/* PRISM - Threshold Codex Design System */
/* Philosophy: Between clinical tool and divination deck. Sacred geometry meets accessibility. */

/* ============================================================
   RESET & BASE
   ============================================================ */

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

:root {
  /* Core palette */
  --bg:              #0d0d16;
  --surface:         #16162a;
  --surface-raised:  #18182a;
  --border:          #1e1e3a;
  --border-subtle:   #161628;
  --text-primary:    #f0ece4;
  --text-secondary:  #a09cac;
  --text-muted:      #6e6b82;
  --accent-gold:     #c9a84c;
  --accent-rose:     #b06078;
  --danger:          #8b3a3a;
  --danger-soft:     #3a1a1a;

  /* Typography */
  --base-font-size:  18px;
  --font-serif:      Georgia, 'Times New Roman', serif;
  --font-sans:       system-ui, -apple-system, sans-serif;
  --font-mono:       'Courier New', Courier, monospace;

  /* Spacing */
  --space-xs:  0.25rem;
  --space-sm:  0.5rem;
  --space-md:  1rem;
  --space-lg:  1.5rem;
  --space-xl:  2rem;
  --space-2xl: 3rem;

  /* Radii */
  --radius-sm:  6px;
  --radius-md:  12px;
  --radius-lg:  20px;
  --radius-full: 9999px;

  /* Transitions */
  --transition-fast:   150ms ease;
  --transition-normal: 300ms ease;
  --transition-slow:   600ms ease;

  /* Card */
  --card-max-width: 420px;
  --card-min-height: 580px;
}

html {
  font-size: var(--base-font-size);
  background: var(--bg);
  color: var(--text-primary);
  font-family: var(--font-sans);
  -webkit-text-size-adjust: 100%;
  height: 100%;
}

body {
  min-height: 100dvh;
  min-height: 100vh;
  background: var(--bg);
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  display: flex;
  flex-direction: column;
}

/* Reduce motion support */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
}

/* ============================================================
   APP SHELL
   ============================================================ */

#app {
  min-height: 100dvh;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  position: relative;
}

.screen {
  display: flex;
  flex-direction: column;
  min-height: 100dvh;
  min-height: 100vh;
  padding: env(safe-area-inset-top) env(safe-area-inset-right) env(safe-area-inset-bottom) env(safe-area-inset-left);
}

/* ============================================================
   SCREEN: LANDING
   ============================================================ */

.landing {
  justify-content: space-between;
  align-items: center;
  padding: var(--space-xl) var(--space-lg);
}

.landing__header {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-md);
  padding-top: var(--space-xl);
}

.prism-mark {
  width: 80px;
  height: 80px;
  opacity: 0.9;
}

.landing__title {
  font-family: var(--font-serif);
  font-size: 2rem;
  font-weight: normal;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--text-primary);
}

.landing__tagline {
  font-size: 0.75rem;
  letter-spacing: 0.2em;
  color: var(--text-muted);
  text-transform: uppercase;
  text-align: center;
}

.landing__modes {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
  width: 100%;
  max-width: 360px;
}

.mode-btn {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: var(--space-xl) var(--space-2xl);
  cursor: pointer;
  text-align: left;
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
  transition: border-color var(--transition-fast), background var(--transition-fast);
  -webkit-tap-highlight-color: transparent;
  min-height: 88px;
}

.mode-btn:hover,
.mode-btn:focus-visible {
  border-color: var(--text-secondary);
  background: var(--surface-raised);
  outline: none;
}

.mode-btn:active {
  background: var(--border);
}

.mode-btn__icon {
  font-size: 1.2rem;
  line-height: 1;
}

.mode-btn__label {
  font-family: var(--font-serif);
  font-size: 1.1rem;
  color: var(--text-primary);
}

.mode-btn__desc {
  font-size: 0.8rem;
  color: var(--text-secondary);
}

.mode-btn--crisis {
  border-color: #2a2040;
  background: #0e0e1e;
}

.mode-btn--crisis:hover,
.mode-btn--crisis:focus-visible {
  border-color: var(--text-secondary);
}

.mode-btn--crisis .mode-btn__label {
  color: #b0a8d0;
}

.landing__footer {
  display: flex;
  justify-content: center;
  gap: var(--space-xl);
  padding-bottom: var(--space-md);
}

.footer-link {
  font-size: 0.8rem;
  color: var(--text-muted);
  background: none;
  border: none;
  cursor: pointer;
  text-decoration: none;
  padding: var(--space-sm) var(--space-md);
  letter-spacing: 0.05em;
  transition: color var(--transition-fast);
  -webkit-tap-highlight-color: transparent;
}

.footer-link:hover,
.footer-link:focus-visible {
  color: var(--text-secondary);
  outline: none;
}

/* ============================================================
   SCREEN: CRISIS DISCLAIMER
   ============================================================ */

.disclaimer-screen {
  justify-content: center;
  align-items: center;
  padding: var(--space-xl);
  gap: var(--space-xl);
}

.disclaimer-card {
  background: var(--surface);
  border: 1px solid #2a2040;
  border-radius: var(--radius-md);
  padding: var(--space-xl);
  max-width: 380px;
  display: flex;
  flex-direction: column;
  gap: var(--space-lg);
}

.disclaimer-card__title {
  font-family: var(--font-serif);
  font-size: 1.2rem;
  font-weight: normal;
  color: #b0a8d0;
}

.disclaimer-card__text {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

.disclaimer-card__actions {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

/* ============================================================
   SCREEN: SESSION
   ============================================================ */

.session-screen {
  position: relative;
  overflow: hidden;
}

/* Layer bar */
.layer-bar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  z-index: 100;
  transition: background-color var(--transition-slow);
}

.layer-bar__progress {
  height: 100%;
  transition: width var(--transition-normal), background-color var(--transition-slow);
}

/* Session header */
.session-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: calc(var(--space-md) + 3px) var(--space-lg) var(--space-sm);
  position: relative;
  z-index: 10;
}

.session-header__layer {
  font-size: 0.7rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--text-muted);
  font-family: var(--font-mono);
}

.session-header__progress {
  font-size: 0.7rem;
  letter-spacing: 0.1em;
  color: var(--text-muted);
  font-family: var(--font-mono);
}

.session-controls {
  display: flex;
  gap: var(--space-md);
}

.icon-btn {
  background: none;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
  padding: var(--space-sm);
  border-radius: var(--radius-sm);
  font-size: 1.1rem;
  transition: color var(--transition-fast);
  -webkit-tap-highlight-color: transparent;
  min-width: 36px;
  min-height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.icon-btn:hover,
.icon-btn:focus-visible {
  color: var(--text-secondary);
  outline: none;
}

/* Card viewport */
.card-viewport {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-md) var(--space-lg);
  position: relative;
  cursor: pointer;
}

/* THE CARD */
.prism-card {
  width: 100%;
  max-width: var(--card-max-width);
  min-height: var(--card-min-height);
  background: var(--surface);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  padding: var(--space-xl);
  gap: var(--space-lg);
  position: relative;
  overflow: hidden;
  transition: opacity var(--transition-normal), transform var(--transition-normal);
  border-top: 3px solid transparent;
}

.prism-card.card-exiting {
  opacity: 0;
  transform: translateX(-20px);
}

.prism-card.card-entering {
  animation: cardEnter 400ms ease both;
}

@keyframes cardEnter {
  from { opacity: 0; transform: translateX(20px); }
  to   { opacity: 1; transform: translateX(0); }
}

/* Card inner glow */
.prism-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 120px;
  background: linear-gradient(180deg, var(--layer-glow, rgba(200,160,76,0.04)) 0%, transparent 100%);
  pointer-events: none;
}

/* Card number */
.card-number {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--text-muted);
}

/* Card symbol */
.card-symbol {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-md) 0;
}

.card-symbol svg {
  opacity: 0.85;
}

/* Card title */
.card-title {
  font-family: var(--font-serif);
  font-size: 1.7rem;
  font-weight: normal;
  color: var(--text-primary);
  letter-spacing: 0.05em;
}

.card-subtitle {
  font-size: 1rem;
  color: var(--text-muted);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-top: -var(--space-sm);
}

/* THE PROMPT - most prominent */
.card-prompt {
  font-family: var(--font-serif);
  font-size: 1.35rem;
  font-style: italic;
  color: var(--text-primary);
  line-height: 1.8;
  flex: 1;
  border-left: 2px solid transparent;
  padding-left: var(--space-md);
}

/* Card guidance */
.card-guidance {
  font-size: 1.05rem;
  color: var(--text-secondary);
  line-height: 1.6;
  font-style: normal;
  padding: var(--space-md);
  background: rgba(255,255,255,0.02);
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-subtle);
}

.card-guidance-toggle {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
  font-size: 0.7rem;
  color: var(--text-muted);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  cursor: pointer;
  background: none;
  border: none;
  padding: 0;
  margin-top: var(--space-sm);
}

/* Intuitive mode - draw prompt */
.draw-prompt {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-height: var(--card-min-height);
  gap: var(--space-xl);
  width: 100%;
  max-width: var(--card-max-width);
}

.draw-deck {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: var(--space-2xl) var(--space-xl);
  text-align: center;
  cursor: pointer;
  transition: border-color var(--transition-fast), transform var(--transition-fast);
  -webkit-tap-highlight-color: transparent;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-md);
  width: 100%;
}

.draw-deck:hover,
.draw-deck:focus-visible {
  border-color: var(--text-secondary);
  transform: translateY(-2px);
  outline: none;
}

.draw-deck:active {
  transform: translateY(0);
}

.draw-deck__icon {
  font-size: 2.5rem;
  opacity: 0.6;
}

.draw-deck__label {
  font-family: var(--font-serif);
  font-size: 1.2rem;
  color: var(--text-secondary);
}

.draw-dots {
  display: flex;
  gap: var(--space-xs);
  flex-wrap: wrap;
  justify-content: center;
  max-width: 280px;
}

.draw-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--border);
  transition: background var(--transition-fast);
}

.draw-dot.drawn {
  background: var(--accent-gold);
  opacity: 0.7;
}

/* Session footer */
.session-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-sm) var(--space-lg) var(--space-lg);
  gap: var(--space-md);
}

.nav-btn {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-full);
  color: var(--text-secondary);
  cursor: pointer;
  padding: var(--space-sm) var(--space-lg);
  font-size: 0.9rem;
  letter-spacing: 0.05em;
  min-height: 48px;
  min-width: 100px;
  transition: all var(--transition-fast);
  -webkit-tap-highlight-color: transparent;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-xs);
}

.nav-btn:hover,
.nav-btn:focus-visible {
  border-color: var(--text-secondary);
  color: var(--text-primary);
  outline: none;
}

.nav-btn:disabled {
  opacity: 0.3;
  cursor: not-allowed;
}

.nav-btn--primary {
  background: var(--accent-gold);
  border-color: var(--accent-gold);
  color: #0a0a12;
  font-weight: 500;
}

.nav-btn--primary:hover,
.nav-btn--primary:focus-visible {
  background: #d4b45a;
  border-color: #d4b45a;
  color: #0a0a12;
}

.journal-btn {
  background: none;
  border: 1px solid var(--border);
  border-radius: var(--radius-full);
  color: var(--text-muted);
  cursor: pointer;
  padding: var(--space-sm) var(--space-md);
  font-size: 0.8rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  transition: all var(--transition-fast);
  -webkit-tap-highlight-color: transparent;
  min-height: 44px;
  display: flex;
  align-items: center;
  gap: var(--space-xs);
}

.journal-btn:hover,
.journal-btn:focus-visible {
  color: var(--text-secondary);
  border-color: var(--text-secondary);
  outline: none;
}

/* Swipe hint */
.swipe-hint {
  position: absolute;
  bottom: 80px;
  left: 50%;
  transform: translateX(-50%);
  font-size: 0.7rem;
  color: var(--text-muted);
  letter-spacing: 0.1em;
  text-align: center;
  animation: swipeHintFade 3s ease both;
  pointer-events: none;
}

@keyframes swipeHintFade {
  0%   { opacity: 0; }
  20%  { opacity: 1; }
  80%  { opacity: 1; }
  100% { opacity: 0; }
}

/* ============================================================
   LAYER TRANSITION OVERLAY
   ============================================================ */

.layer-transition {
  position: fixed;
  inset: 0;
  z-index: 200;
  background: var(--bg);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--space-lg);
  animation: layerFade 1.8s ease;
}

@keyframes layerFade {
  0%   { opacity: 0; }
  20%  { opacity: 1; }
  80%  { opacity: 1; }
  100% { opacity: 0; }
}

.layer-transition__label {
  font-size: 0.7rem;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--text-muted);
  font-family: var(--font-mono);
}

.layer-transition__name {
  font-family: var(--font-serif);
  font-size: 2rem;
  font-weight: normal;
  color: var(--text-primary);
  letter-spacing: 0.1em;
}

.layer-transition__divider {
  width: 60px;
  height: 1px;
  background: var(--text-muted);
  opacity: 0.4;
}

/* ============================================================
   BREATHING PROMPT
   ============================================================ */

.breathing-overlay {
  position: fixed;
  inset: 0;
  z-index: 300;
  background: rgba(10, 10, 18, 0.95);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--space-xl);
}

.breathing-circle {
  width: 120px;
  height: 120px;
  border-radius: 50%;
  border: 2px solid #4a6fa5;
  background: radial-gradient(circle, rgba(74,111,165,0.15) 0%, transparent 70%);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: transform var(--transition-slow);
}

.breathing-circle.phase-inhale {
  animation: breatheIn 4s ease forwards;
}

.breathing-circle.phase-hold {
  transform: scale(1.3);
}

.breathing-circle.phase-exhale {
  animation: breatheOut 6s ease forwards;
}

@keyframes breatheIn {
  from { transform: scale(1); }
  to   { transform: scale(1.3); }
}

@keyframes breatheOut {
  from { transform: scale(1.3); }
  to   { transform: scale(1); }
}

.breathing-label {
  font-family: var(--font-serif);
  font-size: 1.1rem;
  color: var(--text-secondary);
  font-style: italic;
  letter-spacing: 0.05em;
}

.breathing-count {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--text-muted);
  letter-spacing: 0.2em;
}

/* ============================================================
   SCREEN: JOURNAL
   ============================================================ */

.journal-screen {
  background: var(--bg);
}

.journal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-lg);
  border-bottom: 1px solid var(--border-subtle);
}

.journal-card-ref {
  display: flex;
  flex-direction: column;
  gap: var(--space-xs);
}

.journal-card-ref__number {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  color: var(--text-muted);
  letter-spacing: 0.15em;
  text-transform: uppercase;
}

.journal-card-ref__title {
  font-family: var(--font-serif);
  font-size: 1rem;
  color: var(--text-primary);
}

.journal-actions {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

.journal-timer {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-muted);
}

.journal-body {
  flex: 1;
  display: flex;
  flex-direction: column;
  padding: var(--space-lg);
  gap: var(--space-md);
}

.journal-prompt-echo {
  font-family: var(--font-serif);
  font-size: 0.9rem;
  font-style: italic;
  color: var(--text-secondary);
  padding: var(--space-md);
  border-left: 2px solid var(--border);
  line-height: 1.5;
}

.journal-textarea {
  flex: 1;
  min-height: 50vh;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  color: var(--text-primary);
  font-family: var(--font-sans);
  font-size: 1rem;
  line-height: 1.7;
  padding: var(--space-lg);
  resize: none;
  outline: none;
  transition: border-color var(--transition-fast);
}

.journal-textarea:focus {
  border-color: var(--text-secondary);
}

.journal-textarea::placeholder {
  color: var(--text-muted);
}

.journal-footer {
  padding: var(--space-md) var(--space-lg) var(--space-lg);
  display: flex;
  gap: var(--space-md);
}

.journal-save-state {
  font-size: 0.7rem;
  color: var(--text-muted);
  padding: var(--space-xs) 0;
  font-style: italic;
}

/* ============================================================
   SCREEN: SUMMARY
   ============================================================ */

.summary-screen {
  padding: var(--space-xl) var(--space-lg);
  gap: var(--space-xl);
}

.summary-header {
  text-align: center;
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.summary-header__title {
  font-family: var(--font-serif);
  font-size: 1.5rem;
  font-weight: normal;
}

.summary-header__meta {
  font-size: 0.8rem;
  color: var(--text-secondary);
  font-family: var(--font-mono);
  letter-spacing: 0.1em;
}

.summary-divider {
  width: 60px;
  height: 1px;
  background: var(--border);
  margin: 0 auto;
}

.summary-section {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}

.summary-section__title {
  font-size: 0.7rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--text-muted);
  font-family: var(--font-mono);
}

.card-timeline {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
}

.card-chip {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: var(--space-xs) var(--space-sm);
  font-size: 0.75rem;
  color: var(--text-secondary);
}

.card-chip__dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  flex-shrink: 0;
}

.journal-snippets {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.journal-snippet {
  background: var(--surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  padding: var(--space-md);
  cursor: pointer;
}

.journal-snippet__card {
  font-size: 0.7rem;
  color: var(--text-muted);
  font-family: var(--font-mono);
  letter-spacing: 0.1em;
  margin-bottom: var(--space-xs);
}

.journal-snippet__text {
  font-size: 0.85rem;
  color: var(--text-secondary);
  line-height: 1.5;
}

.summary-actions {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
  padding-top: var(--space-md);
}

/* ============================================================
   SCREEN: HISTORY
   ============================================================ */

.history-screen {
  padding: 0;
}

.history-header {
  padding: var(--space-xl) var(--space-lg) var(--space-md);
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}

.history-header__title {
  font-family: var(--font-serif);
  font-size: 1.3rem;
  font-weight: normal;
}

.history-filters {
  display: flex;
  gap: var(--space-sm);
  flex-wrap: wrap;
}

.filter-btn {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-full);
  color: var(--text-muted);
  cursor: pointer;
  padding: var(--space-xs) var(--space-md);
  font-size: 0.8rem;
  transition: all var(--transition-fast);
  -webkit-tap-highlight-color: transparent;
}

.filter-btn.active,
.filter-btn:hover {
  border-color: var(--text-secondary);
  color: var(--text-primary);
}

.history-list {
  flex: 1;
  overflow-y: auto;
  padding: 0 var(--space-lg) var(--space-xl);
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}

.history-item {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  overflow: hidden;
}

.history-item__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-md);
  cursor: pointer;
  -webkit-tap-highlight-color: transparent;
}

.history-item__left {
  display: flex;
  flex-direction: column;
  gap: var(--space-xs);
}

.history-item__mode {
  font-family: var(--font-serif);
  font-size: 0.95rem;
}

.history-item__meta {
  font-size: 0.75rem;
  color: var(--text-muted);
  font-family: var(--font-mono);
}

.history-item__right {
  font-size: 1.2rem;
  color: var(--text-muted);
  transition: transform var(--transition-fast);
}

.history-item__right.open {
  transform: rotate(180deg);
}

.history-item__body {
  border-top: 1px solid var(--border-subtle);
  padding: var(--space-md);
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}

.history-journal-entry {
  padding: var(--space-sm) var(--space-md);
  border-left: 2px solid var(--border);
}

.history-journal-entry__card {
  font-size: 0.7rem;
  color: var(--text-muted);
  font-family: var(--font-mono);
  letter-spacing: 0.1em;
  margin-bottom: var(--space-xs);
}

.history-journal-entry__text {
  font-size: 0.85rem;
  color: var(--text-secondary);
  line-height: 1.5;
}

.empty-state {
  padding: var(--space-2xl);
  text-align: center;
  color: var(--text-muted);
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
  align-items: center;
}

.empty-state__icon {
  font-size: 2rem;
  opacity: 0.4;
}

.empty-state__text {
  font-size: 0.9rem;
  line-height: 1.5;
}

/* ============================================================
   SCREEN: SETTINGS
   ============================================================ */

.settings-screen {
  padding: var(--space-xl) var(--space-lg);
  gap: var(--space-xl);
  overflow-y: auto;
}

.settings-header {
  display: flex;
  align-items: center;
  gap: var(--space-md);
}

.settings-header__title {
  font-family: var(--font-serif);
  font-size: 1.3rem;
  font-weight: normal;
}

.settings-section {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}

.settings-section__title {
  font-size: 0.7rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--text-muted);
  font-family: var(--font-mono);
  padding-bottom: var(--space-xs);
  border-bottom: 1px solid var(--border-subtle);
}

.settings-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-md);
}

.settings-row__label {
  font-size: 0.9rem;
  color: var(--text-secondary);
}

.settings-row__value {
  font-size: 0.8rem;
  color: var(--text-muted);
  font-family: var(--font-mono);
}

/* Toggle */
.toggle {
  position: relative;
  width: 44px;
  height: 24px;
  cursor: pointer;
  flex-shrink: 0;
}

.toggle input {
  opacity: 0;
  position: absolute;
}

.toggle-track {
  position: absolute;
  inset: 0;
  background: var(--border);
  border-radius: var(--radius-full);
  transition: background var(--transition-fast);
}

.toggle input:checked + .toggle-track {
  background: var(--accent-gold);
}

.toggle-thumb {
  position: absolute;
  top: 3px;
  left: 3px;
  width: 18px;
  height: 18px;
  background: var(--text-primary);
  border-radius: 50%;
  transition: transform var(--transition-fast);
}

.toggle input:checked ~ .toggle-thumb {
  transform: translateX(20px);
}

/* Font size selector */
.font-size-btns {
  display: flex;
  gap: var(--space-xs);
}

.font-size-btn {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text-muted);
  cursor: pointer;
  padding: var(--space-xs) var(--space-sm);
  font-size: 0.75rem;
  transition: all var(--transition-fast);
  min-height: 36px;
  min-width: 36px;
}

.font-size-btn.active {
  border-color: var(--accent-gold);
  color: var(--accent-gold);
}

/* Action buttons (settings) */
.action-btn {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  color: var(--text-secondary);
  cursor: pointer;
  padding: var(--space-md) var(--space-lg);
  font-size: 0.9rem;
  text-align: left;
  width: 100%;
  transition: all var(--transition-fast);
  -webkit-tap-highlight-color: transparent;
}

.action-btn:hover,
.action-btn:focus-visible {
  border-color: var(--text-secondary);
  color: var(--text-primary);
  outline: none;
}

.action-btn--danger {
  border-color: var(--danger-soft);
  color: var(--danger);
}

.action-btn--danger:hover {
  background: var(--danger-soft);
  border-color: var(--danger);
}

/* ============================================================
   SCREEN: ABOUT
   ============================================================ */

.about-screen {
  padding: var(--space-xl) var(--space-lg);
  gap: var(--space-xl);
  overflow-y: auto;
}

.about-header {
  display: flex;
  align-items: center;
  gap: var(--space-md);
}

.about-title {
  font-family: var(--font-serif);
  font-size: 1.3rem;
  font-weight: normal;
}

.about-section {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}

.about-section__title {
  font-size: 0.7rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--text-muted);
  font-family: var(--font-mono);
}

.about-section__text {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.7;
}

.about-section__text strong {
  color: var(--text-primary);
}

.layer-table {
  display: flex;
  flex-direction: column;
  gap: var(--space-xs);
}

.layer-row {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  padding: var(--space-sm);
  border-radius: var(--radius-sm);
  background: var(--surface);
}

.layer-row__dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  flex-shrink: 0;
}

.layer-row__name {
  font-size: 0.85rem;
  color: var(--text-primary);
  min-width: 120px;
}

.layer-row__desc {
  font-size: 0.8rem;
  color: var(--text-muted);
}

.disclaimer-box {
  background: var(--danger-soft);
  border: 1px solid var(--danger);
  border-radius: var(--radius-md);
  padding: var(--space-lg);
  font-size: 0.85rem;
  color: #c87070;
  line-height: 1.6;
}

/* ============================================================
   SHARED BUTTONS
   ============================================================ */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
  padding: var(--space-md) var(--space-xl);
  border-radius: var(--radius-md);
  border: 1px solid transparent;
  font-size: 1rem;
  cursor: pointer;
  transition: all var(--transition-fast);
  -webkit-tap-highlight-color: transparent;
  min-height: 56px;
  width: 100%;
  font-family: var(--font-sans);
}

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

.btn--primary {
  background: var(--accent-gold);
  color: #0a0a12;
  font-weight: 500;
}

.btn--primary:hover {
  background: #d4b45a;
}

.btn--secondary {
  background: var(--surface);
  border-color: var(--border);
  color: var(--text-secondary);
}

.btn--secondary:hover {
  border-color: var(--text-secondary);
  color: var(--text-primary);
}

.btn--ghost {
  background: none;
  color: var(--text-muted);
}

.btn--ghost:hover {
  color: var(--text-secondary);
}

.btn--danger {
  background: var(--danger-soft);
  border-color: var(--danger);
  color: #c87070;
}

.btn--sm {
  min-height: 40px;
  padding: var(--space-sm) var(--space-lg);
  font-size: 0.85rem;
}

/* ============================================================
   UTILITY
   ============================================================ */

[x-cloak] { display: none !important; }

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0,0,0,0);
  border: 0;
}

.text-center { text-align: center; }
.text-muted  { color: var(--text-muted); }
.text-mono   { font-family: var(--font-mono); }
.flex-1      { flex: 1; }
.w-full      { width: 100%; }

.divider {
  height: 1px;
  background: var(--border-subtle);
  border: none;
  margin: 0;
}

/* ============================================================
   BACK BUTTON
   ============================================================ */

.back-btn {
  background: none;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
  font-size: 1.3rem;
  padding: var(--space-sm);
  min-width: 40px;
  min-height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-sm);
  transition: color var(--transition-fast);
  -webkit-tap-highlight-color: transparent;
}

.back-btn:hover,
.back-btn:focus-visible {
  color: var(--text-secondary);
  outline: none;
}

/* ============================================================
   SCROLL
   ============================================================ */

.scrollable {
  overflow-y: auto;
  -webkit-overflow-scrolling: touch;
}

/* Thin scrollbar */
::-webkit-scrollbar {
  width: 4px;
}

::-webkit-scrollbar-track {
  background: var(--bg);
}

::-webkit-scrollbar-thumb {
  background: var(--border);
  border-radius: 2px;
}

/* ============================================================
   RESPONSIVE - desktop gets centered card layout
   ============================================================ */

@media (min-width: 640px) {
  .landing {
    padding: var(--space-2xl);
  }

  .card-viewport {
    padding: var(--space-xl);
  }

  .session-footer {
    max-width: 480px;
    margin: 0 auto;
    width: 100%;
  }
}

@media (min-width: 1024px) {
  .session-screen {
    flex-direction: row;
  }
}

/* ============================================================
   PRINT
   ============================================================ */

@media print {
  .session-header,
  .session-footer,
  .layer-bar,
  .journal-btn {
    display: none;
  }
}