/* CalmMind — design tokens + layout (Inter, restrained motion) */
:root {
  color-scheme: dark;
  --bg-color: #0f111a;
  --card-bg-color: #1a1d2e;
  --primary-gradient: linear-gradient(135deg, #7c3aed, #4c1d95);
  --secondary-gradient: linear-gradient(135deg, #f472b6, #c084fc);
  --accent-color-1: #8b5cf6;
  --accent-color-2: #22d3ee;
  --color-accent-primary: #8b5cf6;
  --text-primary: #f1f5f9;
  --text-secondary: #94a3b8;
  --muted-foreground: #94a3b8;
  --border-color: rgba(255, 255, 255, 0.08);
  --shadow-color: rgba(0, 0, 0, 0.35);
  --shadow-card: 0 4px 24px rgba(0, 0, 0, 0.25);
  --font-family: "Inter", system-ui, -apple-system, sans-serif;
  --border-radius-lg: 16px;
  --border-radius-md: 10px;
  --border-radius-sm: 8px;
  --radius-input: 10px;
  --transition-speed: 0.2s ease;
  --focus-ring: 0 0 0 3px rgba(139, 92, 246, 0.35);
  --space-section: 1.25rem;
}

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

body {
  font-family: var(--font-family);
  background-color: var(--bg-color);
  color: var(--text-primary);
  line-height: 1.55;
  display: flex;
  justify-content: center;
  align-items: flex-start;
  min-height: 100vh;
  padding: 1.5rem 1.25rem 2rem;
}

#app {
  background-color: transparent;
  width: 100%;
  max-width: min(28rem, 100%);
  display: flex;
  flex-direction: column;
  gap: var(--space-section);
}

.app-header {
  text-align: center;
  margin-bottom: 0.25rem;
}

.app-logo {
  max-width: 72px;
  height: auto;
  margin-bottom: 0.5rem;
  display: block;
  margin-left: auto;
  margin-right: auto;
}

.app-header h1 {
  font-size: clamp(1.75rem, 5vw, 2.1rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: 0.25rem;
  color: var(--text-primary);
}

.tagline {
  font-size: 0.95rem;
  color: var(--text-secondary);
  font-weight: 400;
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.panel-title {
  font-size: 1.125rem;
  font-weight: 600;
  letter-spacing: -0.01em;
  margin-bottom: 0.75rem;
  color: var(--text-primary);
}

.section-label {
  font-size: 0.7rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--muted-foreground);
  margin: 1rem 0 0.35rem;
}

.section-label:first-of-type {
  margin-top: 0;
}

.field-hint {
  font-size: 0.8125rem;
  line-height: 1.45;
  color: var(--text-secondary);
  margin-top: 0.5rem;
}

.glass-section {
  background-color: var(--card-bg-color);
  border-radius: var(--border-radius-lg);
  padding: 1.25rem 1.35rem;
  box-shadow: var(--shadow-card);
  border: 1px solid var(--border-color);
  transition: box-shadow var(--transition-speed), border-color var(--transition-speed);
}

@media (hover: hover) and (pointer: fine) {
  .glass-section:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
    border-color: rgba(255, 255, 255, 0.12);
  }
}

@media (hover: none), (pointer: coarse) {
  .glass-section:hover {
    transform: none;
  }
}

@media (prefers-reduced-motion: reduce) {
  .glass-section,
  .glass-section:hover {
    transition: none;
    transform: none !important;
  }
}

h1,
h2 {
  color: var(--text-primary);
  font-weight: 600;
  background: none;
  -webkit-background-clip: unset;
  background-clip: unset;
}

h1 {
  font-size: 1.75rem;
  text-align: center;
}

label {
  display: block;
  margin-bottom: 0.4rem;
  font-weight: 500;
  color: var(--text-secondary);
  font-size: 0.875rem;
}

.form-group {
  margin-bottom: 0.95rem;
}

select,
input[type="number"] {
  width: 100%;
  padding: 0.65rem 0.85rem;
  min-height: 2.75rem;
  background-color: var(--bg-color);
  color: var(--text-primary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-input);
  outline: none;
  font-family: inherit;
  font-size: 0.9rem;
  transition: border-color var(--transition-speed), box-shadow var(--transition-speed);
}

select {
  cursor: pointer;
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='20' height='20' viewBox='0 0 24 24' fill='none' stroke='%2394a3b8' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 0.75rem center;
  background-size: 1rem;
  padding-right: 2.25rem;
}

input[type="number"] {
  -moz-appearance: textfield;
  appearance: textfield;
}

input[type="number"]::-webkit-outer-spin-button,
input[type="number"]::-webkit-inner-spin-button {
  -webkit-appearance: none;
  margin: 0;
}

select:focus-visible,
input[type="number"]:focus-visible {
  border-color: var(--accent-color-1);
  box-shadow: var(--focus-ring);
}

input[type="range"] {
  -webkit-appearance: none;
  appearance: none;
  width: 100%;
  height: 6px;
  background: rgba(255, 255, 255, 0.08);
  border-radius: 3px;
  outline: none;
  margin: 0.65rem 0;
}

input[type="range"]:focus-visible {
  box-shadow: var(--focus-ring);
  border-radius: 4px;
}

input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 18px;
  height: 18px;
  background: var(--accent-color-1);
  border-radius: 50%;
  cursor: pointer;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.35);
  transition: background var(--transition-speed);
}

input[type="range"]::-webkit-slider-runnable-track {
  height: 6px;
  background: rgba(255, 255, 255, 0.08);
  border-radius: 3px;
}

input[type="range"]:hover::-webkit-slider-thumb {
  background: var(--accent-color-2);
}

input[type="range"]::-moz-range-thumb {
  width: 18px;
  height: 18px;
  background: var(--accent-color-1);
  border-radius: 50%;
  cursor: pointer;
  border: none;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.35);
}

input[type="range"]::-moz-range-track {
  height: 6px;
  background: rgba(255, 255, 255, 0.08);
  border-radius: 3px;
}

input[type="range"]:hover::-moz-range-thumb {
  background: var(--accent-color-2);
}

.stress-display {
  display: inline-block;
  margin-top: 0.35rem;
  font-weight: 600;
  font-size: 1rem;
  color: var(--text-primary);
}

.range-container {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.range-value {
  font-weight: 600;
  color: var(--text-primary);
  min-width: 2em;
  text-align: right;
}

.playback-block {
  margin-top: 0.5rem;
  padding-top: 1rem;
  border-top: 1px solid var(--border-color);
}

.btn {
  font-family: inherit;
  font-size: 0.9375rem;
  font-weight: 600;
  border-radius: var(--border-radius-md);
  cursor: pointer;
  transition: background var(--transition-speed), color var(--transition-speed),
    border-color var(--transition-speed), box-shadow var(--transition-speed), transform var(--transition-speed);
}

.btn:focus-visible {
  outline: none;
  box-shadow: var(--focus-ring);
}

.btn--primary {
  width: 100%;
  margin: 0.35rem 0 0.75rem;
  padding: 0.75rem 1.25rem;
  color: #fff;
  border: none;
  background: var(--primary-gradient);
  box-shadow: 0 4px 16px rgba(124, 58, 237, 0.25);
}

@media (hover: hover) and (pointer: fine) {
  .btn--primary:hover:not(:disabled) {
    transform: translateY(-1px);
    box-shadow: 0 6px 20px rgba(124, 58, 237, 0.35);
  }
}

.btn--primary:active:not(:disabled) {
  transform: translateY(0);
}

.btn--primary:disabled {
  opacity: 0.55;
  cursor: not-allowed;
  transform: none;
}

.btn--secondary {
  flex: 1;
  max-width: 9rem;
  padding: 0.55rem 1rem;
  color: var(--text-primary);
  background: transparent;
  border: 1px solid var(--border-color);
}

.btn--secondary:hover:not(:disabled) {
  background: rgba(255, 255, 255, 0.06);
  border-color: rgba(255, 255, 255, 0.18);
}

.btn--secondary:disabled {
  opacity: 0.45;
  cursor: not-allowed;
}

#stopButton.btn--secondary {
  border-color: rgba(244, 114, 182, 0.35);
}

#stopButton.btn--secondary:hover:not(:disabled) {
  background: rgba(244, 114, 182, 0.1);
  border-color: rgba(244, 114, 182, 0.5);
}

button.control-button.active {
  background: var(--accent-color-2);
  box-shadow: 0 4px 15px rgba(34, 211, 238, 0.25);
}

.player-controls {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  gap: 0.65rem;
  margin-top: 0.25rem;
}

.spatial-indicator {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 6px 12px;
  border-radius: 999px;
  background: rgba(0, 0, 0, 0.15);
  font-size: 11px;
  font-weight: 600;
}

.spatial-indicator .left-channel,
.spatial-indicator .right-channel {
  width: 22px;
  height: 22px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  font-size: 10px;
}

.spatial-indicator .left-channel {
  background-color: var(--accent-color-1);
  color: white;
}

.spatial-indicator .right-channel {
  background-color: var(--accent-color-2);
  color: #0f111a;
}

@media (prefers-reduced-motion: no-preference) {
  .spatial-indicator .left-channel,
  .spatial-indicator .right-channel {
    animation: channelPulse 2.5s ease-in-out infinite alternate;
  }

  .spatial-indicator .right-channel {
    animation-delay: -0.5s;
  }
}

@keyframes channelPulse {
  from {
    opacity: 0.75;
    transform: scale(0.96);
  }
  to {
    opacity: 1;
    transform: scale(1);
  }
}

.hidden {
  display: none !important;
}

#trackInfo,
.track-info {
  margin-top: 0.75rem;
  padding: 0.65rem 0.75rem;
  font-size: 0.875rem;
  color: var(--text-secondary);
  text-align: center;
  background: rgba(0, 0, 0, 0.2);
  border-radius: var(--border-radius-sm);
  border: 1px solid var(--border-color);
  min-height: 2.5rem;
  transition: opacity var(--transition-speed);
}

.track-info:empty {
  display: none;
}

footer {
  margin-top: 0.5rem;
  font-size: 0.8rem;
  color: var(--text-secondary);
  text-align: center;
}

.viz-panel {
  display: flex;
  flex-direction: column;
  gap: 0.65rem;
}

.viz-panel__title {
  margin-bottom: 0;
}

.viz-panel__stage {
  position: relative;
  width: 100%;
  height: 260px;
  min-height: 220px;
  border-radius: var(--border-radius-md);
  overflow: hidden;
  background: rgba(0, 0, 0, 0.25);
  border: 1px solid var(--border-color);
}

#visualizerCanvas {
  width: 100% !important;
  height: 100% !important;
  display: block !important;
  position: absolute;
  top: 0;
  left: 0;
  z-index: 1;
  background-color: rgba(0, 0, 0, 0.12);
}

.about-details__summary {
  cursor: pointer;
  font-weight: 600;
  font-size: 1rem;
  color: var(--text-primary);
  list-style: none;
  padding: 0.15rem 0;
}

.about-details__summary::-webkit-details-marker {
  display: none;
}

.about-details__summary::after {
  content: "";
  display: inline-block;
  width: 0.45em;
  height: 0.45em;
  margin-left: 0.5rem;
  border-right: 2px solid var(--text-secondary);
  border-bottom: 2px solid var(--text-secondary);
  transform: rotate(45deg);
  vertical-align: 0.15em;
  transition: transform var(--transition-speed);
}

.about-details[open] .about-details__summary::after {
  transform: rotate(-135deg);
  vertical-align: 0.05em;
}

.about-details__content {
  padding-top: 0.85rem;
  margin-top: 0.5rem;
  border-top: 1px solid var(--border-color);
}

.about-details__heading {
  font-size: 1.05rem;
  margin-bottom: 0.5rem;
}

.sound-info-list {
  margin: 0.75rem 0;
  padding-left: 1.15rem;
  color: var(--text-secondary);
  font-size: 0.875rem;
}

.sound-info-list li {
  margin-bottom: 0.5rem;
}

.sound-info-list strong {
  color: var(--text-primary);
}

.tip {
  font-size: 0.85rem;
  color: var(--muted-foreground);
  margin-top: 0.5rem;
}

.pulse-animation {
  animation: btnPulse 0.55s ease;
}

@keyframes btnPulse {
  0% {
    transform: scale(1);
  }
  40% {
    transform: scale(1.02);
  }
  100% {
    transform: scale(1);
  }
}

@media (prefers-reduced-motion: reduce) {
  .pulse-animation {
    animation: none;
  }
}

/* Theme overrides (body classes set in app.js) */
body.light-theme {
  color-scheme: light;
  --bg-color: #f8fafc;
  --card-bg-color: #ffffff;
  --text-primary: #0f172a;
  --text-secondary: #64748b;
  --muted-foreground: #64748b;
  --border-color: rgba(15, 23, 42, 0.1);
  --shadow-color: rgba(15, 23, 42, 0.08);
  --shadow-card: 0 4px 20px rgba(15, 23, 42, 0.08);
}

body.space-gray-theme {
  color-scheme: dark;
  --bg-color: #1c1f26;
  --card-bg-color: #2a2f38;
  --text-primary: #e8eaed;
  --text-secondary: #9aa0a6;
  --muted-foreground: #9aa0a6;
  --border-color: rgba(255, 255, 255, 0.06);
}

body.silver-theme {
  color-scheme: light;
  --bg-color: #e8e8ea;
  --card-bg-color: #f4f4f6;
  --text-primary: #1a1a1c;
  --text-secondary: #5c5c66;
  --muted-foreground: #5c5c66;
  --border-color: rgba(0, 0, 0, 0.08);
  --shadow-card: 0 4px 20px rgba(0, 0, 0, 0.06);
}

body.gold-theme {
  color-scheme: light;
  --bg-color: #faf6ef;
  --card-bg-color: #fffdf8;
  --text-primary: #3d3428;
  --text-secondary: #7a6e5c;
  --muted-foreground: #7a6e5c;
  --border-color: rgba(180, 140, 60, 0.15);
  --accent-color-1: #b8860b;
  --color-accent-primary: #b8860b;
}

body.midnight-green-theme {
  color-scheme: dark;
  --bg-color: #0d1f1a;
  --card-bg-color: #152e28;
  --text-primary: #ecfdf5;
  --text-secondary: #86b8a8;
  --muted-foreground: #86b8a8;
  --border-color: rgba(52, 211, 153, 0.12);
  --accent-color-1: #34d399;
  --accent-color-2: #2dd4bf;
  --color-accent-primary: #34d399;
}

body.animations-disabled *,
body.animations-disabled *::before,
body.animations-disabled *::after {
  animation: none !important;
  transition-duration: 0.01ms !important;
}

@media (max-width: 768px) {
  body {
    padding: 1rem 0.9rem 1.5rem;
  }

  #app {
    max-width: 100%;
  }

  .glass-section {
    padding: 1.1rem 1rem;
  }

  .btn--primary {
    font-size: 0.9rem;
    padding: 0.7rem 1rem;
  }
}

/* —— Research plan UI —— */
.headphones-hint {
  padding: 0.65rem 1rem;
  border-radius: var(--border-radius-md);
  background: rgba(34, 211, 238, 0.12);
  border: 1px solid rgba(34, 211, 238, 0.35);
  color: var(--text-primary);
  font-size: 0.875rem;
}

.headphones-hint.hidden {
  display: none;
}

.evidence-badge,
.evidence-inline {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 600;
  padding: 0.2rem 0.5rem;
  border-radius: 999px;
  margin-top: 0.35rem;
}

.evidence--strong { background: rgba(34, 197, 94, 0.2); color: #86efac; }
.evidence--moderate { background: rgba(59, 130, 246, 0.2); color: #93c5fd; }
.evidence--emerging { background: rgba(251, 191, 36, 0.2); color: #fcd34d; }
.evidence--wellness { background: rgba(167, 139, 250, 0.2); color: #c4b5fd; }

.field-hint--warn {
  color: #fbbf24;
  margin-top: 0.35rem;
}

.field-hint--mono {
  font-family: ui-monospace, monospace;
  font-size: 0.78rem;
}

.wellness-disclaimer {
  font-size: 0.875rem;
  color: var(--text-secondary);
  margin-bottom: 0.75rem;
  padding: 0.5rem 0.65rem;
  border-left: 3px solid var(--color-accent-primary);
}

.mood-row {
  display: grid;
  grid-template-columns: 1fr auto;
  align-items: center;
  gap: 0.5rem;
}

.session-actions {
  margin-top: 0.25rem;
}

.btn--small {
  font-size: 0.8rem;
  padding: 0.45rem 0.75rem;
}

.breath-pacer-section.hidden {
  display: none;
}

.breath-pacer {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.75rem;
  padding: 1rem 0;
}

.breath-orb {
  width: 7rem;
  height: 7rem;
  border-radius: 50%;
  background: radial-gradient(circle at 30% 30%, #fcd34d, #f59e0b);
  box-shadow: 0 0 40px rgba(251, 191, 36, 0.35);
  transition: transform 4s ease-in-out, background 0.6s ease;
  transform: scale(1);
}

.breath-orb--exhale {
  transform: scale(0.72);
  background: radial-gradient(circle at 30% 30%, #67e8f9, #0891b2);
  box-shadow: 0 0 30px rgba(34, 211, 238, 0.3);
}

.breath-label {
  font-size: 1.1rem;
  font-weight: 600;
}

.ave-overlay {
  position: absolute;
  inset: 0;
  background: #fff;
  pointer-events: none;
  opacity: 0;
  transition: opacity 0.15s linear;
  z-index: 2;
  border-radius: inherit;
}

.ave-overlay.hidden {
  display: none;
}

.viz-panel__stage {
  position: relative;
}

.session-history-list {
  list-style: none;
  margin: 0.5rem 0 0;
  padding: 0;
  font-size: 0.85rem;
  color: var(--text-secondary);
}

.session-history-list li {
  padding: 0.35rem 0;
  border-bottom: 1px solid var(--border-color);
}

.session-history-empty {
  font-style: italic;
}