, 68, 68, 0.85);
  transform: translateY(-2px) scale(1.06);
  animation: danger-pulse 1s infinite alternate;
}

@keyframes danger-pulse {
  from { box-shadow: 0 0 14px rgba(239, 68, 68, 0.6); }
  to { box-shadow: 0 0 26px rgba(239, 68, 68, 1); }
}

/* Biofeedback Engine Action Bar */
.biofeedback-action-bar {
  display: flex;
  align-items: center;
  gap: 12px;
  background: linear-gradient(90deg, rgba(14, 165, 233, 0.12), rgba(2, 132, 199, 0.04));
  border: 1px solid rgba(14, 165, 233, 0.35);
  border-radius: var(--radius-sm);
  padding: 10px 14px;
  transition: all 0.25s ease;
}

.biofeedback-action-bar.tier-pressure {
  background: linear-gradient(90deg, rgba(14, 165, 233, 0.18), rgba(16, 185, 129, 0.08));
  border-color: #0ea5e9;
}

.biofeedback-action-bar.tier-alternate {
  background: linear-gradient(90deg, rgba(245, 158, 11, 0.18), rgba(249, 115, 22, 0.08));
  border-color: #f59e0b;
}

.biofeedback-action-bar.tier-edge {
  background: linear-gradient(90deg, rgba(249, 115, 22, 0.22), rgba(239, 68, 68, 0.1));
  border-color: #f97316;
}

.biofeedback-action-bar.tier-brink {
  background: linear-gradient(90deg, rgba(239, 68, 68, 0.3), rgba(185, 28, 28, 0.18));
  border-color: #ef4444;
  box-shadow: 0 0 16px rgba(239, 68, 68, 0.35);
  animation: banner-pulse 1s infinite alternate;
}

.pulse-indicator-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: #38bdf8;
  box-shadow: 0 0 8px #38bdf8;
  flex-shrink: 0;
  animation: dot-glow 1.2s infinite alternate;
}

.biofeedback-action-bar.tier-brink .pulse-indicator-dot {
  background: #ef4444;
  box-shadow: 0 0 10px #ef4444;
}

@keyframes dot-glow {
  from { transform: scale(0.85); opacity: 0.6; }
  to { transform: scale(1.2); opacity: 1; }
}

#biofeedback-action-text {
  font-size: 0.85rem;
  font-weight: 700;
  color: #f1f5f9;
  line-height: 1.35;
}

/* Enlarged Slider */
.enlarged-slider {
  height: 10px;
  border-radius: 5px;
  background: linear-gradient(to right, #10b981 0%, #f59e0b 50%, #f97316 75%, #ef4444 100%);
  outline: none;
  cursor: pointer;
}

.enlarged-slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 26px;
  height: 26px;
  border-radius: 50%;
  background: #ffffff;
  border: 3px solid #0284c7;
  box-shadow: 0 0 10px rgba(0, 0, 0, 0.5);
  cursor: pointer;
  transition: transform 0.1s;
}

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

.arousal-guidance {
  font-size: 0.82rem;
  color: #94a3b8;
  line-height: 1.4;
}

@media (max-width: 768px) {
  .arousal-tactile-strip {
    grid-template-columns: repeat(5, 1fr);
    gap: 6px;
  }
  .arousal-tap-btn {
    min-height: 56px;
    padding: 8px 2px;
  }
}

/* ==========================================================================
   EJACULATION & CLIMAX END BUTTON & DEBRIEF STYLES
   ========================================================================== */

.btn-climax,
.btn-ejaculation {
  background: linear-gradient(135deg, #7c3aed 0%, #6366f1 50%, #4f46e5 100%);
  border: 2px solid #a78bfa;
  border-radius: var(--radius-md);
  color: #ffffff;
  box-shadow: 0 0 22px rgba(124, 58, 237, 0.4);
  position: relative;
  overflow: hidden;
  cursor: pointer;
  transition: var(--transition);
}

.btn-climax:hover:not(:disabled),
.btn-ejaculation:hover:not(:disabled) {
  background: linear-gradient(135deg, #8b5cf6 0%, #7c3aed 50%, #6366f1 100%);
  border-color: #c4b5fd;
  box-shadow: 0 0 32px rgba(167, 139, 250, 0.75);
  transform: translateY(-2px);
}

.btn-climax:active:not(:disabled),
.btn-ejaculation:active:not(:disabled) {
  transform: scale(0.98);
}

.btn-climax:disabled,
.btn-ejaculation:disabled {
  opacity: 0.75;
  cursor: pointer;
  box-shadow: 0 0 10px rgba(124, 58, 237, 0.25);
  filter: none;
}

.climax-icon {
  font-size: 1.4rem;
  margin-right: 6px;
  display: inline-block;
  vertical-align: middle;
  flex-shrink: 0;
  filter: drop-shadow(0 0 8px rgba(199, 210, 254, 0.8));
}

.climax-text-wrap {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  text-align: left;
  min-width: 0;
}

.climax-text-wrap .btn-climax-text {
  font-size: 0.96rem;
  font-weight: 800;
  color: #fff;
  line-height: 1.2;
  letter-spacing: 0.3px;
}

.climax-text-wrap .btn-subtext {
  font-size: 0.75rem;
  color: #e0e7ff;
  opacity: 0.95;
  line-height: 1.2;
  margin-top: 2px;
}

.climax-modal-card {
  border-color: #8b5cf6;
  box-shadow: 0 0 55px rgba(139, 92, 246, 0.45);
}

/* Clinical Latency Benchmark Scale & Card in Results Modal */
.climax-benchmark-card {
  background: rgba(15, 23, 42, 0.85);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 16px;
  padding: 16px 20px;
  margin: 16px 0;
  text-align: left;
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.05);
}

.benchmark-header-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
}

.benchmark-label {
  font-size: 0.72rem;
  font-weight: 800;
  letter-spacing: 0.8px;
  color: #8b9bb4;
  text-transform: uppercase;
}

.benchmark-tier-badge {
  font-size: 0.78rem;
  font-weight: 800;
  padding: 4px 12px;
  border-radius: 9999px;
  letter-spacing: 0.3px;
  text-transform: uppercase;
  transition: all 0.2s ease;
}

.benchmark-tier-badge.tier-rapid {
  background: rgba(239, 68, 68, 0.18);
  border: 1px solid rgba(239, 68, 68, 0.6);
  color: #f87171;
  box-shadow: 0 0 14px rgba(239, 68, 68, 0.3);
}

.benchmark-tier-badge.tier-early {
  background: rgba(249, 115, 22, 0.18);
  border: 1px solid rgba(249, 115, 22, 0.6);
  color: #fb923c;
  box-shadow: 0 0 14px rgba(249, 115, 22, 0.3);
}

.benchmark-tier-badge.tier-functional {
  background: rgba(234, 179, 8, 0.18);
  border: 1px solid rgba(234, 179, 8, 0.6);
  color: #facc15;
  box-shadow: 0 0 14px rgba(234, 179, 8, 0.3);
}

.benchmark-tier-badge.tier-plateau {
  background: rgba(16, 185, 129, 0.18);
  border: 1px solid rgba(16, 185, 129, 0.6);
  color: #34d399;
  box-shadow: 0 0 14px rgba(16, 185, 129, 0.3);
}

.benchmark-tier-badge.tier-mastery {
  background: rgba(56, 189, 248, 0.18);
  border: 1px solid rgba(56, 189, 248, 0.6);
  color: #38bdf8;
  box-shadow: 0 0 14px rgba(56, 189, 248, 0.3);
}

.benchmark-tier-badge.tier-elite {
  background: rgba(168, 85, 247, 0.18);
  border: 1px solid rgba(168, 85, 247, 0.6);
  color: #c084fc;
  box-shadow: 0 0 14px rgba(168, 85, 247, 0.3);
}

.benchmark-status-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin: 8px 0 12px 0;
  flex-wrap: wrap;
  gap: 6px;
}

.benchmark-status-text {
  font-size: 0.92rem;
  font-weight: 700;
  color: #f8fafc;
}

.benchmark-gap-text {
  font-size: 0.78rem;
  color: #94a3b8;
}

.benchmark-scale-track {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 6px;
  margin-top: 4px;
}

.b-segment {
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 8px;
  padding: 8px 4px;
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 2px;
  transition: all 0.25s ease;
  position: relative;
}

.b-segment .b-seg-label {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.78rem;
  font-weight: 700;
  color: #8b9bb4;
}

.b-segment .b-seg-sub {
  font-size: 0.64rem;
  color: #64748b;
  font-weight: 600;
  text-transform: uppercase;
}

.b-segment.active {
  transform: translateY(-2px);
}

.b-segment.active.b-seg-1 {
  background: rgba(239, 68, 68, 0.22);
  border-color: #ef4444;
  box-shadow: 0 0 16px rgba(239, 68, 68, 0.4);
}
.b-segment.active.b-seg-1 .b-seg-label,
.b-segment.active.b-seg-1 .b-seg-sub {
  color: #fca5a5;
  font-weight: 800;
}

.b-segment.active.b-seg-2 {
  background: rgba(249, 115, 22, 0.22);
  border-color: #f97316;
  box-shadow: 0 0 16px rgba(249, 115, 22, 0.4);
}
.b-segment.active.b-seg-2 .b-seg-label,
.b-segment.active.b-seg-2 .b-seg-sub {
  color: #fdba74;
  font-weight: 800;
}

.b-segment.active.b-seg-3 {
  background: rgba(234, 179, 8, 0.22);
  border-color: #eab308;
  box-shadow: 0 0 16px rgba(234, 179, 8, 0.4);
}
.b-segment.active.b-seg-3 .b-seg-label,
.b-segment.active.b-seg-3 .b-seg-sub {
  color: #fde047;
  font-weight: 800;
}

.b-segment.active.b-seg-4 {
  background: rgba(16, 185, 129, 0.22);
  border-color: #10b981;
  box-shadow: 0 0 16px rgba(16, 185, 129, 0.4);
}
.b-segment.active.b-seg-4 .b-seg-label,
.b-segment.active.b-seg-4 .b-seg-sub {
  color: #6ee7b7;
  font-weight: 800;
}

.b-segment.active.b-seg-5 {
  background: rgba(56, 189, 248, 0.22);
  border-color: #38bdf8;
  box-shadow: 0 0 16px rgba(56, 189, 248, 0.4);
}
.b-segment.active.b-seg-5 .b-seg-label,
.b-segment.active.b-seg-5 .b-seg-sub {
  color: #7dd3fc;
  font-weight: 800;
}

.b-segment.active.b-seg-6 {
  background: rgba(168, 85, 247, 0.22);
  border-color: #a855f7;
  box-shadow: 0 0 16px rgba(168, 85, 247, 0.4);
}
.b-segment.active.b-seg-6 .b-seg-label,
.b-segment.active.b-seg-6 .b-seg-sub {
  color: #d8b4fe;
  font-weight: 800;
}

/* ==========================================================================
   CLINICAL PROGRESSION & EXTENSION PRESCRIPTIONS DECK
   ========================================================================== */

.progression-card {
  background: #0c1425;
  border: 1px solid #1e2e4a;
  border-radius: var(--radius-md);
  padding: 20px;
  display: flex;
  flex-direction: column;
  gap: 16px;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.4);
}

.progression-title {
  font-size: 1.05rem;
  font-weight: 800;
  color: #f8fafc;
}

.progression-sub {
  font-size: 0.78rem;
  color: #94a3b8;
  margin-top: 2px;
}

.badge-clinical {
  background: rgba(14, 165, 233, 0.15);
  border: 1px solid rgba(14, 165, 233, 0.4);
  color: #38bdf8;
  font-size: 0.78rem;
  font-weight: 800;
  padding: 4px 12px;
  border-radius: var(--radius-full);
}

.progression-metrics-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 12px;
}

.p-stat-card {
  background: #111a2e;
  border: 1px solid #1e2e4a;
  border-radius: var(--radius-sm);
  padding: 14px;
  display: flex;
  flex-direction: column;
  gap: 4px;
  transition: var(--transition);
}

.p-stat-card:hover {
  border-color: #38bdf8;
  transform: translateY(-1px);
}

.p-stat-label {
  font-size: 0.72rem;
  text-transform: uppercase;
  color: var(--text-dim);
  font-weight: 700;
  letter-spacing: 0.3px;
}

.p-stat-val {
  font-size: 1.45rem;
  font-weight: 800;
  color: #fff;
  line-height: 1.1;
}

.p-stat-sub {
  font-size: 0.72rem;
  color: #94a3b8;
  margin-top: 2px;
}

.prescription-box {
  background: linear-gradient(90deg, rgba(14, 165, 233, 0.12), rgba(16, 185, 129, 0.06));
  border-left: 4px solid #0ea5e9;
  border-radius: var(--radius-sm);
  padding: 16px 18px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.prescription-header {
  display: flex;
  gap: 12px;
  align-items: flex-start;
}

.prescription-icon {
  font-size: 1.8rem;
  line-height: 1;
}

.prescription-title {
  font-size: 0.95rem;
  font-weight: 800;
  color: #f8fafc;
  margin-bottom: 4px;
}

.prescription-desc {
  font-size: 0.84rem;
  color: #cbd5e1;
  line-height: 1.45;
}

.prescription-action-row {
  display: flex;
  justify-content: flex-end;
}

/* ==========================================================================
   SESSION STORAGE & INTERACTION TELEMETRY DECK
   ========================================================================== */

.telemetry-card {
  background: #090e1a;
  border: 1px solid #1e293b;
  border-radius: var(--radius-md);
  padding: 18px;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.telemetry-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 10px;
}

.telemetry-title {
  font-size: 0.95rem;
  font-weight: 800;
  color: #f8fafc;
}

.telemetry-sub {
  font-size: 0.78rem;
  color: #94a3b8;
  margin-top: 2px;
}

.code-pill {
  background: #1e293b;
  color: #38bdf8;
  padding: 2px 7px;
  border-radius: 4px;
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.78rem;
  border: 1px solid #334155;
}

.telemetry-actions {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.telemetry-feed-container {
  background: #050811;
  border: 1px solid #1e293b;
  border-radius: var(--radius-sm);
  padding: 12px;
  max-height: 240px;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.telemetry-feed-header {
  display: flex;
  justify-content: space-between;
  font-size: 0.76rem;
  font-weight: 700;
  color: #94a3b8;
  border-bottom: 1px solid #1e293b;
  padding-bottom: 6px;
}

.telemetry-feed-list {
  display: flex;
  flex-direction: column;
  gap: 6px;
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.76rem;
}

.telemetry-feed-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 6px 10px;
  background: #0c1425;
  border-radius: 4px;
  border: 1px solid #162238;
}

.telemetry-time {
  color: #94a3b8;
  font-weight: 700;
  min-width: 44px;
}

.telemetry-tag {
  padding: 2px 6px;
  border-radius: 3px;
  font-size: 0.68rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.3px;
}

.tag-arousal {
  background: rgba(245, 158, 11, 0.2);
  color: #fbbf24;
  border: 1px solid rgba(245, 158, 11, 0.3);
}

.tag-speed {
  background: rgba(14, 165, 233, 0.2);
  color: #38bdf8;
  border: 1px solid rgba(14, 165, 233, 0.3);
}

.tag-brake {
  background: rgba(239, 68, 68, 0.25);
  color: #f87171;
  border: 1px solid rgba(239, 68, 68, 0.4);
}

.tag-climax,
.tag-ejaculation {
  background: rgba(139, 92, 246, 0.25);
  color: #c4b5fd;
  border: 1px solid rgba(167, 139, 250, 0.45);
}

.tag-session {
  background: rgba(148, 163, 184, 0.2);
  color: #e2e8f0;
  border: 1px solid rgba(148, 163, 184, 0.3);
}

.telemetry-target {
  color: #f1f5f9;
  flex: 1;
}

.telemetry-state {
  color: #64748b;
  font-size: 0.72rem;
}

.telemetry-empty {
  font-size: 0.78rem;
  color: #64748b;
  text-align: center;
  padding: 12px 0;
  font-style: italic;
}

@media (max-width: 768px) {
  .progression-metrics-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

/* --- DYNAMIC SPEED TREND BANNER & NOTIFICATION SIGNS --- */
.speed-trend-banner {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  padding: 7px 20px;
  border-radius: 9999px;
  font-weight: 800;
  backdrop-filter: blur(12px);
  animation: speedBannerPulse 1.2s infinite alternate ease-in-out;
  box-shadow: 0 6px 24px rgba(0, 0, 0, 0.45);
  transition: opacity 0.25s ease, transform 0.25s ease;
  pointer-events: none;
  white-space: nowrap;
  max-width: 95%;
  box-sizing: border-box;
}

.speed-trend-banner.hidden {
  display: none !important;
}

@keyframes speedBannerPulse {
  0% { transform: scale(0.98); }
  100% { transform: scale(1.02); }
}

.speed-trend-banner.trend-up {
  background: linear-gradient(135deg, rgba(6, 182, 212, 0.95), rgba(14, 165, 233, 0.95));
  border: 1.5px solid #38bdf8;
  color: #ffffff;
  box-shadow: 0 0 25px rgba(56, 189, 248, 0.7);
}

.speed-trend-banner.trend-down {
  background: linear-gradient(135deg, rgba(16, 185, 129, 0.95), rgba(5, 150, 105, 0.95));
  border: 1.5px solid #34d399;
  color: #ffffff;
  box-shadow: 0 0 25px rgba(52, 211, 153, 0.6);
}

.speed-trend-banner.trend-warning {
  background: linear-gradient(135deg, rgba(245, 158, 11, 0.95), rgba(217, 119, 6, 0.95));
  border: 1.5px solid #fbbf24;
  color: #ffffff;
  box-shadow: 0 0 28px rgba(251, 191, 36, 0.7);
}

.speed-trend-banner.trend-max {
  background: linear-gradient(135deg, rgba(239, 68, 68, 0.95), rgba(220, 38, 38, 0.95));
  border: 1.5px solid #f87171;
  color: #ffffff;
  box-shadow: 0 0 35px rgba(239, 68, 68, 0.8);
}

.speed-trend-banner .trend-icon {
  font-size: 1.25rem;
  line-height: 1;
  animation: chevronBounce 0.8s infinite alternate ease-in-out;
  flex-shrink: 0;
}

@keyframes chevronBounce {
  0% { transform: translateY(0); }
  100% { transform: translateY(-3px); }
}

.trend-text-group {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  white-space: nowrap;
}

.speed-trend-banner .trend-main-text {
  font-size: 0.88rem;
  letter-spacing: 0.5px;
  text-transform: uppercase;
  font-weight: 800;
  white-space: nowrap;
}

.speed-trend-banner .trend-sub-text {
  font-size: 0.78rem;
  opacity: 0.95;
  background: rgba(0, 0, 0, 0.35);
  padding: 2px 8px;
  border-radius: 4px;
  border: 1px solid rgba(255, 255, 255, 0.2);
  white-space: nowrap;
  flex-shrink: 0;
}

.speed-trend-banner .trend-countdown-badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 26px;
  height: 26px;
  border-radius: 50%;
  background: #ffffff;
  color: #090d16;
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.92rem;
  font-weight: 900;
  line-height: 1;
  box-shadow: 0 0 14px rgba(255, 255, 255, 0.9);
  animation: countdownPop 0.35s cubic-bezier(0.175, 0.885, 0.32, 1.275);
  flex-shrink: 0;
}

.speed-trend-banner .trend-countdown-badge.pop {
  animation: countdownPop 0.35s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

@keyframes countdownPop {
  0% { transform: scale(0.5); opacity: 0.4; }
  60% { transform: scale(1.3); }
  100% { transform: scale(1); opacity: 1; }
}

/* Metric card trend pill */
.cadence-trend-pill {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  font-size: 0.72rem;
  font-weight: 800;
  padding: 3px 10px;
  border-radius: 9999px;
  margin-top: 5px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  transition: all 0.2s ease;
}

.cadence-trend-pill.trend-steady {
  background: rgba(148, 163, 184, 0.15);
  color: #94a3b8;
  border: 1px solid rgba(148, 163, 184, 0.3);
}

.cadence-trend-pill.trend-up {
  background: rgba(56, 189, 248, 0.25);
  color: #38bdf8;
  border: 1px solid #38bdf8;
  box-shadow: 0 0 10px rgba(56, 189, 248, 0.35);
}

.cadence-trend-pill.trend-down {
  background: rgba(52, 211, 153, 0.25);
  color: #34d399;
  border: 1px solid #34d399;
  box-shadow: 0 0 10px rgba(52, 211, 153, 0.35);
}

.cadence-trend-pill.trend-max {
  background: rgba(239, 68, 68, 0.3);
  color: #f87171;
  border: 1px solid #ef4444;
  box-shadow: 0 0 14px rgba(239, 68, 68, 0.45);
}

/* ==========================================================================
   MINIMALIST ZEN UI DESIGN SYSTEM (MATCHING PROTOTYPE IMAGE)
   Prototype Reference: minimalist_zen_ui_1789123165955.jpg
   1. Deep obsidian canvas (#0A0D14) & dark glassmorphic cards (rgba(16, 22, 34, 0.75), blur 16px)
   2. Minimal Status Ribbon at top: pill capsule with crisp typography
   3. Central Rhythm Ring: ~240px circular glowing orb, dynamic pulse animations, ambient canvas
   4. Tactile 1-10 Arousal Strip: horizontal pill strip with glowing segment highlights
   5. Ergonomic Action Buttons Dock: Primary Blue, Crimson Brake, Royal Violet Climax, Reset
   6. Expandable Zen Drawer: smooth accordion transition for Levels, Custom Tempo, Audio, Telemetry
   ========================================================================== */

:root {
  --zen-bg-obsidian: #0A0D14;
  --zen-card-bg: rgba(16, 22, 34, 0.75);
  --zen-card-border: 1px solid rgba(255, 255, 255, 0.08);
  --zen-card-blur: blur(16px);
  --zen-card-radius: 28px;
  --zen-card-shadow: 0 24px 64px -12px rgba(0, 0, 0, 0.75), inset 0 1px 0 rgba(255, 255, 255, 0.06);

  --zen-pill-bg: rgba(22, 30, 48, 0.65);
  --zen-pill-border: 1px solid rgba(255, 255, 255, 0.08);

  --zen-cyan-glow: 0 0 38px rgba(56, 189, 248, 0.35);
  --zen-red-glow: 0 0 32px rgba(239, 68, 68, 0.45);
  --zen-violet-glow: 0 0 28px rgba(124, 58, 237, 0.4);
  --zen-blue-glow: 0 0 28px rgba(59, 130, 246, 0.45);
}

/* 1. Deep Obsidian Background & Glassmorphic Container */
body.zen-mode,
.zen-layout-container {
  background-color: var(--zen-bg-obsidian) !important;
  background-image: radial-gradient(circle at 50% 18%, rgba(14, 165, 233, 0.04) 0%, transparent 65%) !important;
  color: #f8fafc;
  min-height: 100vh;
  margin: 0;
  padding: 14px 16px;
  box-sizing: border-box;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
}

/* Minimal unobtrusive Zen header */
.zen-mode .app-header {
  background: transparent !important;
  border: none !important;
  padding: 0 4px 4px 4px !important;
  box-shadow: none !important;
  width: 100% !important;
  margin-bottom: -8px !important;
}

.zen-mode .brand-logo {
  width: 32px !important;
  height: 32px !important;
  font-size: 0.9rem !important;
  border-radius: 8px !important;
  font-weight: 700 !important;
}

.zen-mode .brand-title {
  font-size: 1.05rem !important;
  font-weight: 700 !important;
}

.zen-mode .brand-subtitle,
.zen-mode .badge-privacy,
.zen-mode .app-footer {
  display: none !important;
}

.zen-mode .badge-clinical {
  font-size: 0.68rem !important;
  padding: 2px 8px !important;
}

.zen-card,
.zen-layout,
.app-container.zen-layout,
.zen-mode .main-card,
.zen-mode .app-container {
  background: var(--zen-card-bg) !important;
  border: var(--zen-card-border) !important;
  backdrop-filter: var(--zen-card-blur) !important;
  -webkit-backdrop-filter: var(--zen-card-blur) !important;
  border-radius: var(--zen-card-radius) !important;
  box-shadow: var(--zen-card-shadow) !important;
  padding: 20px 24px !important;
  position: relative;
  overflow: hidden;
  max-width: 800px;
  width: 100%;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
}

/* 2. Minimal Status Ribbon at Top */
.zen-status-ribbon,
.minimal-status-ribbon,
.zen-mode .metrics-grid {
  display: flex !important;
  align-items: center !important;
  justify-content: center !important;
  background: var(--zen-pill-bg) !important;
  border: var(--zen-pill-border) !important;
  backdrop-filter: blur(12px) !important;
  -webkit-backdrop-filter: blur(12px) !important;
  border-radius: 20px !important;
  padding: 8px 24px !important;
  width: auto !important;
  max-width: 520px !important;
  margin: 0 auto 2px auto !important;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.35) !important;
  gap: 0 !important;
}

/* Hide 4th metric card in status ribbon if present */
.zen-mode .metrics-grid .metric-card:nth-child(n+4) {
  display: none !important;
}

.ribbon-metric-card,
.minimal-status-ribbon .status-item,
.zen-mode .metric-card {
  background: transparent !important;
  border: none !important;
  padding: 2px 20px !important;
  text-align: center !important;
  position: relative !important;
  box-shadow: none !important;
  display: flex !important;
  flex-direction: column !important;
  align-items: center !important;
}

.minimal-status-ribbon .status-item:not(:last-child),
.zen-mode .metric-card:not(:nth-child(3)) {
  border-right: 1px solid rgba(255, 255, 255, 0.08) !important;
}

.ribbon-label,
.status-item .label,
.zen-mode .metric-label {
  font-size: 0.74rem !important;
  font-weight: 500 !important;
  color: #8b9bb4 !important;
  text-transform: none !important;
  letter-spacing: 0.2px !important;
  margin-bottom: 2px !important;
}

.ribbon-val,
.status-item .value,
.zen-mode .metric-value {
  font-family: 'JetBrains Mono', monospace !important;
  font-size: 1.55rem !important;
  font-weight: 700 !important;
  color: #ffffff !important;
  line-height: 1.2 !important;
}

.ribbon-separator {
  width: 1px !important;
  height: 34px !important;
  background: rgba(255, 255, 255, 0.1) !important;
}

/* 3. Central Rhythm Ring Visualizer & Smooth Ambient Canvas */
.zen-visualizer-deck,
.zen-mode .visualizer-wrapper {
  position: relative;
  width: 100%;
  min-height: 250px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  background: transparent !important;
  border: none !important;
  box-shadow: none !important;
  padding: 2px 0 !important;
  overflow: visible !important;
}

/* Dedicated Non-Colliding Top Notification Slot */
.visualizer-notification-zone,
.zen-mode .visualizer-notification-zone {
  width: 100%;
  min-height: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 0;
  z-index: 20;
  transition: min-height 0.2s ease, margin 0.2s ease;
}

.visualizer-notification-zone:has(.speed-trend-banner:not(.hidden)) {
  min-height: 38px;
  margin-bottom: 6px;
}

.zen-mode .speed-trend-banner {
  border-radius: 9999px !important;
  padding: 6px 20px !important;
  font-weight: 800;
  backdrop-filter: blur(14px);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.5) !important;
}

/* Smooth Minimalist Live Wave Chart Flowing Behind the Ring */
.canvas-ambient-container,
.ambient-wave-canvas,
.zen-mode .chart-container-card {
  position: absolute !important;
  top: 50% !important;
  left: 0 !important;
  transform: translateY(-50%) !important;
  width: 100% !important;
  height: 220px !important;
  pointer-events: none !important; /* Never blocks clicks on the ring or buttons */
  z-index: 1 !important;
  background: transparent !important;
  border: none !important;
  box-shadow: none !important;
  padding: 0 !important;
  display: flex !important;
  align-items: center !important;
  justify-content: center !important;
}

.zen-mode .chart-container-card .chart-header {
  display: none !important;
}

.zen-mode .chart-container-card .canvas-wrapper {
  background: transparent !important;
  border: none !important;
  height: 100% !important;
}

.canvas-ambient-container canvas,
.zen-mode .chart-container-card canvas {
  width: 100% !important;
  max-width: 840px !important;
  height: 220px !important;
  opacity: 0.38 !important;
  filter: drop-shadow(0 0 12px rgba(56, 189, 248, 0.35)) !important;
}

.rhythm-ring-stage {
  position: relative;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: center;
}

/* Central Glowing Orb / Rhythm Ring (~220px) */
.zen-rhythm-ring,
.rhythm-ring,
.zen-mode .pulse-center {
  position: relative !important;
  z-index: 10 !important;
  width: 220px !important;
  height: 220px !important;
  min-width: 220px !important;
  min-height: 220px !important;
  border-radius: 50% !important;
  background: radial-gradient(circle, rgba(14, 165, 233, 0.12) 0%, rgba(10, 15, 26, 0.92) 75%) !important;
  border: 3px solid rgba(56, 189, 248, 0.75) !important;
  box-shadow: 0 0 38px rgba(56, 189, 248, 0.35), inset 0 0 28px rgba(56, 189, 248, 0.14) !important;
  display: flex !important;
  flex-direction: column !important;
  align-items: center !important;
  justify-content: center !important;
  text-align: center !important;
  padding: 18px !important;
  box-sizing: border-box !important;
  animation: zenRingBreath 4s infinite ease-in-out;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  overflow: hidden !important;
}

.zen-ring-heart {
  font-size: 1.25rem !important;
  color: #f472b6 !important;
  filter: drop-shadow(0 0 8px rgba(244, 114, 182, 0.75)) !important;
  margin-bottom: 2px !important;
  user-select: none !important;
  line-height: 1 !important;
}

.zen-tempo-center {
  display: flex !important;
  flex-direction: column !important;
  align-items: center !important;
  justify-content: center !important;
  margin: 0 !important;
  padding: 0 !important;
}

.zen-ring-bpm,
.zen-mode .pulse-cue {
  font-family: 'JetBrains Mono', monospace !important;
  font-size: 2.35rem !important;
  font-weight: 800 !important;
  color: #ffffff !important;
  letter-spacing: -0.5px !important;
  line-height: 1 !important;
  margin: 0 !important;
  padding: 0 !important;
  display: flex !important;
  flex-direction: row !important;
  flex-wrap: wrap !important;
  align-items: baseline !important;
  justify-content: center !important;
  column-gap: 6px !important;
}

.zen-ring-bpm .unit {
  font-size: 1.15rem !important;
  font-weight: 700 !important;
  color: #ffffff !important;
}

.zen-ring-bpm .bps-sub {
  width: 100% !important;
  display: block !important;
  font-size: 0.8rem !important;
  color: #94a3b8 !important;
  font-weight: 500 !important;
  margin: 3px 0 0 0 !important;
  line-height: 1.1 !important;
  text-align: center !important;
  white-space: nowrap !important;
}

/* In Zen mode, hide steady pill to eliminate clutter & overlap */
.zen-mode .cadence-trend-pill.trend-steady,
.zen-mode #cadence-trend-pill.trend-steady {
  display: none !important;
}

/* Dynamic trend pill when speed actively changes */
.zen-mode .cadence-trend-pill,
.zen-mode #cadence-trend-pill {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-size: 0.65rem !important;
  font-weight: 700 !important;
  padding: 2px 8px !important;
  border-radius: 9999px !important;
  margin: 4px 0 0 0 !important;
  line-height: 1 !important;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.zen-ring-instruction,
.zen-mode .pulse-subcue {
  font-size: 0.74rem !important;
  font-weight: 500 !important;
  color: #94a3b8 !important;
  max-width: 165px !important;
  line-height: 1.25 !important;
  margin-top: 6px !important;
  text-align: center !important;
  overflow: hidden !important;
  display: -webkit-box !important;
  -webkit-line-clamp: 2 !important;
  -webkit-box-orient: vertical !important;
  text-overflow: ellipsis !important;
  word-break: break-word !important;
}

@keyframes zenRingBreath {
  0%, 100% {
    transform: scale(1);
    box-shadow: 0 0 35px rgba(56, 189, 248, 0.28), inset 0 0 24px rgba(56, 189, 248, 0.12);
  }
  50% {
    transform: scale(1.02);
    box-shadow: 0 0 48px rgba(56, 189, 248, 0.42), inset 0 0 32px rgba(56, 189, 248, 0.2);
  }
}

/* Dynamic Beat Pulse Aura */
.pulse-aura,
.zen-mode .pulse-aura {
  position: absolute !important;
  width: 240px !important;
  height: 240px !important;
  border-radius: 50% !important;
  background: radial-gradient(circle, rgba(56, 189, 248, 0.35) 0%, rgba(56, 189, 248, 0) 70%) !important;
  pointer-events: none !important;
  z-index: 5 !important;
  transform: scale(1);
  opacity: 0;
  transition: transform 0.08s ease-out, opacity 0.08s ease-out;
}

.pulse-aura.beat,
.zen-mode .pulse-aura.beat {
  transform: scale(1.35) !important;
  opacity: 1 !important;
}

/* Top Heart Icon inside Ring */
.pulse-phase-badge,
.zen-mode .pulse-phase-badge {
  background: transparent !important;
  border: none !important;
  padding: 0 !important;
  margin-bottom: 2px !important;
  font-size: 1.15rem !important;
  filter: drop-shadow(0 0 8px rgba(244, 63, 94, 0.6)) !important;
}

/* Dynamic Phase Themes on Ring */
.zen-mode .visualizer-wrapper.phase-slow .pulse-center {
  border-color: rgba(20, 184, 166, 0.75) !important;
  background: radial-gradient(circle, rgba(20, 184, 166, 0.15) 0%, rgba(12, 18, 30, 0.88) 75%) !important;
  box-shadow: 0 0 38px rgba(20, 184, 166, 0.35), inset 0 0 25px rgba(20, 184, 166, 0.15) !important;
}

.zen-mode .visualizer-wrapper.phase-fast .pulse-center {
  border-color: rgba(245, 158, 11, 0.85) !important;
  background: radial-gradient(circle, rgba(245, 158, 11, 0.18) 0%, rgba(12, 18, 30, 0.88) 75%) !important;
  box-shadow: 0 0 45px rgba(245, 158, 11, 0.45), inset 0 0 30px rgba(245, 158, 11, 0.2) !important;
}

.zen-mode .visualizer-wrapper.phase-stop .pulse-center {
  border-color: rgba(239, 68, 68, 0.9) !important;
  background: radial-gradient(circle, rgba(239, 68, 68, 0.22) 0%, rgba(12, 18, 30, 0.9) 75%) !important;
  box-shadow: 0 0 50px rgba(239, 68, 68, 0.6), inset 0 0 35px rgba(239, 68, 68, 0.25) !important;
  animation: zenStopAlarm 0.9s infinite alternate ease-in-out;
}

@keyframes zenStopAlarm {
  from { transform: scale(1); box-shadow: 0 0 35px rgba(239, 68, 68, 0.4); }
  to { transform: scale(1.04); box-shadow: 0 0 55px rgba(239, 68, 68, 0.8); }
}

/* 4. Tactile 1-10 Arousal Strip (Biofeedback Arousal Gauge) - Decluttered Minimalist Design */
.zen-arousal-dock,
.zen-arousal-container,
.zen-mode .arousal-section {
  background: transparent !important;
  border: none !important;
  padding: 0 !important;
  box-shadow: none !important;
  width: 100%;
  max-width: 480px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
}

.zen-mode .arousal-section .biofeedback-action-bar,
.zen-mode .arousal-section .arousal-bar-container,
.zen-mode .arousal-section .arousal-guidance {
  display: none !important; /* Managed via Zen Guidance Callout */
}

/* Zen Arousal Header Bar & Live Indicator */
.zen-arousal-header-bar {
  display: flex !important;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  box-sizing: border-box;
  padding: 0 6px;
  gap: 8px;
}

.zen-mode .zen-arousal-tag {
  display: none !important; /* Remove bulky tag box */
}

.zen-arousal-title-group {
  display: flex;
  align-items: center;
  gap: 8px;
  white-space: nowrap;
  flex-shrink: 0;
}

.zen-arousal-title {
  font-family: 'Inter', sans-serif;
  font-size: 0.76rem;
  font-weight: 600;
  color: #94a3b8;
  letter-spacing: 0.5px;
  text-transform: uppercase;
}

.zen-arousal-range-hint {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.70rem;
  color: #64748b;
  white-space: nowrap;
}

.zen-arousal-status-pill {
  white-space: nowrap;
  flex-shrink: 0;
}

.zen-arousal-status-pill .arousal-badge {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.72rem;
  font-weight: 700;
  padding: 3px 10px;
  border-radius: 9999px;
  letter-spacing: 0.2px;
  transition: all 0.2s ease;
  white-space: nowrap;
  display: inline-flex;
  align-items: center;
}

/* Horizontal Capsule Pill Track */
.zen-arousal-strip,
.zen-mode .arousal-tactile-strip {
  display: flex !important;
  align-items: center !important;
  justify-content: space-between !important;
  background: var(--zen-pill-bg) !important;
  border: var(--zen-pill-border) !important;
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-radius: 9999px !important;
  padding: 4px 6px !important;
  width: 100% !important;
  box-sizing: border-box;
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.35);
  gap: 2px !important;
}

/* Tactile Pill Buttons */
.zen-arousal-strip .arousal-tap-btn,
.zen-mode .arousal-tap-btn {
  width: 38px !important;
  height: 38px !important;
  min-height: 38px !important;
  border-radius: 50% !important;
  background: transparent !important;
  border: none !important;
  padding: 0 !important;
  display: flex !important;
  align-items: center !important;
  justify-content: center !important;
  cursor: pointer;
  user-select: none;
  touch-action: manipulation;
  transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  box-shadow: none !important;
}

.zen-mode .arousal-tap-btn .btn-lvl-sub {
  display: none !important;
}

.zen-mode .arousal-tap-btn .btn-lvl-num {
  font-family: 'JetBrains Mono', monospace !important;
  font-size: 0.92rem !important;
  font-weight: 500 !important;
  color: #7e8c9f !important;
  transition: color 0.15s ease;
}

/* Subtle zone color tint on inactive numbers for intuitive recognition */
.zen-mode .arousal-tap-btn.lvl-btn-1 .btn-lvl-num,
.zen-mode .arousal-tap-btn.lvl-btn-2 .btn-lvl-num,
.zen-mode .arousal-tap-btn.lvl-btn-3 .btn-lvl-num {
  color: #6ee7b7 !important;
  opacity: 0.75;
}

.zen-mode .arousal-tap-btn.lvl-btn-4 .btn-lvl-num,
.zen-mode .arousal-tap-btn.lvl-btn-5 .btn-lvl-num {
  color: #fde68a !important;
  opacity: 0.75;
}

.zen-mode .arousal-tap-btn.lvl-btn-6 .btn-lvl-num,
.zen-mode .arousal-tap-btn.lvl-btn-7 .btn-lvl-num {
  color: #fdba74 !important;
  opacity: 0.75;
}

.zen-mode .arousal-tap-btn.lvl-btn-8 .btn-lvl-num,
.zen-mode .arousal-tap-btn.lvl-btn-9 .btn-lvl-num,
.zen-mode .arousal-tap-btn.lvl-btn-10 .btn-lvl-num {
  color: #fca5a5 !important;
  opacity: 0.75;
}

.zen-mode .arousal-tap-btn:hover {
  background: rgba(255, 255, 255, 0.1) !important;
  transform: scale(1.08) !important;
}

.zen-mode .arousal-tap-btn:hover .btn-lvl-num {
  opacity: 1 !important;
}

/* Active Segment Pill Highlight */
.zen-mode .arousal-tap-btn.active {
  background: #475569 !important;
  background: linear-gradient(135deg, #64748b, #475569) !important;
  box-shadow: 0 0 16px rgba(255, 255, 255, 0.3), inset 0 1px 0 rgba(255, 255, 255, 0.3) !important;
  transform: scale(1.12) !important;
}

.zen-mode .arousal-tap-btn.active .btn-lvl-num {
  color: #ffffff !important;
  font-weight: 800 !important;
  opacity: 1 !important;
}

/* Tier Specific Glows when Active */
.zen-mode .arousal-tap-btn.lvl-btn-1.active,
.zen-mode .arousal-tap-btn.lvl-btn-2.active,
.zen-mode .arousal-tap-btn.lvl-btn-3.active {
  background: linear-gradient(135deg, #059669, #10b981) !important;
  box-shadow: 0 0 18px rgba(16, 185, 129, 0.55) !important;
}

.zen-mode .arousal-tap-btn.lvl-btn-4.active,
.zen-mode .arousal-tap-btn.lvl-btn-5.active {
  background: linear-gradient(135deg, #d97706, #f59e0b) !important;
  box-shadow: 0 0 18px rgba(245, 158, 11, 0.55) !important;
}

.zen-mode .arousal-tap-btn.lvl-btn-6.active,
.zen-mode .arousal-tap-btn.lvl-btn-7.active {
  background: linear-gradient(135deg, #ea580c, #f97316) !important;
  box-shadow: 0 0 18px rgba(249, 115, 22, 0.55) !important;
}

.zen-mode .arousal-tap-btn.lvl-btn-8.active,
.zen-mode .arousal-tap-btn.lvl-btn-9.active,
.zen-mode .arousal-tap-btn.lvl-btn-10.active {
  background: linear-gradient(135deg, #dc2626, #ef4444) !important;
  box-shadow: 0 0 22px rgba(239, 68, 68, 0.7) !important;
}

/* 4-Zone Progression Legend - Clean borderless dot legend */
.zen-arousal-zones-legend {
  display: flex !important;
  align-items: center;
  justify-content: center;
  width: 100%;
  gap: 16px;
  box-sizing: border-box;
  margin-top: 1px;
  background: transparent !important;
  border: none !important;
}

.zen-zone-pill {
  flex: 0 0 auto;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 5px;
  padding: 2px 4px;
  background: transparent !important;
  border: none !important;
  border-radius: 4px;
  box-shadow: none !important;
  font-family: 'Inter', sans-serif;
  font-size: 0.72rem;
  font-weight: 500;
  color: #64748b;
  transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  user-select: none;
  opacity: 0.55;
}

.zen-zone-pill .zone-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  flex-shrink: 0;
}

.zen-zone-pill .dot-calm { background: #10b981; }
.zen-zone-pill .dot-plateau { background: #f59e0b; }
.zen-zone-pill .dot-edge { background: #f97316; }
.zen-zone-pill .dot-brink { background: #ef4444; }

.zen-zone-pill.active {
  opacity: 1;
  font-weight: 700;
}

.zen-zone-pill.zone-calm.active {
  color: #34d399 !important;
  text-shadow: 0 0 10px rgba(52, 211, 153, 0.5);
}

.zen-zone-pill.zone-plateau.active {
  color: #fbbf24 !important;
  text-shadow: 0 0 10px rgba(251, 191, 36, 0.5);
}

.zen-zone-pill.zone-edge.active {
  color: #fb923c !important;
  text-shadow: 0 0 10px rgba(251, 146, 60, 0.5);
}

.zen-zone-pill.zone-brink.active {
  color: #f87171 !important;
  text-shadow: 0 0 10px rgba(248, 113, 113, 0.5);
}

/* Live Physiological Guidance Callout - Clean borderless micro-caption */
.zen-arousal-guidance-callout {
  display: flex !important;
  align-items: center;
  justify-content: center;
  gap: 6px;
  width: 100%;
  box-sizing: border-box;
  padding: 1px 8px;
  background: transparent !important;
  border: none !important;
  border-radius: 0;
  backdrop-filter: none !important;
  -webkit-backdrop-filter: none !important;
  box-shadow: none !important;
  text-align: center;
}

.zen-arousal-guidance-callout .guidance-icon {
  display: none !important; /* Remove yellow lightbulb emoji clutter */
}

.zen-arousal-guidance-callout .guidance-text {
  font-family: 'Inter', sans-serif;
  font-size: 0.76rem;
  color: #94a3b8;
  line-height: 1.35;
  text-align: center;
}

/* 5. Ergonomic Action Buttons Dock - Clean 2-Row Balanced Controller */
.zen-action-dock,
.zen-mode .primary-controls {
  display: flex !important;
  flex-direction: column !important;
  align-items: center !important;
  justify-content: center !important;
  gap: 8px !important;
  width: 100% !important;
  max-width: 480px !important;
  margin: 6px auto 0 auto !important;
  box-sizing: border-box !important;
}

.zen-mode .primary-controls .controls-row {
  display: flex !important;
  flex-direction: row !important;
  align-items: center !important;
  justify-content: center !important;
  gap: 10px !important;
  width: 100% !important;
}

.zen-mode .controls-row.main-actions {
  width: 100% !important;
}

.zen-mode .controls-row.secondary-actions {
  width: 100% !important;
}

/* Primary Blue Pill (Start) */
.zen-btn-start,
.zen-mode #btn-start-pause {
  background: linear-gradient(135deg, #2563eb, #3b82f6) !important;
  border: 1px solid rgba(147, 197, 253, 0.35) !important;
  border-radius: 9999px !important;
  color: #ffffff !important;
  font-weight: 700 !important;
  font-size: 0.90rem !important;
  padding: 10px 22px !important;
  box-shadow: 0 0 18px rgba(59, 130, 246, 0.4), inset 0 1px 0 rgba(255, 255, 255, 0.25) !important;
  cursor: pointer;
  transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  flex: 1 1 0 !important;
  min-height: 40px !important;
  box-sizing: border-box !important;
  white-space: nowrap !important;
  display: flex !important;
  align-items: center !important;
  justify-content: center !important;
  gap: 8px !important;
}

.zen-mode #btn-start-pause:hover {
  background: linear-gradient(135deg, #1d4ed8, #2563eb) !important;
  box-shadow: 0 0 28px rgba(59, 130, 246, 0.65) !important;
  transform: translateY(-1px);
}

/* Crimson Glowing Pill Paddle (Emergency Brake) */
.zen-btn-brake,
.zen-mode #btn-edge-trigger {
  background: rgba(225, 29, 72, 0.12) !important;
  border: 1.5px solid rgba(239, 68, 68, 0.85) !important;
  border-radius: 9999px !important;
  color: #f87171 !important;
  font-weight: 700 !important;
  font-size: 0.90rem !important;
  padding: 10px 20px !important;
  box-shadow: 0 0 18px rgba(239, 68, 68, 0.35), inset 0 0 12px rgba(239, 68, 68, 0.12) !important;
  cursor: pointer;
  transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  flex: 1.4 1 0 !important;
  min-height: 40px !important;
  min-width: 0 !important;
  box-sizing: border-box !important;
  white-space: nowrap !important;
  display: flex !important;
  align-items: center !important;
  justify-content: center !important;
}

.zen-mode #btn-edge-trigger .btn-subtext,
.zen-mode #btn-edge-trigger .edge-pulse-dot {
  display: none !important;
}

.zen-mode #btn-edge-trigger .btn-edge-text {
  font-size: 0.90rem !important;
  font-weight: 700 !important;
  letter-spacing: 0.2px;
  text-transform: none !important;
}

.zen-mode #btn-edge-trigger:not(:disabled):hover {
  background: rgba(225, 29, 72, 0.24) !important;
  border-color: #f87171 !important;
  color: #fecdd3 !important;
  box-shadow: 0 0 30px rgba(239, 68, 68, 0.6) !important;
  transform: translateY(-1px);
}

.zen-mode #btn-edge-trigger:disabled {
  opacity: 0.4 !important;
  cursor: not-allowed;
  box-shadow: none !important;
}

.zen-mode #btn-edge-trigger.btn-resume-mode {
  background: rgba(16, 185, 129, 0.16) !important;
  border-color: #34d399 !important;
  color: #34d399 !important;
  box-shadow: 0 0 24px rgba(16, 185, 129, 0.5) !important;
}

/* Royal Violet Pill (Ejaculated / Finished) - calm glass when idle, luminous on active */
.zen-btn-finished,
.zen-mode #btn-climax-end {
  background: rgba(124, 58, 237, 0.16) !important;
  border: 1.5px solid rgba(167, 139, 250, 0.38) !important;
  border-radius: 9999px !important;
  color: #e0e7ff !important;
  font-weight: 700 !important;
  font-size: 0.90rem !important;
  padding: 10px 20px !important;
  box-shadow: none !important;
  cursor: pointer;
  transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  display: inline-flex !important;
  align-items: center !important;
  justify-content: center !important;
  gap: 8px !important;
  flex: 1.8 1 0 !important;
  min-height: 40px !important;
  min-width: 0 !important;
  box-sizing: border-box !important;
  white-space: nowrap !important;
}

.zen-mode #btn-climax-end:hover,
body.session-active #btn-climax-end {
  background: linear-gradient(135deg, #6366f1, #7c3aed) !important;
  box-shadow: 0 0 20px rgba(124, 58, 237, 0.42) !important;
  color: #ffffff !important;
}

.zen-mode #btn-climax-end .btn-subtext {
  display: none !important;
}

.zen-mode #btn-climax-end .btn-climax-text {
  font-size: 0.90rem !important;
  font-weight: 700 !important;
  text-transform: capitalize !important;
  letter-spacing: 0.1px;
}

.zen-mode #btn-climax-end .climax-icon {
  order: 2 !important;
  font-size: 1.05rem;
}

/* Reset Button */
.zen-btn-reset,
.zen-mode #btn-reset-session {
  background: rgba(30, 41, 59, 0.6) !important;
  border: 1px solid rgba(255, 255, 255, 0.12) !important;
  border-radius: 9999px !important;
  color: #94a3b8 !important;
  font-weight: 600 !important;
  font-size: 0.88rem !important;
  padding: 10px 18px !important;
  box-shadow: none !important;
  cursor: pointer;
  transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  flex: 0 0 auto !important;
  min-height: 40px !important;
  min-width: 80px !important;
  box-sizing: border-box !important;
  white-space: nowrap !important;
  display: flex !important;
  align-items: center !important;
  justify-content: center !important;
}

.zen-mode #btn-reset-session:hover {
  background: rgba(51, 65, 85, 0.8) !important;
  color: #ffffff !important;
  border-color: rgba(255, 255, 255, 0.22) !important;
}

/* 6. Expandable Zen Drawer (Accordion & Subsections) */
.zen-drawer-toggle,
.btn-drawer-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  margin: 20px auto 0 auto;
  padding: 8px 24px;
  border-radius: 9999px;
  background: var(--zen-pill-bg);
  border: var(--zen-pill-border);
  color: #8b9bb4;
  font-size: 0.82rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.25s ease;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.3);
}

.zen-drawer-toggle:hover,
.btn-drawer-toggle:hover {
  background: rgba(255, 255, 255, 0.09);
  color: #ffffff;
}

.zen-drawer-toggle .drawer-icon,
.btn-drawer-toggle .drawer-arrow {
  font-size: 0.72rem;
  transition: transform 0.35s cubic-bezier(0.4, 0, 0.2, 1);
}

.zen-drawer-toggle.open .drawer-icon,
.btn-drawer-toggle[aria-expanded="true"] .drawer-arrow {
  transform: rotate(180deg);
}

/* Collapsible Panel with Smooth Accordion Slide-Down */
.zen-drawer,
.zen-drawer-container {
  width: 100%;
  max-height: 0;
  opacity: 0;
  overflow: hidden;
  transition: max-height 0.48s cubic-bezier(0.4, 0, 0.2, 1), opacity 0.38s ease, margin 0.3s ease;
  margin-top: 0;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.zen-drawer.open,
.zen-drawer-container.open {
  max-height: 4000px;
  opacity: 1;
  margin-top: 20px;
}

/* Clean Dark Tabs Inside Drawer */
.zen-drawer-tabs {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  padding-bottom: 14px;
  margin-bottom: 10px;
  overflow-x: auto;
}

.zen-drawer-tab-btn {
  background: rgba(20, 28, 44, 0.5);
  border: 1px solid rgba(255, 255, 255, 0.06);
  color: #8b9bb4;
  padding: 7px 18px;
  border-radius: 9999px;
  font-size: 0.8rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s ease;
  white-space: nowrap;
}

.zen-drawer-tab-btn:hover {
  background: rgba(255, 255, 255, 0.08);
  color: #ffffff;
}

.zen-drawer-tab-btn.active {
  background: rgba(14, 165, 233, 0.18);
  border-color: rgba(56, 189, 248, 0.8);
  color: #38bdf8;
  box-shadow: 0 0 14px rgba(56, 189, 248, 0.25);
}

/* Dark Sub-Cards within Drawer */
.zen-drawer .drawer-card,
.zen-mode .settings-card,
.zen-mode .history-card,
.zen-mode .progression-card,
.zen-mode .telemetry-card,
.zen-mode .guide-card,
.zen-mode .wave-sequencer-card,
.zen-mode .levels-selector-bar,
.zen-mode .tempo-control-panel {
  background: rgba(13, 19, 32, 0.75) !important;
  border: 1px solid rgba(255, 255, 255, 0.07) !important;
  border-radius: 20px !important;
  backdrop-filter: blur(12px) !important;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.4) !important;
}

/* ==========================================================================
   7. COMPREHENSIVE RESPONSIVE DESIGN SYSTEM (Multi-Tier Fluid Layout)
   ========================================================================== */

/* Base Zen Layout Adjustments */
body.zen-mode {
  padding: clamp(8px, 2.5vw, 24px) clamp(6px, 2vw, 16px) !important;
  overflow-x: hidden !important;
  display: flex !important;
  justify-content: center !important;
  align-items: flex-start !important;
  box-sizing: border-box !important;
}

.zen-layout,
.app-container.zen-layout,
.zen-mode .app-container {
  width: 100% !important;
  max-width: 900px !important;
  box-sizing: border-box !important;
  padding: clamp(14px, 3vw, 28px) clamp(10px, 2.5vw, 24px) !important;
  gap: clamp(10px, 2vw, 18px) !important;
  overflow-x: hidden !important;
}

/* Zen Header */
.zen-mode .app-header {
  width: 100% !important;
  box-sizing: border-box !important;
  display: flex !important;
  justify-content: space-between !important;
  align-items: center !important;
  gap: 8px !important;
  padding: 0 2px 2px 2px !important;
}

.zen-mode .header-brand {
  display: flex !important;
  align-items: center !important;
  gap: 10px !important;
  min-width: 0 !important;
  flex: 1 1 auto !important;
}

.zen-mode .brand-badge-row {
  display: flex !important;
  align-items: center !important;
  gap: 8px !important;
  min-width: 0 !important;
  flex-wrap: wrap !important;
}

.zen-mode .header-actions {
  display: flex !important;
  align-items: center !important;
  gap: 6px !important;
  flex-shrink: 0 !important;
}

/* Minimal Status Ribbon */
.zen-status-ribbon,
.minimal-status-ribbon,
.zen-mode .metrics-grid {
  width: 100% !important;
  max-width: 480px !important;
  margin: 0 auto !important;
  box-sizing: border-box !important;
  padding: 8px 16px !important;
  border-radius: 18px !important;
}

.ribbon-metric-card,
.minimal-status-ribbon .status-item,
.zen-mode .metric-card {
  flex: 1 1 0 !important;
  min-width: 0 !important;
  padding: 2px 8px !important;
}

.ribbon-val,
.status-item .value,
.zen-mode .metric-value {
  font-size: clamp(1.15rem, 3.5vw, 1.55rem) !important;
}

.ribbon-label,
.status-item .label,
.zen-mode .metric-label {
  font-size: clamp(0.65rem, 1.8vw, 0.74rem) !important;
  white-space: nowrap !important;
}

/* Central Rhythm Ring */
.zen-rhythm-ring,
.rhythm-ring,
.zen-mode .pulse-center {
  width: clamp(165px, 28vw, 230px) !important;
  height: clamp(165px, 28vw, 230px) !important;
  min-width: clamp(165px, 28vw, 230px) !important;
  min-height: clamp(165px, 28vw, 230px) !important;
  padding: clamp(10px, 2vw, 16px) !important;
}

.zen-ring-bpm,
.zen-mode .pulse-cue {
  font-size: clamp(1.65rem, 4.5vw, 2.25rem) !important;
}

.zen-ring-bpm .unit {
  font-size: clamp(0.95rem, 2.5vw, 1.25rem) !important;
}

.zen-ring-bpm .bps-sub {
  font-size: clamp(0.72rem, 1.8vw, 0.86rem) !important;
}

.zen-ring-instruction,
.zen-mode .pulse-subcue {
  font-size: clamp(0.68rem, 1.6vw, 0.78rem) !important;
  max-width: clamp(130px, 22vw, 180px) !important;
}

/* Ambient canvas behind ring */
.canvas-ambient-container canvas,
.zen-mode .chart-container-card canvas {
  max-width: 100% !important;
  height: clamp(140px, 24vw, 220px) !important;
}

/* Tactile 1-10 Arousal Strip */
.zen-arousal-dock,
.zen-arousal-container,
.zen-mode .arousal-section {
  width: 100% !important;
  max-width: 500px !important;
  margin: 2px auto !important;
  display: flex !important;
  justify-content: center !important;
  box-sizing: border-box !important;
}

.zen-arousal-strip,
.zen-mode .arousal-tactile-strip {
  width: 100% !important;
  max-width: 500px !important;
  box-sizing: border-box !important;
  display: flex !important;
  align-items: center !important;
  justify-content: space-between !important;
  padding: 4px 8px !important;
  gap: 4px !important;
}

@media (min-width: 521px) {
  .zen-arousal-strip .arousal-tap-btn,
  .zen-mode .arousal-tap-btn {
    width: 38px !important;
    height: 38px !important;
    min-height: 38px !important;
    flex: 0 0 38px !important;
  }
}

@media (max-width: 520px) {
  .zen-arousal-dock,
  .zen-arousal-container,
  .zen-mode .arousal-section {
    width: 100% !important;
    max-width: 100% !important;
  }

  .zen-arousal-strip,
  .zen-mode .arousal-tactile-strip {
    width: 100% !important;
    padding: 3px 4px !important;
    gap: 2px !important;
  }

  .zen-arousal-strip .arousal-tap-btn,
  .zen-mode .arousal-tap-btn {
    flex: 1 1 0 !important;
    min-width: 0 !important;
    max-width: 32px !important;
    height: 30px !important;
    min-height: 30px !important;
    width: auto !important;
  }

  .zen-mode .arousal-tap-btn .btn-lvl-num {
    font-size: 0.78rem !important;
  }

  .zen-arousal-range-hint {
    display: none !important;
  }

  .zen-arousal-tag {
    font-size: 0.58rem !important;
    padding: 1px 4px !important;
  }

  .zen-arousal-title {
    font-size: 0.76rem !important;
  }

  .zen-arousal-status-pill .arousal-badge {
    font-size: 0.68rem !important;
    padding: 2px 7px !important;
  }

  .zen-arousal-zones-legend {
    gap: 3px !important;
  }

  .zen-zone-pill {
    padding: 3px 3px !important;
    font-size: 0.62rem !important;
    gap: 3px !important;
  }

  .zen-zone-pill .zone-dot {
    width: 5px !important;
    height: 5px !important;
  }

  .zen-arousal-guidance-callout {
    padding: 4px 8px !important;
    gap: 6px !important;
  }

  .zen-arousal-guidance-callout .guidance-icon {
    font-size: 0.75rem !important;
  }

  .zen-arousal-guidance-callout .guidance-text {
    font-size: 0.72rem !important;
    line-height: 1.25 !important;
  }
}

/* ==========================================================================
   PRIMARY ACTION DOCK (Fluid 1-Row Desktop / 2-Row Balanced Mobile & Tablet)
   ========================================================================== */

.zen-action-dock,
.zen-mode .primary-controls {
  width: 100% !important;
  max-width: 840px !important;
  margin: 6px auto !important;
  box-sizing: border-box !important;
}

/* Desktop Wide (> 860px): Seamless 1-Row Ergonomic Dock */
@media (min-width: 861px) {
  .zen-action-dock,
  .zen-mode .primary-controls {
    display: flex !important;
    flex-direction: row !important;
    align-items: center !important;
    justify-content: center !important;
    gap: 10px !important;
    flex-wrap: nowrap !important;
  }

  .zen-mode .primary-controls .controls-row {
    display: contents !important;
  }

  .zen-mode #btn-start-pause {
    padding: 12px 24px !important;
    font-size: 0.92rem !important;
    flex: 0 1 auto !important;
    white-space: nowrap !important;
  }

  .zen-mode #btn-edge-trigger {
    padding: 12px 22px !important;
    font-size: 0.92rem !important;
    flex: 0 1 auto !important;
    white-space: nowrap !important;
  }

  .zen-mode #btn-climax-end {
    padding: 12px 20px !important;
    font-size: 0.92rem !important;
    flex: 0 1 auto !important;
    white-space: nowrap !important;
  }

  .zen-mode #btn-reset-session {
    padding: 12px 18px !important;
    font-size: 0.86rem !important;
    flex: 0 0 auto !important;
    white-space: nowrap !important;
  }
}

/* Tablet / Laptop / Mobile (<= 860px): Balanced 2-Row Ergonomic Grid */
@media (max-width: 860px) {
  .zen-action-dock,
  .zen-mode .primary-controls {
    display: flex !important;
    flex-direction: column !important;
    align-items: center !important;
    justify-content: center !important;
    gap: 10px !important;
    max-width: 580px !important;
  }

  .zen-mode .primary-controls .controls-row {
    display: flex !important;
    flex-direction: row !important;
    align-items: center !important;
    justify-content: center !important;
    gap: 10px !important;
    width: 100% !important;
  }

  /* Row 1: Start & Emergency Brake */
  .zen-mode .main-actions #btn-start-pause {
    flex: 1 1 0 !important;
    padding: 12px 16px !important;
    font-size: 0.9rem !important;
    justify-content: center !important;
    white-space: nowrap !important;
  }

  .zen-mode .main-actions #btn-edge-trigger {
    flex: 1.35 1 0 !important;
    padding: 12px 16px !important;
    font-size: 0.9rem !important;
    justify-content: center !important;
    white-space: nowrap !important;
  }

  /* Row 2: Ejaculated / Finished & Reset */
  .zen-mode .secondary-actions #btn-climax-end {
    flex: 1.6 1 0 !important;
    padding: 12px 18px !important;
    font-size: 0.9rem !important;
    justify-content: center !important;
    white-space: nowrap !important;
  }

  .zen-mode .secondary-actions #btn-reset-session {
    flex: 0.8 1 0 !important;
    padding: 12px 16px !important;
    font-size: 0.86rem !important;
    justify-content: center !important;
    white-space: nowrap !important;
  }
}

/* Small Mobile & Phablet (<= 600px): Ultra-Compact Ergonomic Mobile Adjustments */
@media (max-width: 600px) {
  body.zen-mode {
    padding: 8px 6px !important;
    min-height: 100vh !important;
    min-height: 100dvh !important;
    display: flex !important;
    align-items: center !important;
    justify-content: center !important;
    overflow-x: hidden !important;
    box-sizing: border-box !important;
  }

  .zen-layout,
  .app-container.zen-layout,
  .zen-mode .app-container {
    padding: 14px 10px !important;
    border-radius: 20px !important;
    gap: 8px !important;
    width: 100% !important;
    max-width: 440px !important;
    box-sizing: border-box !important;
    overflow-x: hidden !important;
  }

  .zen-mode .app-header {
    flex-wrap: nowrap !important;
    gap: 6px !important;
    width: 100% !important;
    box-sizing: border-box !important;
    padding: 0 2px 2px 2px !important;
  }

  .zen-mode .header-brand {
    gap: 6px !important;
    min-width: 0 !important;
    flex: 1 1 auto !important;
    overflow: hidden !important;
  }

  .zen-mode .brand-badge-row {
    flex-wrap: nowrap !important;
    gap: 4px !important;
    min-width: 0 !important;
  }

  .zen-mode .brand-title {
    font-size: 0.92rem !important;
    white-space: nowrap !important;
  }

  .zen-mode .brand-logo {
    width: 26px !important;
    height: 26px !important;
    min-width: 26px !important;
    font-size: 0.75rem !important;
  }

  .zen-mode .badge-clinical {
    font-size: 0.58rem !important;
    padding: 1px 5px !important;
    white-space: nowrap !important;
  }

  .zen-mode .header-actions {
    gap: 4px !important;
    flex-shrink: 0 !important;
  }

  .zen-mode .header-actions .btn-subtle {
    padding: 6px 8px !important;
    font-size: 0.75rem !important;
    height: 32px !important;
    min-width: 32px !important;
    box-sizing: border-box !important;
    border-radius: 10px !important;
  }

  /* Collapsible discrete text on mobile so header NEVER overflows */
  #btn-discrete .btn-text {
    display: none !important;
  }

  #btn-discrete {
    padding: 6px 8px !important;
    min-width: 32px !important;
  }

  #btn-mute {
    padding: 6px 8px !important;
    min-width: 32px !important;
  }

  /* Status Ribbon on Mobile */
  .zen-status-ribbon,
  .minimal-status-ribbon,
  .zen-mode .metrics-grid {
    display: flex !important;
    width: 100% !important;
    max-width: 360px !important;
    padding: 6px 8px !important;
    border-radius: 16px !important;
    box-sizing: border-box !important;
    justify-content: space-around !important;
  }

  .ribbon-metric-card,
  .minimal-status-ribbon .status-item,
  .zen-mode .metric-card {
    padding: 2px 6px !important;
  }

  .ribbon-val,
  .status-item .value,
  .zen-mode .metric-value {
    font-size: 1.15rem !important;
    font-weight: 800 !important;
  }

  .ribbon-label,
  .status-item .label,
  .zen-mode .metric-label {
    font-size: 0.6rem !important;
    white-space: nowrap !important;
    letter-spacing: 0px !important;
  }

  /* Rhythm Ring on Mobile */
  .zen-rhythm-ring,
  .rhythm-ring,
  .zen-mode .pulse-center {
    width: 175px !important;
    height: 175px !important;
    min-width: 175px !important;
    min-height: 175px !important;
    padding: 12px !important;
    box-sizing: border-box !important;
  }

  .zen-ring-heart {
    font-size: 1.15rem !important;
    margin-bottom: 2px !important;
    line-height: 1 !important;
  }

  .zen-ring-bpm,
  .zen-mode .pulse-cue {
    font-size: 1.85rem !important;
    line-height: 1 !important;
  }

  .zen-ring-bpm .unit {
    font-size: 0.95rem !important;
  }

  .zen-ring-bpm .bps-sub {
    font-size: 0.74rem !important;
    margin: 2px 0 0 0 !important;
    line-height: 1.1 !important;
    white-space: nowrap !important;
  }

  .zen-ring-instruction,
  .zen-mode .pulse-subcue {
    font-size: 0.68rem !important;
    max-width: 140px !important;
    line-height: 1.2 !important;
    margin-top: 4px !important;
  }

  /* Arousal Dock & Tap Buttons on Mobile */
  .zen-arousal-dock,
  .zen-arousal-section,
  .zen-mode .arousal-section {
    width: 100% !important;
    max-width: 100% !important;
    box-sizing: border-box !important;
  }

  .zen-arousal-header-bar {
    display: flex !important;
    justify-content: space-between !important;
    align-items: center !important;
    width: 100% !important;
    box-sizing: border-box !important;
    margin-bottom: 3px !important;
  }

  .zen-arousal-title-group {
    display: flex !important;
    align-items: center !important;
    gap: 4px !important;
  }

  .zen-arousal-tag {
    font-size: 0.56rem !important;
    padding: 1px 5px !important;
  }

  .zen-arousal-title {
    font-size: 0.76rem !important;
    font-weight: 700 !important;
  }

  .zen-arousal-range-hint {
    display: none !important;
  }

  .zen-arousal-status-pill .arousal-badge,
  #arousal-val-badge {
    font-size: 0.68rem !important;
    padding: 2px 6px !important;
    white-space: nowrap !important;
  }

  .arousal-tactile-strip,
  .zen-tactile-strip,
  .zen-mode .arousal-tactile-strip {
    display: flex !important;
    width: 100% !important;
    box-sizing: border-box !important;
    justify-content: space-between !important;
    padding: 3px 4px !important;
    gap: 2px !important;
    border-radius: 9999px !important;
  }

  .arousal-tactile-strip .arousal-tap-btn,
  .zen-tactile-strip .arousal-tap-btn,
  .zen-mode .arousal-tap-btn {
    flex: 1 1 0 !important;
    min-width: 0 !important;
    max-width: 33px !important;
    height: 33px !important;
    min-height: 33px !important;
    border-radius: 50% !important;
    padding: 0 !important;
    display: flex !important;
    align-items: center !important;
    justify-content: center !important;
    touch-action: manipulation !important;
    -webkit-tap-highlight-color: transparent !important;
  }

  .zen-mode .arousal-tap-btn .btn-lvl-num {
    font-size: 0.82rem !important;
    font-weight: 600 !important;
  }

  .zen-arousal-dock .zen-zone-legend {
    font-size: 0.62rem !important;
    gap: 6px !important;
    margin-top: 4px !important;
    flex-wrap: wrap !important;
    justify-content: center !important;
  }

  .zen-arousal-dock .arousal-guidance-text,
  #arousal-guidance-text {
    font-size: 0.68rem !important;
    line-height: 1.25 !important;
    max-width: 350px !important;
    margin: 3px auto 0 auto !important;
    text-align: center !important;
  }

  /* Ergonomic Touch Action Dock on Mobile */
  .zen-mode .primary-controls {
    width: 100% !important;
    box-sizing: border-box !important;
    gap: 8px !important;
  }

  .zen-mode .primary-controls .controls-row {
    width: 100% !important;
    box-sizing: border-box !important;
    gap: 8px !important;
  }

  .zen-mode .main-actions #btn-start-pause {
    padding: 12px 10px !important;
    font-size: 0.9rem !important;
    font-weight: 700 !important;
    min-height: 48px !important;
    border-radius: 9999px !important;
    flex: 1 1 0 !important;
    min-width: 0 !important;
    justify-content: center !important;
    touch-action: manipulation !important;
  }

  .zen-mode .main-actions #btn-edge-trigger {
    padding: 12px 10px !important;
    font-size: 0.86rem !important;
    font-weight: 700 !important;
    min-height: 48px !important;
    border-radius: 9999px !important;
    flex: 1.3 1 0 !important;
    min-width: 0 !important;
    justify-content: center !important;
    white-space: nowrap !important;
    touch-action: manipulation !important;
  }

  .zen-mode .secondary-actions #btn-climax-end {
    padding: 11px 10px !important;
    font-size: 0.82rem !important;
    font-weight: 700 !important;
    min-height: 44px !important;
    border-radius: 9999px !important;
    flex: 1.5 1 0 !important;
    min-width: 0 !important;
    justify-content: center !important;
    white-space: nowrap !important;
    gap: 4px !important;
    touch-action: manipulation !important;
  }

  .zen-mode .secondary-actions #btn-climax-end .climax-icon {
    width: 20px !important;
    height: 20px !important;
    font-size: 0.72rem !important;
  }

  .zen-mode .secondary-actions #btn-reset-session {
    padding: 11px 10px !important;
    font-size: 0.82rem !important;
    font-weight: 600 !important;
    min-height: 44px !important;
    border-radius: 9999px !important;
    flex: 0.7 1 0 !important;
    min-width: 0 !important;
    justify-content: center !important;
    touch-action: manipulation !important;
  }

  /* Drawer Mobile Safety */
  .zen-drawer,
  .zen-drawer-container,
  .drawer-card,
  .settings-grid,
  .setting-item,
  .custom-select,
  .custom-slider,
  .zen-drawer-tabs {
    max-width: 100% !important;
    box-sizing: border-box !important;
  }

  .zen-drawer .drawer-card {
    padding: 14px 10px !important;
    border-radius: 14px !important;
  }

  .zen-drawer-tab-btn {
    padding: 6px 12px !important;
    font-size: 0.72rem !important;
  }
}

/* Viewports with Short Heights (e.g. Laptops with toolbars or phones in landscape) */
@media (max-height: 720px) {
  body.zen-mode {
    padding: 6px 10px !important;
  }

  .zen-layout,
  .app-container.zen-layout,
  .zen-mode .app-container {
    gap: 8px !important;
    padding: 12px 18px !important;
  }

  .zen-visualizer-deck,
  .zen-mode .visualizer-wrapper {
    min-height: 180px !important;
    padding: 4px 0 !important;
  }

  .zen-rhythm-ring,
  .rhythm-ring,
  .zen-mode .pulse-center {
    width: 165px !important;
    height: 165px !important;
    min-width: 165px !important;
    min-height: 165px !important;
  }

  .zen-ring-bpm,
  .zen-mode .pulse-cue {
    font-size: 1.65rem !important;
  }

  .zen-ring-instruction,
  .zen-mode .pulse-subcue {
    display: none !important; /* Hide secondary text in tight vertical space to keep buttons visible */
  }

  .zen-drawer-toggle,
  .btn-drawer-toggle {
    margin-top: 6px !important;
    padding: 6px 18px !important;
  }
}

/* Responsive Drawer Grid & Tabs */
.zen-drawer-tabs {
  width: 100% !important;
  display: flex !important;
  gap: 6px !important;
  overflow-x: auto !important;
  -webkit-overflow-scrolling: touch !important;
  scrollbar-width: none !important;
  padding-bottom: 8px !important;
  box-sizing: border-box !important;
}

.zen-drawer-tabs::-webkit-scrollbar {
  display: none;
}

@media (max-width: 768px) {
  .settings-grid {
    grid-template-columns: 1fr !important;
  }

  .levels-grid {
    grid-template-columns: repeat(2, 1fr) !important;
  }

  .progression-metrics-grid {
    grid-template-columns: repeat(2, 1fr) !important;
  }
}

@media (max-width: 480px) {
  .levels-grid {
    grid-template-columns: 1fr !important;
  }

  .progression-metrics-grid {
    grid-template-columns: 1fr !important;
  }
}

/* Responsive Modal Dialogs */
.modal-overlay {
  padding: 12px !important;
  box-sizing: border-box !important;
}

.modal-card,
.climax-modal-card {
  width: 100% !important;
  max-width: 580px !important;
  max-height: 90vh !important;
  max-height: 90dvh !important;
  overflow-y: auto !important;
  box-sizing: border-box !important;
}

@media (max-width: 560px) {
  .modal-card,
  .climax-modal-card {
    padding: 18px 14px !important;
    border-radius: 16px !important;
  }

  .modal-stats-grid {
    grid-template-columns: repeat(2, 1fr) !important;
    gap: 8px !important;
  }

  .climax-benchmark-card {
    padding: 12px 10px !important;
  }

  .benchmark-scale-track {
    grid-template-columns: repeat(3, 1fr) !important;
    gap: 6px !important;
  }

  .modal-actions {
    flex-direction: column !important;
    width: 100% !important;
  }

  .modal-actions .btn {
    width: 100% !important;
    justify-content: center !important;
  }
}