:root {
  /* === Warm Natural Palette === */
  --surface-dark: #1C1612;
  --surface-mid: #2D231A;
  --surface-light: #3F3024;
  --surface-highlight: #52412F;

  --card-face: #F5EDDA;
  --card-face-alt: #EFE7D4;
  --card-edge: #3F3024;
  --card-shadow: rgba(0, 0, 0, 0.4);

  --text-ink: #2E2418;
  --text-ink-secondary: #5C4E3C;
  --text-ink-muted: #8A7A66;
  --text-surface: #DDD0B8;
  --text-surface-muted: #9A8E78;

  --border-card: #C8BAA2;
  --border-card-light: #E0D6C4;

  --accent-critical: #A03020;
  --accent-warning: #C58A1A;
  --accent-info: #4A8A7A;
  --accent-success: #4A7A4A;
  --accent-critical-bg: rgba(160, 48, 32, 0.14);
  --accent-warning-bg: rgba(197, 138, 26, 0.14);
  --accent-info-bg: rgba(74, 138, 122, 0.14);
  --accent-success-bg: rgba(74, 122, 74, 0.14);

  --tier-history: #5A8AAA;
  --tier-physical: #6A9A6A;
  --tier-lab: #C89A2A;
  --tier-imaging: #A05A72;

  --shadow-card: 0 2px 8px var(--card-shadow), 0 1px 3px rgba(0,0,0,0.25);
  --shadow-card-hover: 0 8px 24px var(--card-shadow), 0 4px 8px rgba(0,0,0,0.25);
  --shadow-card-lifted: 0 12px 32px var(--card-shadow), 0 6px 12px rgba(0,0,0,0.35);

  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-card: 10px;

  --font-ui: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', system-ui, sans-serif;
  --font-narrative: 'Charter', 'Georgia', 'Times New Roman', serif;

  --transition-fast: 150ms ease;
  --transition-normal: 300ms ease;
  --transition-slow: 600ms ease;
  --transition-card: 250ms cubic-bezier(0.4, 0, 0.2, 1);
}

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

/* === Pixel-art asset rendering === */
.pixel-icon {
  image-rendering: pixelated;
  image-rendering: crisp-edges;
  vertical-align: middle;
  display: inline-block;
}

.game-backdrop {
  position: fixed;
  inset: 0;
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  image-rendering: pixelated;
  image-rendering: crisp-edges;
  z-index: 0;
  pointer-events: none;
  opacity: 0.35;
}

.game-backdrop-overlay {
  position: fixed;
  inset: 0;
  background: rgba(28, 22, 18, 0.55);
  z-index: 1;
  pointer-events: none;
}

html {
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* === Game Surface === */
body {
  font-family: var(--font-ui);
  color: var(--text-surface);
  min-height: 100vh;
  line-height: 1.5;
  background: var(--surface-dark);
  background-image:
    radial-gradient(ellipse at 50% 30%, rgba(82, 65, 47, 0.35) 0%, transparent 70%),
    repeating-linear-gradient(
      90deg,
      transparent,
      transparent 40px,
      rgba(255,255,255,0.006) 40px,
      rgba(255,255,255,0.006) 41px
    ),
    repeating-linear-gradient(
      0deg,
      transparent,
      transparent 40px,
      rgba(255,255,255,0.004) 40px,
      rgba(255,255,255,0.004) 41px
    ),
    linear-gradient(180deg, #1C1612 0%, #241c14 50%, #1C1612 100%);
}

body::before {
  content: '';
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 9999;
  background: radial-gradient(ellipse at 50% 40%, transparent 40%, rgba(0,0,0,0.45) 100%);
}

#app {
  max-width: 1200px;
  margin: 0 auto;
  padding: 24px;
  min-height: 100vh;
  position: relative;
}

.hidden { display: none !important; }

/* === Screens === */
.screen {
  position: relative;
  display: none;
  animation: fadeIn var(--transition-normal) ease;
}
.screen.active { display: block; }

.screen-content {
  position: relative;
  z-index: 2;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}

/* === Game Card (base) === */
.game-card {
  background: var(--card-face);
  border: 2px solid var(--border-card);
  border-radius: var(--radius-card);
  box-shadow: var(--shadow-card);
  padding: 16px;
  position: relative;
  transition: transform var(--transition-card), box-shadow var(--transition-card);
}

.game-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-card-hover);
}

.game-card::before {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: var(--radius-card);
  background: linear-gradient(135deg, rgba(255,255,255,0.06) 0%, transparent 50%);
  pointer-events: none;
}

.game-card .card-header {
  color: var(--text-ink-muted);
  border-bottom-color: var(--border-card-light);
}

/* === Legacy Card (panels, info boxes) === */
.card {
  background: var(--surface-mid);
  border: 1px solid var(--surface-light);
  border-radius: var(--radius-md);
  box-shadow: 0 1px 4px rgba(0,0,0,0.25);
  padding: 20px;
  margin-bottom: 16px;
  color: var(--text-surface);
}

.card-header {
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--text-surface-muted);
  margin-bottom: 12px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--surface-light);
}

/* === Buttons === */
.btn {
  font-family: var(--font-ui);
  font-size: 0.875rem;
  font-weight: 500;
  border: 1px solid var(--surface-light);
  border-radius: var(--radius-sm);
  padding: 8px 16px;
  cursor: pointer;
  background: var(--surface-mid);
  color: var(--text-surface);
  transition: all var(--transition-fast);
  user-select: none;
}

.btn:hover {
  background: var(--surface-highlight);
  box-shadow: 0 2px 8px rgba(0,0,0,0.25);
}

.btn:active {
  transform: scale(0.98);
}

.btn:disabled {
  opacity: 0.4;
  cursor: not-allowed;
  transform: none;
}

.btn-primary {
  background: var(--card-face);
  color: var(--text-ink);
  border-color: var(--border-card);
  font-weight: 600;
}

.btn-primary:hover {
  background: var(--card-face-alt);
  box-shadow: var(--shadow-card);
}

.btn-danger {
  color: var(--accent-critical);
  border-color: var(--accent-critical);
}

.btn-danger:hover {
  background: var(--accent-critical-bg);
}

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

/* === Typography === */
h1 {
  font-size: 1.75rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.2;
  color: var(--card-face);
  font-family: var(--font-narrative);
}

h2 {
  font-size: 1.25rem;
  font-weight: 600;
  letter-spacing: -0.01em;
  color: var(--card-face);
  font-family: var(--font-narrative);
}

h3 {
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-surface);
}

.narrative-text {
  font-family: var(--font-narrative);
  font-size: 1.05rem;
  line-height: 1.7;
  color: var(--text-surface);
}

.label {
  font-size: 0.7rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-surface-muted);
}

/* === Layout helpers === */
.flex { display: flex; }
.flex-col { flex-direction: column; }
.flex-wrap { flex-wrap: wrap; }
.items-center { align-items: center; }
.justify-between { justify-content: space-between; }
.gap-8 { gap: 8px; }
.gap-12 { gap: 12px; }
.gap-16 { gap: 16px; }
.gap-24 { gap: 24px; }
.mt-8 { margin-top: 8px; }
.mt-16 { margin-top: 16px; }
.mt-24 { margin-top: 24px; }
.mb-8 { margin-bottom: 8px; }
.mb-16 { margin-bottom: 16px; }

/* === Card Flip System === */
.card-flip-container {
  perspective: 1200px;
}

.card-flip-inner {
  position: relative;
  transition: transform 0.7s cubic-bezier(0.4, 0, 0.2, 1);
  transform-style: preserve-3d;
}

.card-flip-inner.flipped {
  transform: rotateY(180deg);
}

.card-front,
.card-back {
  position: absolute;
  inset: 0;
  backface-visibility: hidden;
  border-radius: var(--radius-card);
}

.card-back {
  transform: rotateY(180deg);
}

/* === Card Back Design === */
.card-back-design {
  background: linear-gradient(135deg, var(--surface-mid) 0%, var(--surface-light) 100%);
  border: 2px solid var(--surface-light);
  border-radius: var(--radius-card);
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  position: relative;
}

.card-back-design::before {
  content: '';
  position: absolute;
  inset: 6px;
  border: 1px solid var(--surface-highlight);
  border-radius: calc(var(--radius-card) - 4px);
}

.card-back-design::after {
  content: '\2695';
  font-size: 2.5rem;
  color: var(--surface-highlight);
  opacity: 0.6;
}

/* ========================================
   DIFFERENTIAL BOARD
   ======================================== */
.dx-board {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
  gap: 12px;
  margin-top: 12px;
}

.diff-capital {
  font-size: 0.8rem;
  color: var(--text-surface);
}

.dx-card {
  background: var(--card-face);
  border: 2px solid var(--border-card);
  border-radius: var(--radius-card);
  padding: 14px 16px;
  box-shadow: var(--shadow-card);
  transition: transform var(--transition-card), box-shadow var(--transition-card), border-color 400ms ease;
  color: var(--text-ink);
  position: relative;
}

.dx-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-card-hover);
}

.dx-card-top {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 10px;
}

.dx-card-indicator {
  display: flex;
  align-items: center;
  gap: 4px;
  flex-shrink: 0;
}

.dx-card-info {
  flex: 1;
  min-width: 0;
}

.dx-card-name {
  font-family: var(--font-narrative);
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text-ink);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.dx-card-conviction {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.dx-slider-section {
  display: flex;
  align-items: center;
  gap: 8px;
}

.dx-sealed-badge {
  font-size: 0.65rem;
  font-weight: 700;
  padding: 3px 8px;
  border-radius: var(--radius-sm);
  background: rgba(197, 138, 26, 0.15);
  color: var(--accent-warning);
  letter-spacing: 0.02em;
  white-space: nowrap;
}

/* Submit CTA below board */
.dx-submit-area {
  text-align: center;
  padding: 20px 0 8px;
  animation: fadeIn 400ms ease;
}

.dx-submit-btn {
  font-size: 1rem;
  padding: 14px 32px;
  border-radius: var(--radius-md);
  background: var(--accent-success);
  color: #fff;
  border: 2px solid var(--accent-success);
  font-weight: 700;
  letter-spacing: 0.02em;
  cursor: pointer;
  transition: all var(--transition-fast);
  box-shadow: 0 4px 16px rgba(74, 122, 74, 0.3);
}

.dx-submit-btn:hover {
  background: #5A8A5A;
  box-shadow: 0 6px 24px rgba(74, 122, 74, 0.4);
  transform: translateY(-2px);
}

.dx-submit-hint {
  font-size: 0.75rem;
  color: var(--text-surface-muted);
  margin-top: 8px;
  font-style: italic;
}

.dx-flash {
  border-color: var(--accent-warning);
  animation: dxCardFlash 1200ms ease forwards;
}

.dx-flash-big {
  animation: dxCardFlashBig 1200ms ease forwards;
}

@keyframes dxCardFlash {
  0% { border-color: var(--accent-warning); box-shadow: var(--shadow-card), 0 0 8px rgba(197,138,26,0.2); }
  100% { border-color: var(--border-card); box-shadow: var(--shadow-card); }
}

@keyframes dxCardFlashBig {
  0% { border-color: var(--accent-warning); box-shadow: var(--shadow-card), 0 0 16px rgba(197,138,26,0.3); }
  50% { border-color: var(--accent-warning); }
  100% { border-color: var(--border-card); box-shadow: var(--shadow-card); }
}

/* Legacy diff-row kept for compatibility */
.diff-row {
  display: grid;
  grid-template-columns: 16px 16px 1fr 2fr auto;
  gap: 10px;
  align-items: center;
  padding: 10px 12px;
  border-radius: var(--radius-sm);
  background: var(--surface-mid);
  transition: background 400ms ease, box-shadow 400ms ease;
}

.diff-heat {
  width: 14px;
  height: 14px;
  border-radius: 50%;
  transition: background 800ms cubic-bezier(0.25, 0.46, 0.45, 0.94),
              opacity 800ms ease,
              box-shadow 400ms ease;
  flex-shrink: 0;
  box-shadow: 0 0 4px 1px rgba(0,0,0,0.15);
}

.diff-shift {
  font-size: 0.65rem;
  width: 14px;
  text-align: center;
  font-weight: 700;
  opacity: 0;
  transition: opacity 200ms ease;
}

.diff-shift.shift-up {
  color: var(--accent-warning);
  opacity: 1;
  animation: shiftBounce 600ms ease;
}

.diff-shift.shift-down {
  color: var(--accent-info);
  opacity: 1;
  animation: shiftBounce 600ms ease;
}

.diff-shift.shift-big {
  font-size: 0.8rem;
  animation: shiftBounceBig 800ms ease;
}

.diff-name {
  font-size: 0.85rem;
  font-weight: 500;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  color: var(--text-surface);
}

.diff-slider-wrap {
  display: flex;
  align-items: center;
  gap: 8px;
}

.diff-slider {
  flex: 1;
  -webkit-appearance: none;
  appearance: none;
  height: 6px;
  background: var(--surface-light);
  border-radius: 3px;
  outline: none;
  min-width: 80px;
}

.diff-slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: var(--card-face);
  cursor: pointer;
  border: 2px solid var(--border-card);
  box-shadow: 0 1px 4px rgba(0,0,0,0.35);
  transition: transform 150ms ease;
}

.diff-slider::-webkit-slider-thumb:hover {
  transform: scale(1.15);
}

.diff-amount {
  width: 32px;
  text-align: right;
  font-size: 0.85rem;
  font-weight: 700;
  font-variant-numeric: tabular-nums;
  color: var(--text-ink);
}

.diff-actions {
  display: flex;
  align-items: center;
  gap: 6px;
  flex-shrink: 0;
}

.diff-locked-badge {
  font-size: 0.65rem;
  font-weight: 700;
  padding: 2px 6px;
  border-radius: var(--radius-sm);
  background: var(--accent-warning-bg);
  color: var(--accent-warning);
  letter-spacing: 0.03em;
}

.diff-locked-badge::before {
  content: '\1F512 ';
  font-size: 0.6rem;
}

.diff-lock-btn {
  font-size: 0.7rem;
  padding: 3px 8px;
}

/* Row flash on probability shift */
.diff-flash {
  background: rgba(197, 138, 26, 0.1);
  box-shadow: inset 3px 0 0 var(--accent-warning);
  animation: diffFlash 1200ms ease forwards;
}

.diff-flash-big {
  animation: diffFlashBig 1200ms ease forwards;
}

.diff-flash .diff-heat {
  box-shadow: 0 0 8px 3px currentColor;
}

@keyframes shiftBounce {
  0% { transform: translateY(4px); opacity: 0; }
  30% { transform: translateY(-2px); opacity: 1; }
  100% { transform: translateY(0); opacity: 1; }
}

@keyframes shiftBounceBig {
  0% { transform: translateY(6px) scale(0.7); opacity: 0; }
  25% { transform: translateY(-4px) scale(1.3); opacity: 1; }
  50% { transform: translateY(1px) scale(1); }
  100% { transform: translateY(0) scale(1); opacity: 1; }
}

@keyframes diffFlash {
  0% { background: rgba(197, 138, 26, 0.1); }
  100% { background: var(--surface-mid); box-shadow: none; }
}

@keyframes diffFlashBig {
  0% { background: rgba(197, 138, 26, 0.15); box-shadow: inset 3px 0 0 var(--accent-warning), 0 0 12px rgba(197,138,26,0.1); }
  50% { background: rgba(197, 138, 26, 0.1); }
  100% { background: var(--surface-mid); box-shadow: none; }
}

/* ========================================
   TEST PANEL
   ======================================== */

/* Deck Resources - prominent inline resources */
.deck-resources {
  display: flex;
  gap: 16px;
  margin-bottom: 16px;
  padding: 12px 14px;
  background: var(--surface-dark);
  border: 1px solid var(--surface-light);
  border-radius: var(--radius-md);
}

.deck-resource-item {
  display: flex;
  align-items: center;
  gap: 8px;
  flex: 1;
  transition: all var(--transition-normal);
}

.deck-resource-item.resource-low {
  animation: resourcePulse 2s ease infinite;
}

.deck-resource-item.resource-critical {
  animation: resourcePulseCrit 1.5s ease infinite;
}

@keyframes resourcePulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.8; }
}

@keyframes resourcePulseCrit {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.65; }
}

.deck-resource-icon {
  font-size: 1.2rem;
  line-height: 1;
  flex-shrink: 0;
}

.deck-resource-label {
  font-size: 0.65rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-surface-muted);
  white-space: nowrap;
}

.deck-resource-bar-track {
  flex: 1;
  height: 8px;
  background: var(--surface-light);
  border-radius: 4px;
  overflow: hidden;
  min-width: 40px;
}

.deck-resource-bar-fill {
  height: 100%;
  border-radius: 4px;
  transition: width var(--transition-normal), background var(--transition-normal);
}

.deck-resource-value {
  font-size: 0.8rem;
  font-weight: 700;
  font-variant-numeric: tabular-nums;
  color: var(--text-surface);
  white-space: nowrap;
  min-width: 48px;
  text-align: right;
}

.test-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 12px;
}

.test-card {
  background: var(--card-face);
  border: 2px solid var(--border-card);
  border-radius: var(--radius-card);
  padding: 14px;
  cursor: pointer;
  transition: all var(--transition-card);
  position: relative;
  overflow: hidden;
  box-shadow: var(--shadow-card);
  color: var(--text-ink);
}

.test-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-card-hover);
  border-color: var(--accent-info);
}

.test-card.ordered {
  opacity: 0.45;
  pointer-events: none;
  transform: rotate(-1deg);
}

.test-card.cant-afford {
  opacity: 0.3;
  pointer-events: none;
}

.test-card-name {
  font-size: 0.9rem;
  font-weight: 600;
  margin-bottom: 6px;
  color: var(--text-ink);
  font-family: var(--font-narrative);
}

.test-card-desc {
  font-size: 0.75rem;
  color: var(--text-ink-secondary);
  margin-bottom: 8px;
  line-height: 1.4;
}

.test-card-meta {
  display: flex;
  gap: 12px;
  font-size: 0.7rem;
  color: var(--text-ink-muted);
}

.test-card-meta span {
  display: flex;
  align-items: center;
  gap: 3px;
}

/* Tier color stripe on test cards */
.test-card[data-tier="0"] { border-top: 3px solid var(--tier-history); }
.test-card[data-tier="1"] { border-top: 3px solid var(--tier-physical); }
.test-card[data-tier="2"] { border-top: 3px solid var(--tier-lab); }
.test-card[data-tier="3"] { border-top: 3px solid var(--tier-imaging); }

.test-card-icon {
  font-size: 1.6rem;
  text-align: center;
  margin-bottom: 6px;
  line-height: 1;
  filter: grayscale(0.2);
}

.test-card-footer {
  display: flex;
  gap: 8px;
  align-items: center;
  font-size: 0.78rem;
  color: var(--text-ink-muted);
  padding-top: 8px;
  border-top: 1px solid var(--border-card-light);
  margin-top: 8px;
}

.test-card-footer span {
  display: flex;
  align-items: center;
  gap: 2px;
}

.test-card-cost {
  font-weight: 600;
}

/* Category labels with tier colors */
.test-card-category {
  font-weight: 700;
  font-size: 0.72rem;
  padding: 2px 7px;
  border-radius: var(--radius-sm);
  text-transform: uppercase;
  letter-spacing: 0.04em;
  margin-left: auto;
}

.tier-color-0 {
  background: rgba(90, 138, 170, 0.15);
  color: var(--tier-history);
}

.tier-color-1 {
  background: rgba(106, 154, 106, 0.15);
  color: var(--tier-physical);
}

.tier-color-2 {
  background: rgba(200, 154, 42, 0.15);
  color: var(--tier-lab);
}

.tier-color-3 {
  background: rgba(160, 90, 114, 0.15);
  color: var(--tier-imaging);
}

.test-card-used-stamp {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%) rotate(-15deg);
  font-size: 1.4rem;
  font-weight: 900;
  color: var(--accent-info);
  opacity: 0.5;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  pointer-events: none;
  font-family: var(--font-narrative);
}

.test-card::after {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: var(--radius-card);
  background: linear-gradient(135deg, rgba(255,255,255,0.06) 0%, transparent 50%);
  pointer-events: none;
  opacity: 0;
  transition: opacity var(--transition-fast);
}

.test-card:hover::after {
  opacity: 1;
}

/* === Evidence Card (test results in log) === */
.evidence-card {
  background: var(--surface-mid);
  border: 1px solid var(--surface-light);
  border-radius: var(--radius-md);
  padding: 12px 16px;
  margin-bottom: 8px;
  animation: fadeIn var(--transition-normal) ease;
}

/* === Card Hand Layout === */
.card-hand {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 0;
  padding: 8px 0;
}

.card-hand .test-card {
  margin: 0 -6px;
  transition: transform var(--transition-card), box-shadow var(--transition-card), z-index 0s;
}

.card-hand .test-card:hover {
  transform: translateY(-16px) scale(1.04);
  z-index: 10;
}

/* ========================================
   PATIENT MONITOR
   ======================================== */
.vital-sign {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 6px 0;
  border-bottom: 1px solid var(--surface-light);
  font-size: 0.85rem;
}

.vital-sign:last-child { border-bottom: none; }

.vital-label { color: var(--text-surface-muted); font-weight: 500; }
.vital-value { font-weight: 600; font-variant-numeric: tabular-nums; color: var(--text-surface); }

.vital-warning { color: var(--accent-warning); }
.vital-critical { color: var(--accent-critical); }

.stability-bar-track {
  width: 100%;
  height: 10px;
  background: var(--surface-light);
  border-radius: 5px;
  overflow: hidden;
  margin-top: 8px;
}

.stability-bar-fill {
  height: 100%;
  border-radius: 5px;
  transition: width var(--transition-normal), background-color var(--transition-normal);
}

/* === Patient Card === */
.patient-card {
  border: 2px solid var(--surface-light);
  border-radius: var(--radius-card);
  background: var(--surface-mid);
  transition: border-color 600ms ease;
}

.patient-card-header {
  display: flex;
  align-items: center;
  gap: 8px;
  padding-bottom: 10px;
  margin-bottom: 12px;
  border-bottom: 1px solid var(--surface-light);
}

.patient-card-icon {
  font-size: 1.4rem;
  line-height: 1;
}

.patient-card-title {
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--text-surface-muted);
}

/* Avatar placeholder area */
.patient-avatar-area {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 16px;
  margin-bottom: 14px;
  background: var(--surface-dark);
  border-radius: var(--radius-md);
  border: 1px solid var(--surface-light);
}

.patient-avatar-placeholder {
  width: 72px;
  height: 72px;
  border-radius: 50%;
  background: linear-gradient(145deg, var(--surface-light), var(--surface-highlight));
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  border: 2px solid var(--surface-highlight);
}

.patient-avatar-silhouette {
  font-size: 2.2rem;
  line-height: 1;
  opacity: 0.6;
  filter: grayscale(0.3);
}

.patient-avatar-info {
  flex: 1;
}

.patient-avatar-status {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text-surface);
  font-family: var(--font-narrative);
}

.patient-stability-section {
  margin-bottom: 12px;
}

.patient-stat-label {
  font-size: 0.7rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-surface-muted);
}

.patient-stat-value {
  font-size: 0.8rem;
  font-weight: 700;
  font-variant-numeric: tabular-nums;
}

.patient-ecg-canvas {
  width: 100%;
  height: 64px;
  margin-bottom: 12px;
  border-radius: var(--radius-sm);
  background: var(--surface-dark);
  border: 1px solid var(--surface-light);
}

.patient-vitals-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4px 12px;
}

.patient-vital-item {
  display: flex;
  align-items: baseline;
  gap: 6px;
  padding: 4px 0;
  font-size: 0.8rem;
}

.patient-vital-label {
  font-weight: 500;
  color: var(--text-surface-muted);
  min-width: 32px;
}

.patient-vital-value {
  font-weight: 700;
  font-variant-numeric: tabular-nums;
  color: var(--text-surface);
}

.patient-vital-unit {
  font-size: 0.65rem;
  color: var(--text-surface-muted);
}

.patient-vital-item.vital-warning .patient-vital-value { color: var(--accent-warning); }
.patient-vital-item.vital-critical .patient-vital-value { color: var(--accent-critical); }

.patient-warning {
  border-color: var(--accent-warning);
}

.patient-critical {
  border-color: var(--accent-critical);
  animation: patientPulse 2s ease infinite;
}

@keyframes patientPulse {
  0%, 100% { box-shadow: 0 0 0 0 rgba(160, 48, 32, 0); }
  50% { box-shadow: 0 0 12px 2px rgba(160, 48, 32, 0.2); }
}

/* === Resource Panel (hidden, kept for compatibility) === */
.resource-panel {
  border: 2px solid var(--surface-light);
  border-radius: var(--radius-card);
  background: var(--surface-mid);
}

.resource-counters {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.resource-counter {
  display: flex;
  align-items: center;
  gap: 12px;
}

.resource-counter-icon {
  font-size: 1.4rem;
  line-height: 1;
  flex-shrink: 0;
}

.resource-counter-info {
  flex: 1;
  min-width: 0;
}

.resource-counter-label {
  font-size: 0.7rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-surface-muted);
  margin-bottom: 4px;
}

.resource-counter-bar {
  height: 6px;
  background: var(--surface-light);
  border-radius: 3px;
  overflow: hidden;
  margin-bottom: 2px;
}

.resource-counter-fill {
  height: 100%;
  border-radius: 3px;
  transition: width var(--transition-normal), background var(--transition-normal);
}

.resource-counter-value {
  font-size: 0.75rem;
  font-weight: 600;
  font-variant-numeric: tabular-nums;
  color: var(--text-surface);
}

.resource-counter-value[data-urgency="low"] { color: var(--accent-warning); }
.resource-counter-value[data-urgency="critical"] { color: var(--accent-critical); }

/* === Resource Bar (legacy) === */
.resource-bar {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.8rem;
}

.resource-bar-label {
  width: 60px;
  font-weight: 500;
  color: var(--text-surface-muted);
}

.resource-bar-track {
  flex: 1;
  height: 6px;
  background: var(--surface-light);
  border-radius: 3px;
  overflow: hidden;
}

.resource-bar-fill {
  height: 100%;
  border-radius: 3px;
  transition: width var(--transition-normal);
}

.resource-bar-value {
  width: 50px;
  text-align: right;
  font-weight: 600;
  font-variant-numeric: tabular-nums;
  color: var(--text-surface);
}

/* ========================================
   TEST RESULTS OVERLAY
   ======================================== */
.result-overlay {
  position: fixed;
  inset: 0;
  background: rgba(10, 8, 5, 0.6);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 100;
  animation: overlayIn 200ms ease;
}

@keyframes overlayIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

.result-flip-size {
  width: 320px;
  height: 420px;
}

.result-flip-size-visual {
  width: 420px;
  height: 560px;
}

.card-back-face,
.card-front-face {
  position: absolute;
  inset: 0;
  backface-visibility: hidden;
  border-radius: var(--radius-card);
  box-shadow: var(--shadow-card-lifted);
}

.card-back-face {
  background: linear-gradient(145deg, var(--surface-mid) 0%, var(--surface-light) 100%);
  border: 2px solid var(--surface-highlight);
  display: flex;
  align-items: center;
  justify-content: center;
}

.card-back-face.card-back-image {
  background: var(--surface-mid) url('../assets/cards/card_back.png') center/cover no-repeat;
}

.card-back-face.card-back-image.card-back-visual {
  background-image: url('../assets/cards/card_back_visual.png');
}

.patient-avatar-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: 50%;
  image-rendering: pixelated;
  image-rendering: crisp-edges;
}

.card-back-inner {
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
}

.card-back-border {
  width: calc(100% - 24px);
  height: calc(100% - 24px);
  border: 1px solid rgba(221, 208, 184, 0.15);
  border-radius: calc(var(--radius-card) - 6px);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 12px;
  background: repeating-linear-gradient(
    45deg,
    transparent,
    transparent 8px,
    rgba(221, 208, 184, 0.03) 8px,
    rgba(221, 208, 184, 0.03) 9px
  );
}

.card-back-symbol {
  font-size: 3rem;
  color: var(--text-surface-muted);
  opacity: 0.5;
  line-height: 1;
}

.card-back-label {
  font-size: 0.65rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: var(--text-surface-muted);
  opacity: 0.4;
}

.card-front-face {
  transform: rotateY(180deg);
  background: var(--card-face);
  border: 2px solid var(--border-card);
  display: flex;
  align-items: center;
  justify-content: center;
}

.result-card-inner {
  padding: 32px 24px;
  text-align: center;
  width: 100%;
}

.result-positive {
  border-left: 4px solid var(--accent-warning);
}

.result-negative {
  border-left: 4px solid var(--accent-success);
}

.result-test-name {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--text-ink-muted);
  margin-bottom: 12px;
}

.result-icon {
  font-size: 2.5rem;
  margin-bottom: 8px;
  line-height: 1;
}

.result-value {
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: 16px;
  font-family: var(--font-narrative);
}

.result-positive .result-value { color: var(--accent-warning); }
.result-negative .result-value { color: var(--accent-success); }

.result-continue-btn {
  opacity: 0;
  transition: opacity 300ms ease;
}

@keyframes cardArrival {
  from { opacity: 0; transform: scale(0.8) translateY(40px); }
  to { opacity: 1; transform: scale(1) translateY(0); }
}

/* Legacy result-card */
.result-card {
  background: var(--card-face);
  border-radius: var(--radius-card);
  border: 2px solid var(--border-card);
  box-shadow: var(--shadow-card-lifted);
  padding: 32px;
  max-width: 400px;
  width: 90%;
  text-align: center;
  color: var(--text-ink);
}

@keyframes resultSlide {
  from { opacity: 0; transform: scale(0.9) translateY(20px); }
  to { opacity: 1; transform: scale(1) translateY(0); }
}

/* === Score / Resolution === */
.score-display {
  text-align: center;
  padding: 32px;
}

.score-grade {
  font-size: 4rem;
  font-weight: 800;
  line-height: 1;
  margin-bottom: 8px;
  font-family: var(--font-narrative);
}

.score-number {
  font-size: 1.5rem;
  font-weight: 600;
  color: var(--text-surface);
}

.grade-S { color: var(--accent-warning); }
.grade-A { color: var(--accent-success); }
.grade-B { color: var(--accent-info); }
.grade-C { color: var(--text-surface-muted); }
.grade-D { color: var(--accent-warning); }
.grade-F { color: var(--accent-critical); }

/* === Main Menu === */
.case-select-card {
  background: var(--card-face);
  border: 2px solid var(--border-card);
  border-radius: var(--radius-card);
  padding: 20px;
  cursor: pointer;
  transition: all var(--transition-card);
  margin-bottom: 12px;
  box-shadow: var(--shadow-card);
  color: var(--text-ink);
  position: relative;
  overflow: hidden;
}

.case-select-card::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(255,255,255,0.05) 0%, transparent 50%);
  pointer-events: none;
}

.case-select-card:hover {
  border-color: var(--accent-info);
  box-shadow: var(--shadow-card-hover);
  transform: translateY(-4px);
}

.case-select-title {
  font-size: 1.1rem;
  font-weight: 600;
  margin-bottom: 6px;
  font-family: var(--font-narrative);
  color: var(--text-ink);
}

.case-select-complaint {
  font-size: 0.85rem;
  color: var(--text-ink-secondary);
  line-height: 1.5;
}

.case-select-difficulty {
  display: inline-block;
  font-size: 0.65rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  padding: 2px 8px;
  border-radius: var(--radius-sm);
  margin-top: 8px;
}

.difficulty-normal {
  background: var(--accent-info-bg);
  color: var(--accent-info);
}

.difficulty-hard {
  background: var(--accent-critical-bg);
  color: var(--accent-critical);
}

/* === App Footer === */
.app-footer {
  margin-top: 48px;
  padding: 20px 0 12px;
  text-align: center;
  display: flex;
  flex-direction: column;
  gap: 4px;
  font-size: 0.7rem;
  color: var(--text-surface-muted);
  opacity: 0.5;
  letter-spacing: 0.04em;
}

/* === Investigation Top Bar === */
.investigation-topbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 16px;
  padding: 0 4px;
}

.investigation-topbar-title {
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--text-surface-muted);
  opacity: 0.5;
  letter-spacing: 0.04em;
}

.investigation-topbar-title sup {
  font-size: 0.5em;
}

.btn-abandon {
  font-size: 0.75rem;
  padding: 6px 14px;
  background: transparent;
  border: 1px solid var(--surface-highlight);
  color: var(--text-surface-muted);
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: background 0.2s ease, color 0.2s ease, border-color 0.2s ease;
}

.btn-abandon:hover {
  background: var(--surface-mid);
  color: var(--text-surface);
  border-color: var(--accent-info);
}

/* === Investigation Layout === */
.investigation-layout {
  display: grid;
  grid-template-columns: 1fr 380px;
  gap: 20px;
}

.investigation-main { min-width: 0; }
.investigation-sidebar { display: flex; flex-direction: column; gap: 16px; }

/* === Tier System === */
.tier-section {
  margin-bottom: 16px;
}

.tier-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 8px;
  padding-bottom: 6px;
  border-bottom: 1px solid var(--surface-light);
}

.tier-label {
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--text-surface);
}

.tier-lock-hint {
  font-size: 0.7rem;
  color: var(--text-surface-muted);
  font-style: italic;
}

.tier-locked {
  opacity: 0.35;
  pointer-events: none;
}

.tier-locked .tier-label {
  color: var(--text-surface-muted);
}

.tier-locked .tier-header::after {
  content: '';
  display: none;
}

/* === Debrief === */
.debrief-step {
  display: flex;
  gap: 12px;
  padding: 10px 0;
  border-bottom: 1px solid var(--surface-light);
  font-size: 0.85rem;
}

.debrief-step:last-child { border-bottom: none; }

.debrief-step-number {
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: var(--surface-light);
  color: var(--text-surface);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.7rem;
  font-weight: 700;
  flex-shrink: 0;
}

.debrief-step-content { flex: 1; }

/* === Findings Log === */
.finding-entry {
  background: var(--surface-mid);
  border: 1px solid var(--surface-light);
  border-radius: var(--radius-sm);
  padding: 10px 14px;
  margin-bottom: 6px;
  animation: fadeIn var(--transition-normal) ease;
}

.finding-source {
  font-size: 0.7rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--text-surface-muted);
  margin-bottom: 4px;
}

.finding-text {
  font-size: 0.85rem;
  font-family: var(--font-narrative);
  color: var(--text-surface);
  line-height: 1.5;
}

/* === Reveal Narrative === */
.reveal-narrative {
  background: var(--accent-info-bg);
  border: 1px solid var(--accent-info);
  border-radius: var(--radius-md);
  padding: 16px;
  margin-bottom: 16px;
  animation: fadeIn 400ms ease;
}

.reveal-narrative .card-header {
  color: var(--accent-info);
  border-bottom-color: var(--accent-info);
  opacity: 0.8;
}

/* === Result Description === */
.result-description {
  font-size: 0.85rem;
  font-family: var(--font-narrative);
  color: var(--text-ink-secondary);
  line-height: 1.6;
  margin-top: 8px;
  text-align: left;
  padding: 8px 12px;
  background: var(--card-face-alt);
  border-radius: var(--radius-sm);
}

/* === Animations === */
@keyframes resultReveal {
  0% { opacity: 0; transform: scale(0.5); }
  60% { opacity: 1; transform: scale(1.1); }
  100% { opacity: 1; transform: scale(1); }
}

@keyframes pulseGlow {
  0% { box-shadow: 0 0 0 0 rgba(197, 138, 26, 0.3); }
  70% { box-shadow: 0 0 0 8px rgba(197, 138, 26, 0); }
  100% { box-shadow: 0 0 0 0 rgba(197, 138, 26, 0); }
}

.dramatic-build {
  background: rgba(10, 8, 5, 0.7);
}

.result-dots {
  font-size: 2rem;
  font-weight: 700;
  color: var(--text-ink-muted);
  letter-spacing: 0.3em;
  min-height: 3rem;
  display: flex;
  align-items: center;
  justify-content: center;
}

/* === Toast === */
.toast-error {
  position: fixed;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--accent-critical);
  color: var(--card-face);
  padding: 10px 20px;
  border-radius: var(--radius-md);
  font-size: 0.85rem;
  font-weight: 500;
  z-index: 200;
  animation: resultSlide 200ms ease;
  transition: opacity 300ms ease;
}

/* === Heat indicator === */
.diff-heat.pulse {
  animation: heatPulse 800ms ease;
}

@keyframes heatPulse {
  0% { transform: scale(1); box-shadow: 0 0 0 0 currentColor; }
  40% { transform: scale(1.4); box-shadow: 0 0 8px 2px currentColor; }
  100% { transform: scale(1); box-shadow: none; }
}

/* === Case File (Briefing) === */
.case-file {
  max-width: 700px;
  margin: 0 auto;
}

.case-file-tab {
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: var(--surface-mid);
  border: 2px solid var(--surface-light);
  border-bottom: none;
  border-radius: var(--radius-card) var(--radius-card) 0 0;
  padding: 10px 20px;
}

.case-file-tab-label {
  font-size: 0.8rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--text-surface-muted);
}

.case-file-content {
  background: var(--card-face);
  border: 2px solid var(--border-card);
  border-radius: 0 0 var(--radius-card) var(--radius-card);
  padding: 28px;
  box-shadow: var(--shadow-card);
  color: var(--text-ink);
}

.case-file-title-section {
  margin-bottom: 20px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--border-card-light);
}

.case-file-title {
  font-size: 1.6rem;
  color: var(--text-ink);
}

.case-file-meta {
  font-size: 0.85rem;
  color: var(--text-ink-muted);
  margin-top: 6px;
}

.case-file-section {
  margin-bottom: 16px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--border-card-light);
}

.case-file-section:last-of-type {
  border-bottom: none;
}

.case-file-section-header {
  font-size: 0.7rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--text-ink-muted);
  margin-bottom: 8px;
}

.case-file-hint {
  background: rgba(74, 138, 122, 0.08);
  border: 1px solid var(--accent-info);
  border-radius: var(--radius-md);
  padding: 14px 16px;
  margin-top: 16px;
}

.case-file-hint p {
  font-size: 0.85rem;
  color: var(--accent-info);
  line-height: 1.5;
}

/* === Case Card Layout (Menu) === */
.case-card-layout {
  display: flex;
  align-items: flex-start;
  gap: 16px;
}

.case-card-thumbnail-wrap {
  flex-shrink: 0;
  width: 64px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-sm);
  overflow: hidden;
  background: var(--surface-mid);
}

.case-card-thumbnail {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.case-card-icon {
  font-size: 2rem;
  line-height: 1;
  flex-shrink: 0;
  opacity: 0.8;
}

.case-card-body {
  flex: 1;
  min-width: 0;
}

/* === Responsive === */
@media (max-width: 800px) {
  .investigation-layout {
    grid-template-columns: 1fr;
  }

  .test-grid {
    grid-template-columns: 1fr;
  }

  .card-hand {
    flex-direction: column;
    align-items: stretch;
  }

  .card-hand .test-card {
    margin: 0 0 8px 0;
  }

  .card-hand .test-card:hover {
    transform: none;
  }

  .dx-board {
    grid-template-columns: 1fr;
  }

  .diff-row {
    grid-template-columns: 14px 14px 1fr auto;
    gap: 6px;
  }

  .diff-slider-wrap {
    grid-column: 1 / -1;
  }

  .patient-vitals-grid {
    grid-template-columns: 1fr;
  }

  .result-flip-size {
    width: 280px;
    height: 380px;
  }

  .result-flip-size-visual {
    width: 340px;
    height: 480px;
  }

  .result-image-area {
    width: 180px;
    height: 140px;
  }

  .deck-resources {
    flex-direction: column;
    gap: 10px;
  }

  #app {
    padding: 12px;
  }
}

/* ========================================
   VISUAL TEST IMAGE SYSTEM
   ======================================== */

/* --- Result card: visual variant --- */
.result-card-visual {
  padding: 20px 20px;
}

.result-card-visual .result-test-name {
  margin-bottom: 8px;
}

.result-card-visual .result-value {
  font-size: 1.2rem;
  margin-bottom: 4px;
}

.result-card-visual .result-description {
  font-size: 0.78rem;
  line-height: 1.45;
}

/* --- Image area inside result card --- */
.result-image-area {
  width: 240px;
  height: 200px;
  margin: 10px auto 12px;
  position: relative;
  border-radius: var(--radius-md);
  overflow: hidden;
  border: 2px solid var(--surface-highlight);
  background: rgba(0, 0, 0, 0.2);
  cursor: pointer;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.result-image-area:hover {
  border-color: var(--accent-info);
  box-shadow: 0 0 12px rgba(122, 162, 180, 0.3);
}

.result-image {
  width: 100%;
  height: 100%;
  object-fit: contain;
  display: none;
}

.result-image-placeholder {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 6px;
  background: repeating-linear-gradient(
    -45deg,
    transparent,
    transparent 6px,
    rgba(221, 208, 184, 0.04) 6px,
    rgba(221, 208, 184, 0.04) 7px
  );
  border: 2px dashed rgba(221, 208, 184, 0.15);
  border-radius: var(--radius-md);
}

.result-image-placeholder-icon {
  font-size: 2rem;
  opacity: 0.5;
  line-height: 1;
}

.result-image-placeholder-label {
  font-size: 0.7rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-surface-muted);
  opacity: 0.6;
}

.result-image-placeholder-path {
  font-size: 0.55rem;
  font-family: monospace;
  color: var(--text-ink-muted);
  opacity: 0.4;
  max-width: 200px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  text-align: center;
}

.result-image-zoom-hint {
  position: absolute;
  bottom: 4px;
  right: 6px;
  font-size: 0.6rem;
  color: var(--text-surface-muted);
  opacity: 0;
  transition: opacity 0.2s ease;
  pointer-events: none;
}

.result-image-area:hover .result-image-zoom-hint {
  opacity: 0.7;
}

/* --- Evidence log thumbnail --- */
.evidence-thumbnail-wrap {
  width: 100%;
  height: 60px;
  margin: 6px 0;
  position: relative;
  border-radius: var(--radius-sm);
  overflow: hidden;
  background: rgba(0, 0, 0, 0.15);
  border: 1px solid var(--surface-highlight);
  cursor: pointer;
  transition: border-color 0.2s ease;
}

.evidence-thumbnail-wrap:hover {
  border-color: var(--accent-info);
}

.evidence-thumbnail {
  width: 100%;
  height: 100%;
  object-fit: contain;
  display: none;
}

.evidence-thumbnail-placeholder {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  opacity: 0.4;
}

/* --- Image Lightbox --- */
.image-lightbox {
  position: fixed;
  inset: 0;
  background: rgba(5, 4, 3, 0.88);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 200;
  animation: overlayIn 200ms ease;
}

.image-lightbox-content {
  position: relative;
  max-width: 90vw;
  max-height: 90vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
}

.image-lightbox-title {
  font-size: 0.9rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--text-surface);
  text-align: center;
}

.image-lightbox-close {
  position: absolute;
  top: -12px;
  right: -12px;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  border: 1px solid var(--surface-highlight);
  background: var(--surface-dark);
  color: var(--text-surface);
  font-size: 1rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background 0.2s ease, border-color 0.2s ease;
  z-index: 201;
}

.image-lightbox-close:hover {
  background: var(--surface-mid);
  border-color: var(--accent-info);
}

.image-lightbox-img-wrap {
  max-width: 85vw;
  max-height: 80vh;
  display: flex;
  align-items: center;
  justify-content: center;
}

.image-lightbox-img {
  max-width: 85vw;
  max-height: 80vh;
  object-fit: contain;
  border-radius: var(--radius-md);
  box-shadow: 0 8px 40px rgba(0, 0, 0, 0.5);
}

.image-lightbox-missing {
  width: 400px;
  max-width: 80vw;
  padding: 40px 32px;
  background: var(--surface-mid);
  border: 2px dashed rgba(221, 208, 184, 0.2);
  border-radius: var(--radius-lg);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
  text-align: center;
}

.image-lightbox-missing-icon {
  font-size: 3rem;
  opacity: 0.5;
  line-height: 1;
}

.image-lightbox-missing-label {
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-surface);
}

.image-lightbox-missing-path {
  font-size: 0.75rem;
  font-family: monospace;
  color: var(--accent-info);
  background: rgba(0, 0, 0, 0.2);
  padding: 6px 12px;
  border-radius: var(--radius-sm);
  word-break: break-all;
}

.image-lightbox-missing-hint {
  font-size: 0.75rem;
  color: var(--text-surface-muted);
  opacity: 0.6;
  font-style: italic;
}

/* ============================
   Tutorial Overlay
   ============================ */

.tutorial-overlay {
  position: fixed;
  inset: 0;
  z-index: 10000;
  pointer-events: none;
}

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

.tutorial-overlay-fullscreen {
  background: rgba(0, 0, 0, 0.7);
  pointer-events: auto;
}

.tutorial-spotlight {
  position: fixed;
  border-radius: var(--radius-md);
  box-shadow: 0 0 0 9999px rgba(0, 0, 0, 0.65);
  z-index: 10001;
  pointer-events: none;
  transition: top 0.35s ease, left 0.35s ease, width 0.35s ease, height 0.35s ease;
}

.tutorial-tooltip {
  position: fixed;
  z-index: 10002;
  width: 380px;
  max-width: calc(100vw - 32px);
  background: var(--card-face);
  border: 2px solid var(--accent-info);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-card-lifted), 0 0 24px rgba(74, 138, 122, 0.25);
  padding: 20px 24px 16px;
  pointer-events: auto;
  animation: tutorialFadeIn 0.35s ease;
}

@keyframes tutorialFadeIn {
  from { opacity: 0; transform: translateY(8px); }
  to   { opacity: 1; transform: translateY(0); }
}

.tutorial-tooltip-title {
  font-family: var(--font-ui);
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--text-ink);
  margin-bottom: 8px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--border-card-light);
}

.tutorial-tooltip-body {
  font-family: var(--font-narrative);
  font-size: 0.9rem;
  line-height: 1.6;
  color: var(--text-ink-secondary);
}

.tutorial-tooltip-body strong {
  color: var(--text-ink);
  font-weight: 600;
}

.tutorial-tooltip-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: 16px;
  padding-top: 12px;
  border-top: 1px solid var(--border-card-light);
}

.tutorial-tooltip-btn {
  background: var(--accent-info);
  color: #fff;
  border: none;
  padding: 8px 20px;
  border-radius: var(--radius-md);
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
  transition: background var(--transition-fast), transform var(--transition-fast);
  flex-shrink: 0;
}

.tutorial-tooltip-btn:hover {
  background: #3A7A6A;
  transform: translateY(-1px);
}

.tutorial-step-indicator {
  display: flex;
  gap: 6px;
  align-items: center;
}

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

.tutorial-dot.active {
  background: var(--accent-info);
  transform: scale(1.3);
}

.tutorial-dot.done {
  background: var(--accent-success);
}

/* Tutorial button on main menu */
.btn-tutorial {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--accent-info);
  color: #fff;
  border: none;
  padding: 12px 28px;
  border-radius: var(--radius-md);
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: background var(--transition-fast), transform var(--transition-fast), box-shadow var(--transition-fast);
  box-shadow: var(--shadow-card);
}

.btn-tutorial:hover {
  background: #3A7A6A;
  transform: translateY(-2px);
  box-shadow: var(--shadow-card-hover);
}

.btn-tutorial-replay {
  background: transparent;
  border: 1px solid var(--text-surface-muted);
  color: var(--text-surface-muted);
  padding: 8px 20px;
  font-size: 0.85rem;
  box-shadow: none;
}

.btn-tutorial-replay:hover {
  border-color: var(--accent-info);
  color: var(--accent-info);
  background: rgba(74, 138, 122, 0.08);
  transform: none;
  box-shadow: none;
}

/* Tutorial difficulty badge */
.difficulty-tutorial {
  background: var(--accent-info-bg);
  color: var(--accent-info);
  border: 1px solid var(--accent-info);
}

@media (max-width: 600px) {
  .tutorial-tooltip {
    width: calc(100vw - 32px);
    padding: 16px;
  }
}