/* ==========================================================================
   PlayToThe.Win — Horizon v3 Canonical Design System (Task H05 / Gemini 3.8 Flash)
   Zero external runtime dependency · 4 Themes · WCAG 2.2 AA/AAA · >=44px Touch
   ========================================================================== */

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

:root,
html[data-theme="orbit"],
html[data-theme="dark"] {
  color-scheme: dark;
  --ptw-bg: #08111a;
  --ptw-bg-elevated: #0d1824;
  --ptw-topbar: rgba(10, 20, 31, 0.88);
  --ptw-surface: rgba(17, 30, 43, 0.86);
  --ptw-surface-solid: #111e2b;
  --ptw-surface-2: #172838;
  --ptw-surface-hover: #1f3549;
  --ptw-border: rgba(255, 255, 255, 0.08);
  --ptw-border-strong: rgba(255, 255, 255, 0.16);
  --ptw-blur: 12px;
  --ptw-text: #f1f7fb;
  --ptw-text-secondary: #c6d6e4;
  --ptw-muted: #8ea3b7;
  --ptw-accent: #5ce1e6;
  --ptw-accent-soft: rgba(92, 225, 230, 0.14);
  --ptw-on-accent: #041922;
  --ptw-good: #34d399;
  --ptw-good-soft: rgba(52, 211, 153, 0.14);
  --ptw-warn: #fbbf24;
  --ptw-warn-soft: rgba(251, 191, 36, 0.14);
  --ptw-danger: #fb7185;
  --ptw-danger-soft: rgba(251, 113, 133, 0.14);
  --ptw-hero-glow: radial-gradient(circle at 82% 24%, rgba(92, 225, 230, 0.16), transparent 56%);
  --ptw-shadow: 0 16px 40px rgba(0, 0, 0, 0.36);
  --ptw-font-sans: Inter, system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --ptw-font-display: var(--ptw-font-sans);
  --ptw-target-min: 44px;
  --ptw-r-sm: 10px;
  --ptw-r-md: 14px;
  --ptw-r-lg: 20px;
  --ptw-max-w: 1320px;

  /* Backward-compatible aliases for legacy modules */
  --bg: var(--ptw-bg);
  --panel: var(--ptw-surface-solid);
  --panel2: var(--ptw-surface-2);
  --surface: var(--ptw-surface-solid);
  --surface-card: var(--ptw-surface-2);
  --border: var(--ptw-border);
  --line: var(--ptw-border);
  --text: var(--ptw-text);
  --muted: var(--ptw-muted);
  --accent: var(--ptw-accent);
  --good: var(--ptw-good);
  --warn: var(--ptw-warn);
  --danger: var(--ptw-danger);
}

html[data-theme="atlas"],
html[data-theme="light"] {
  color-scheme: light;
  --ptw-bg: #f5f2eb;
  --ptw-bg-elevated: #fbf9f4;
  --ptw-topbar: rgba(249, 246, 239, 0.92);
  --ptw-surface: rgba(255, 253, 249, 0.94);
  --ptw-surface-solid: #fffdf9;
  --ptw-surface-2: #ede7dc;
  --ptw-surface-hover: #e3dccf;
  --ptw-border: rgba(36, 38, 58, 0.11);
  --ptw-border-strong: rgba(36, 38, 58, 0.22);
  --ptw-text: #1e2132;
  --ptw-text-secondary: #3b4059;
  --ptw-muted: #646982;
  --ptw-accent: #5b3fd6;
  --ptw-accent-soft: rgba(91, 63, 214, 0.11);
  --ptw-on-accent: #ffffff;
  --ptw-good: #0f766e;
  --ptw-good-soft: rgba(15, 118, 110, 0.12);
  --ptw-warn: #b45309;
  --ptw-warn-soft: rgba(180, 83, 9, 0.12);
  --ptw-danger: #be123c;
  --ptw-danger-soft: rgba(190, 18, 60, 0.11);
  --ptw-hero-glow: radial-gradient(circle at 82% 24%, rgba(91, 63, 214, 0.12), transparent 58%);
  --ptw-shadow: 0 12px 30px rgba(34, 36, 56, 0.08);
  --ptw-font-display: Georgia, "Times New Roman", serif;
}

html[data-theme="pulse"] {
  color-scheme: dark;
  --ptw-bg: #110c1c;
  --ptw-bg-elevated: #181128;
  --ptw-topbar: rgba(20, 14, 34, 0.90);
  --ptw-surface: rgba(30, 21, 48, 0.88);
  --ptw-surface-solid: #1e1530;
  --ptw-surface-2: #2b1e43;
  --ptw-surface-hover: #372756;
  --ptw-border: rgba(255, 176, 103, 0.15);
  --ptw-border-strong: rgba(255, 176, 103, 0.28);
  --ptw-text: #fdf7fb;
  --ptw-text-secondary: #e4d5eb;
  --ptw-muted: #b49ec2;
  --ptw-accent: #ffb067;
  --ptw-accent-soft: rgba(255, 176, 103, 0.16);
  --ptw-on-accent: #24111c;
  --ptw-good: #4adeb8;
  --ptw-good-soft: rgba(74, 222, 184, 0.14);
  --ptw-warn: #f472b6;
  --ptw-warn-soft: rgba(244, 114, 182, 0.16);
  --ptw-danger: #fb7185;
  --ptw-danger-soft: rgba(251, 113, 133, 0.16);
  --ptw-hero-glow: radial-gradient(circle at 82% 20%, rgba(244, 114, 182, 0.22), rgba(255, 176, 103, 0.08) 42%, transparent 68%);
  --ptw-shadow: 0 18px 44px rgba(5, 2, 12, 0.52);
}

html[data-theme="high_contrast"] {
  color-scheme: dark;
  --ptw-bg: #000000;
  --ptw-bg-elevated: #000000;
  --ptw-topbar: #000000;
  --ptw-surface: #000000;
  --ptw-surface-solid: #000000;
  --ptw-surface-2: #0a0a0a;
  --ptw-surface-hover: #1a1a1a;
  --ptw-border: #ffffff;
  --ptw-border-strong: #ffffff;
  --ptw-blur: 0px;
  --ptw-text: #ffffff;
  --ptw-text-secondary: #ffffff;
  --ptw-muted: #e5e5e5;
  --ptw-accent: #ffe600;
  --ptw-accent-soft: rgba(255, 230, 0, 0.22);
  --ptw-on-accent: #000000;
  --ptw-good: #5effa3;
  --ptw-good-soft: rgba(94, 255, 163, 0.2);
  --ptw-warn: #ffe600;
  --ptw-warn-soft: rgba(255, 230, 0, 0.2);
  --ptw-danger: #ff6b81;
  --ptw-danger-soft: rgba(251, 107, 129, 0.2);
  --ptw-hero-glow: none;
  --ptw-shadow: none;
}

/* ==========================================================================
   FORM GUARD: Checkboxes and radios are strictly 20x20px and never stretched
   ========================================================================== */
input:not([type="checkbox"]):not([type="radio"]):not([type="range"]),
select, textarea {
  width: 100%;
  min-height: var(--ptw-target-min, 44px);
  padding: 10px 14px;
  border-radius: var(--ptw-r-sm, 10px);
  border: 1px solid var(--ptw-border-strong);
  background: var(--ptw-bg-elevated);
  color: var(--ptw-text);
  font: inherit;
}

input[type="checkbox"],
input[type="radio"] {
  width: 20px;
  height: 20px;
  min-height: 20px;
  flex: none;
  accent-color: var(--ptw-accent);
  cursor: pointer;
  margin: 0;
}

/* Tap Target Enforcer: labels wrapping checkboxes get >=44px */
.check-list label,
label:has(input[type="checkbox"]),
label:has(input[type="radio"]) {
  min-height: var(--ptw-target-min, 44px);
  display: inline-flex;
  align-items: center;
  gap: 10px;
  cursor: pointer;
}

/* ==========================================================================
   28 CANONICAL SEMANTIC COMPONENTS (.ptw-*)
   ========================================================================== */

/* 1. Shell & Container */
.ptw-shell {
  max-width: var(--ptw-max-w);
  margin: 0 auto;
  padding: 24px 20px 80px;
}

/* 2. Topbar */
.ptw-topbar {
  position: sticky;
  top: 0;
  z-index: 30;
  background: var(--ptw-topbar);
  backdrop-filter: blur(var(--ptw-blur));
  border-bottom: 1px solid var(--ptw-border);
}
.ptw-topbar-inner {
  max-width: var(--ptw-max-w);
  margin: 0 auto;
  padding: 10px 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

/* 3. Navigation */
.ptw-nav {
  display: flex;
  align-items: center;
  gap: 6px;
}
.ptw-nav a, .ptw-nav button {
  min-height: var(--ptw-target-min, 44px);
  padding: 8px 14px;
  border-radius: var(--ptw-r-sm, 10px);
  border: 1px solid transparent;
  background: transparent;
  color: var(--ptw-muted);
  font-weight: 700;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  transition: all 0.15s ease;
}
.ptw-nav a:hover, .ptw-nav button:hover {
  color: var(--ptw-text);
  background: var(--ptw-surface-2);
}
.ptw-nav a[aria-current="page"], .ptw-nav button[aria-current="page"] {
  color: var(--ptw-text);
  background: var(--ptw-accent-soft);
  border-color: var(--ptw-border-strong);
}

/* 4. Omnibox Button */
.ptw-omnibox-btn {
  min-height: var(--ptw-target-min, 44px);
  padding: 8px 14px;
  border-radius: var(--ptw-r-sm, 10px);
  border: 1px solid var(--ptw-border);
  background: var(--ptw-surface-solid);
  color: var(--ptw-muted);
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 13px;
  cursor: pointer;
  flex-shrink: 0;
}

.ptw-tools {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-shrink: 0;
}
.ptw-tools > * {
  flex-shrink: 0;
}
.ptw-select-lang, select#language {
  width: auto;
  max-width: 160px;
  min-height: var(--ptw-target-min, 44px);
  min-width: 44px;
  box-sizing: border-box;
}

/* 5. Mobile Dock */
.ptw-mobile-dock {
  display: none;
}

/* 6. Subtabs */
.ptw-subtabs {
  display: flex;
  gap: 8px;
  border-bottom: 1px solid var(--ptw-border);
  padding-bottom: 10px;
  margin: 20px 0;
  overflow-x: auto;
}
.ptw-subtabs button, .ptw-subtabs a {
  min-height: var(--ptw-target-min, 44px);
  padding: 8px 16px;
  border-radius: var(--ptw-r-sm, 10px);
  border: 1px solid transparent;
  background: transparent;
  color: var(--ptw-muted);
  font-weight: 800;
  white-space: nowrap;
  text-decoration: none;
}
.ptw-subtabs button.active, .ptw-subtabs a.active, .ptw-subtabs button[aria-selected="true"] {
  background: var(--ptw-surface-2);
  color: var(--ptw-accent);
  border-color: var(--ptw-border-strong);
}

/* 7. Layout Split */
.ptw-layout-split {
  display: grid;
  grid-template-columns: minmax(0, 1.85fr) minmax(320px, 0.95fr);
  gap: 20px;
  align-items: start;
}

/* 8. Grid 3 */
.ptw-grid-3 {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
}

/* 9. Grid 4 */
.ptw-grid-4 {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 16px;
}

/* 10. Card */
.ptw-card {
  background: var(--ptw-surface);
  backdrop-filter: blur(var(--ptw-blur));
  border: 1px solid var(--ptw-border);
  border-radius: var(--ptw-r-lg, 20px);
  padding: 22px;
  box-shadow: var(--ptw-shadow);
}

/* 11. Card Subtle */
.ptw-card-subtle {
  background: var(--ptw-surface-2);
  border: 1px solid var(--ptw-border);
  border-radius: var(--ptw-r-md, 14px);
  padding: 16px;
}

/* 12. Primary Button */
.ptw-btn-primary {
  min-height: var(--ptw-target-min, 44px);
  min-width: var(--ptw-target-min, 44px);
  padding: 10px 18px;
  border-radius: var(--ptw-r-sm, 10px);
  font-weight: 800;
  font-size: 14px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  border: 1px solid var(--ptw-accent);
  background: var(--ptw-accent);
  color: var(--ptw-on-accent);
  text-decoration: none;
  cursor: pointer;
  transition: filter 0.15s ease;
}
.ptw-btn-primary:hover { filter: brightness(1.08); }

/* 13. Secondary Button */
.ptw-btn-secondary {
  min-height: var(--ptw-target-min, 44px);
  min-width: var(--ptw-target-min, 44px);
  padding: 10px 18px;
  border-radius: var(--ptw-r-sm, 10px);
  font-weight: 800;
  font-size: 14px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  border: 1px solid var(--ptw-border-strong);
  background: var(--ptw-surface-2);
  color: var(--ptw-text);
  text-decoration: none;
  cursor: pointer;
  transition: border-color 0.15s ease;
}
.ptw-btn-secondary:hover { border-color: var(--ptw-accent); }

/* 14. Ghost Button */
.ptw-btn-ghost {
  min-height: var(--ptw-target-min, 44px);
  min-width: var(--ptw-target-min, 44px);
  padding: 10px 18px;
  border-radius: var(--ptw-r-sm, 10px);
  font-weight: 700;
  font-size: 14px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  border: 1px solid var(--ptw-border);
  background: transparent;
  color: var(--ptw-text-secondary);
  text-decoration: none;
  cursor: pointer;
}

/* 15. Chip */
.ptw-chip {
  min-height: var(--ptw-target-min, 44px);
  padding: 8px 14px;
  border-radius: 999px;
  border: 1px solid var(--ptw-border-strong);
  background: var(--ptw-surface-solid);
  color: var(--ptw-text-secondary);
  font-weight: 700;
  font-size: 13px;
  display: inline-flex;
  align-items: center;
  gap: 7px;
  cursor: pointer;
}
.ptw-chip[aria-pressed="true"], .ptw-chip.active {
  background: var(--ptw-accent-soft);
  color: var(--ptw-accent);
  border-color: var(--ptw-accent);
}

/* 16. Hero Decision */
.ptw-hero-decision {
  background: var(--ptw-hero-glow), var(--ptw-surface);
  border: 1px solid var(--ptw-border-strong);
  border-radius: var(--ptw-r-lg, 20px);
  padding: 24px;
  display: grid;
  grid-template-columns: 168px minmax(0, 1fr);
  gap: 24px;
  align-items: center;
}

/* 17. 3D Cover with Spine */
.ptw-cover-3d {
  width: 100%;
  aspect-ratio: 3 / 4;
  border-radius: 6px 12px 12px 6px;
  overflow: hidden;
  position: relative;
  box-shadow: -8px 14px 28px rgba(0, 0, 0, 0.45);
  border: 1px solid rgba(255, 255, 255, 0.16);
  border-left: 6px solid rgba(255, 255, 255, 0.24);
  background: #132232;
}
.ptw-cover-3d img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

/* 18. Game Card */
.ptw-game-card {
  background: var(--ptw-surface);
  border: 1px solid var(--ptw-border);
  border-radius: var(--ptw-r-md, 14px);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: transform 0.16s ease, border-color 0.16s ease;
}
.ptw-game-card:hover {
  transform: translateY(-2px);
  border-color: var(--ptw-border-strong);
}

/* 19. Resume Meter (1-5 difficulty) */
.ptw-resume-meter {
  display: inline-flex;
  align-items: center;
  gap: 4px;
}
.ptw-resume-dot {
  width: 8px;
  height: 14px;
  border-radius: 3px;
  background: var(--ptw-border-strong);
}
.ptw-resume-dot.filled {
  background: var(--ptw-accent);
}

/* 20. Passport Grid */
.ptw-passport-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 16px;
  margin: 20px 0;
}

/* 21. Evidence Pill */
.ptw-evidence-pill {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 10px;
  border-radius: 999px;
  font-size: 12px;
  font-weight: 750;
  background: var(--ptw-surface-2);
  color: var(--ptw-text-secondary);
  border: 1px solid var(--ptw-border);
}

/* 22. Offer Table */
.ptw-offer-table {
  width: 100%;
  border-collapse: collapse;
  margin: 16px 0;
}
.ptw-offer-table th, .ptw-offer-table td {
  padding: 12px 14px;
  text-align: left;
  border-bottom: 1px solid var(--ptw-border);
}

/* 23. Compare Tray */
.ptw-compare-tray {
  position: fixed;
  bottom: 20px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 40;
  background: var(--ptw-topbar);
  backdrop-filter: blur(16px);
  border: 1px solid var(--ptw-accent);
  border-radius: 16px;
  padding: 10px 18px;
  display: flex;
  align-items: center;
  gap: 16px;
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.55);
}

/* 24. Companion Drawer */
.ptw-companion-drawer {
  background: var(--ptw-surface);
  border: 1px solid var(--ptw-border);
  border-radius: var(--ptw-r-lg, 20px);
  padding: 20px;
}

/* 25. Hint Ladder (3-step) */
.ptw-hint-ladder {
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.ptw-hint-step {
  border: 1px solid var(--ptw-border);
  background: var(--ptw-surface-2);
  border-radius: var(--ptw-r-md, 14px);
  padding: 13px 15px;
}
.ptw-hint-step.unlocked {
  border-color: var(--ptw-accent);
  background: var(--ptw-accent-soft);
}

/* 26. Milestone Bar */
.ptw-milestone-bar {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 12px 0;
}

/* 27. Time Capsule (🔒 Together 2.0) */
.ptw-time-capsule {
  border: 1px dashed var(--ptw-warn);
  background: var(--ptw-warn-soft);
  border-radius: var(--ptw-r-md, 14px);
  padding: 16px;
}
.ptw-time-capsule.unlocked {
  border-style: solid;
  border-color: var(--ptw-good);
  background: var(--ptw-good-soft);
}

/* 28. Bipolar Want / Avoid Chips & States */
.ptw-chip[data-polarity="want"] {
  background: var(--ptw-good-soft);
  color: var(--ptw-good);
  border-color: rgba(52, 211, 153, 0.35);
}
.ptw-chip[data-polarity="avoid"] {
  background: var(--ptw-danger-soft);
  color: var(--ptw-danger);
  border-color: rgba(251, 113, 133, 0.35);
}
.ptw-state-empty {
  border: 1px dashed var(--ptw-border-strong);
  border-radius: var(--ptw-r-md, 14px);
  padding: 32px 20px;
  text-align: center;
  color: var(--ptw-muted);
}
.ptw-state-stale {
  border-left: 4px solid var(--ptw-warn);
  background: var(--ptw-warn-soft);
}
.ptw-skeleton {
  background: linear-gradient(90deg, var(--ptw-surface-2) 25%, var(--ptw-surface-hover) 50%, var(--ptw-surface-2) 75%);
  background-size: 200% 100%;
  animation: ptw-shimmer 1.5s infinite;
  border-radius: var(--ptw-r-sm, 10px);
}
@keyframes ptw-shimmer {
  0% { background-position: 200% 0; }
  100% { background-position: -200% 0; }
}

/* ==========================================================================
   RESPONSIVE BREAKPOINTS: <640px (Mobile), 640-1024px (Tablet), >1024px (Desktop)
   ========================================================================== */
@media (max-width: 1024px) {
  .ptw-layout-split, .ptw-grid-4 {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .ptw-passport-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 820px) {
  .ptw-nav { display: none; }
  .ptw-mobile-dock {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    position: fixed;
    bottom: 0; left: 0; right: 0;
    z-index: 35;
    background: var(--ptw-topbar);
    backdrop-filter: blur(14px);
    border-top: 1px solid var(--ptw-border);
    padding: 4px 6px env(safe-area-inset-bottom, 6px);
  }
  .ptw-mobile-dock button, .ptw-mobile-dock a {
    min-height: 50px;
    border: 0;
    background: transparent;
    color: var(--ptw-muted);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 3px;
    font-size: 11px;
    font-weight: 750;
    text-decoration: none;
  }
  .ptw-mobile-dock button.active, .ptw-mobile-dock a.active {
    color: var(--ptw-accent);
  }
}

@media (max-width: 640px) {
  .ptw-omnibox-btn .ptw-omnibox-label,
  .ptw-omnibox-btn .ptw-kbd {
    display: none;
  }
  .ptw-shell { padding: 16px 14px 84px; }
  .ptw-layout-split, .ptw-grid-3, .ptw-grid-4, .ptw-passport-grid {
    grid-template-columns: 1fr;
  }
  .ptw-hero-decision {
    grid-template-columns: 96px minmax(0, 1fr);
    gap: 14px;
    padding: 16px;
  }
}

/* 21. Brand Logo & Topbar Links */
.ptw-brand-logo {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  min-height: var(--ptw-target-min, 44px);
  min-width: 44px;
  text-decoration: none;
  color: var(--ptw-text);
  font-weight: 800;
  font-size: 18px;
  letter-spacing: -0.02em;
}
.ptw-logo-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--ptw-accent);
  box-shadow: 0 0 10px var(--ptw-accent);
}
.ptw-nav-link {
  min-height: var(--ptw-target-min, 44px);
  padding: 8px 14px;
  border-radius: var(--ptw-r-sm, 10px);
  border: 1px solid transparent;
  background: transparent;
  color: var(--ptw-muted);
  font-weight: 700;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  transition: all 0.15s ease;
}
.ptw-nav-link:hover {
  color: var(--ptw-text);
  background: var(--ptw-surface-2);
}
.ptw-nav-link.active, .ptw-nav-link[aria-current="page"] {
  color: var(--ptw-text);
  background: var(--ptw-accent-soft);
  border-color: var(--ptw-border-strong);
}

/* 22. Quick Navigation Palette (Ctrl+K) */
.ptw-palette-overlay {
  position: fixed;
  inset: 0;
  z-index: 100;
  background: rgba(0, 0, 0, 0.65);
  backdrop-filter: blur(8px);
  display: flex;
  align-items: flex-start;
  justify-content: center;
  padding: 90px 16px 24px;
}
.ptw-palette-dialog {
  width: 100%;
  max-width: 580px;
  background: var(--ptw-surface-solid);
  border: 1px solid var(--ptw-border-strong);
  border-radius: var(--ptw-r-lg, 16px);
  box-shadow: 0 20px 48px rgba(0, 0, 0, 0.5);
  overflow: hidden;
  display: flex;
  flex-direction: column;
}
.ptw-palette-header {
  padding: 12px 18px;
  display: flex;
  align-items: center;
  gap: 12px;
  border-bottom: 1px solid var(--ptw-border);
}
.ptw-palette-input {
  flex: 1;
  background: transparent;
  border: 0;
  color: var(--ptw-text);
  font-size: 15px;
  font-family: inherit;
  outline: none;
}
.ptw-palette-list {
  list-style: none;
  margin: 0;
  padding: 8px;
  max-height: 340px;
  overflow-y: auto;
}
.ptw-palette-item {
  padding: 10px 14px;
  border-radius: var(--ptw-r-sm, 10px);
  display: flex;
  align-items: center;
  justify-content: space-between;
  color: var(--ptw-text-secondary);
  text-decoration: none;
  cursor: pointer;
  transition: background 0.12s ease;
  min-height: 44px;
}
.ptw-palette-item:hover, .ptw-palette-item.is-selected {
  background: var(--ptw-surface-hover);
  color: var(--ptw-text);
}
.ptw-palette-item.is-selected {
  outline: 2px solid var(--ptw-accent);
}
.ptw-palette-footer {
  padding: 8px 18px;
  border-top: 1px solid var(--ptw-border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 12px;
  color: var(--ptw-muted);
}

/* 23. Lightweight Offline Utility Compatibility Layer */
.flex { display: flex; }
.inline-flex { display: inline-flex; }
.grid { display: grid; }
.hidden { display: none !important; }
.block { display: block; }
.inline-block { display: inline-block; }
.items-center { align-items: center; }
.items-start { align-items: flex-start; }
.justify-between { justify-content: space-between; }
.justify-center { justify-content: center; }
.justify-end { justify-content: flex-end; }
.flex-col { flex-direction: column; }
.flex-1 { flex: 1 1 0%; }
.flex-wrap { flex-wrap: wrap; }
.w-full { width: 100%; }
.h-full { height: 100%; }
.relative { position: relative; }
.absolute { position: absolute; }
.fixed { position: fixed; }
.sticky { position: sticky; }
.inset-0 { inset: 0; }
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }
.font-bold { font-weight: 700; }
.font-semibold { font-weight: 600; }
.font-medium { font-weight: 500; }
.truncate { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.overflow-hidden { overflow: hidden; }
.overflow-x-hidden { overflow-x: hidden; }
.cursor-pointer { cursor: pointer; }
.gap-1 { gap: 4px; }
.gap-2 { gap: 8px; }
.gap-3 { gap: 12px; }
.gap-4 { gap: 16px; }
.gap-6 { gap: 24px; }
.gap-8 { gap: 32px; }
.rounded-lg { border-radius: 8px; }
.rounded-xl { border-radius: 12px; }
.rounded-2xl { border-radius: 16px; }
.rounded-full { border-radius: 9999px; }
.transition-colors { transition-property: color, background-color, border-color; transition-duration: 150ms; }
.transition-all { transition-property: all; transition-duration: 150ms; }

/* Accessibility */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}

/* ==========================================================================
   LANDING, ADMIN & MODAL HORIZON V3 CANONICAL EXTENSIONS
   ========================================================================== */

/* Landing Hero Section */
.ptw-landing-hero {
  text-align: center;
  padding: 48px 20px 60px;
  position: relative;
  overflow: hidden;
}
.ptw-hero-title {
  font-size: clamp(26px, 4.5vw, 52px);
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1.15;
  margin: 0 auto 16px;
  max-width: 860px;
  color: var(--ptw-text);
}
.ptw-hero-title span {
  color: var(--ptw-accent);
}
.ptw-hero-subtitle {
  font-size: clamp(14px, 1.8vw, 16px);
  line-height: 1.6;
  color: var(--ptw-muted);
  max-width: 640px;
  margin: 0 auto 24px;
}
.ptw-hero-actions {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  flex-wrap: wrap;
  margin-bottom: 36px;
}
.ptw-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 14px;
  border-radius: 999px;
  background: var(--ptw-surface-2);
  border: 1px solid var(--ptw-border-strong);
  font-size: 12px;
  font-weight: 700;
  color: var(--ptw-text-secondary);
  margin-bottom: 20px;
}
.ptw-badge-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--ptw-good);
  box-shadow: 0 0 8px var(--ptw-good);
}

/* Canonical Section Container & Headers */
.ptw-section {
  padding: 56px 0;
  border-top: 1px solid var(--ptw-border);
}
.ptw-section-header {
  text-align: center;
  max-width: 640px;
  margin: 0 auto 36px;
}
.ptw-section-title {
  font-size: clamp(22px, 3.2vw, 32px);
  font-weight: 800;
  color: var(--ptw-text);
  margin-bottom: 8px;
}
.ptw-section-subtitle {
  font-size: 14px;
  color: var(--ptw-muted);
  line-height: 1.5;
}
.ptw-grid-2 {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 20px;
}
@media (max-width: 768px) {
  .ptw-grid-2 {
    grid-template-columns: 1fr;
  }
}

/* Modals & Bottom Sheets */
.ptw-modal-overlay {
  position: fixed;
  inset: 0;
  z-index: 50;
  background: rgba(0, 0, 0, 0.78);
  backdrop-filter: blur(var(--ptw-blur, 12px));
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 16px;
  overflow-y: auto;
}
.ptw-modal-dialog {
  width: 100%;
  max-width: 520px;
  background: var(--ptw-surface-solid);
  border: 1px solid var(--ptw-border-strong);
  border-radius: var(--ptw-r-lg, 20px);
  padding: 28px;
  box-shadow: var(--ptw-shadow);
  position: relative;
  max-height: 90vh;
  overflow-y: auto;
}
.ptw-sheet-handle {
  width: 48px;
  height: 6px;
  border-radius: 999px;
  background: var(--ptw-border-strong);
  margin: 0 auto 16px;
  cursor: grab;
  display: none;
}
@media (max-width: 640px) {
  .ptw-modal-overlay {
    align-items: flex-end;
    padding: 0;
  }
  .ptw-modal-dialog {
    max-width: 100%;
    border-radius: 24px 24px 0 0;
    max-height: 92vh;
    padding: 20px 18px calc(24px + env(safe-area-inset-bottom, 0px));
  }
  .ptw-sheet-handle {
    display: block;
  }
}

/* Form controls */
.ptw-form-group {
  margin-bottom: 14px;
  text-align: left;
}
.ptw-form-label {
  display: block;
  font-size: 13px;
  font-weight: 700;
  color: var(--ptw-text-secondary);
  margin-bottom: 6px;
}
.ptw-input {
  width: 100%;
  min-height: var(--ptw-target-min, 44px);
  padding: 10px 14px;
  border-radius: var(--ptw-r-sm, 10px);
  border: 1px solid var(--ptw-border-strong);
  background: var(--ptw-bg-elevated);
  color: var(--ptw-text);
  font: inherit;
  font-size: 14px;
  transition: border-color 0.15s ease;
}
.ptw-input:focus {
  outline: none;
  border-color: var(--ptw-accent);
}

/* Landing Footer */
.ptw-footer {
  border-top: 1px solid var(--ptw-border);
  padding: 32px 20px 88px;
  background: var(--ptw-surface-solid);
  font-size: 13px;
  color: var(--ptw-muted);
}
.ptw-footer-inner {
  max-width: var(--ptw-max-w);
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  flex-wrap: wrap;
}

/* =============================================================================
   ACCESSIBILITY & TOUCH TARGET ENFORCEMENT (V4-R8.07 / Stage 18.04 / WCAG 2.1 AA)
   ============================================================================= */

/* Universal primary touch target minimum (44x44px) across all interactive elements */
button,
input[type="button"],
input[type="submit"],
input[type="reset"],
.button,
.btn,
.tag,
a.tag,
button.tag,
.hours-btn,
.library-filter-tab,
.chart-view-switch button,
.ptw-callout-close,
.omnibox-close-btn,
dialog .close,
.btn-compare-toggle,
.ptw-compare-card-remove,
.activity-game-pill,
.mobile-dock a {
  min-height: 44px;
  min-width: 44px;
  box-sizing: border-box;
}

/* Specific remediation for the 7 historical selectors measured at 18-38px */
#companion-style-chips button,
#companion-goal-chips button,
#companion-milestone-chips button {
  min-height: 44px;
  min-width: 44px;
  padding: 10px 16px;
}

.chart-view-switch button {
  min-height: 44px;
  min-width: 44px;
  padding: 10px 14px;
}

.hours-btn {
  min-height: 44px;
  min-width: 44px;
  padding: 10px 14px;
}

.library-filter-tab {
  min-height: 44px;
  padding: 10px 16px;
}

.ptw-callout-close,
dialog .close,
.ptw-compare-card-remove {
  min-height: 44px;
  min-width: 44px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.btn-compare-toggle {
  min-height: 44px;
  padding: 10px 14px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.omnibox-close-btn,
.omnibox-input {
  min-height: 44px;
}

/* High-contrast visible focus outline */
:focus-visible {
  outline: 2px solid var(--ptw-accent, #6366f1) !important;
  outline-offset: 2px !important;
}

/* Respect user's motion preferences */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}