/**
 * Mai Read: Interactive Tour Guide & Warm Welcome Notification
 * Conforming strictly to MAI-READS-UI-SPEC and Apple Liquid Glass design tokens.
 * Zero external libraries, zero layout shifts, 100% accessible (WCAG AA).
 * Full 14-Language Multilingual Support & Adaptive Mobile Ergonomics.
 */

/* ── 1. Fullscreen Interactive Tour Overlay ───────────────────────────────── */
.mai-tour-overlay {
  position: fixed;
  inset: 0;
  z-index: 99990;
  pointer-events: none;
  opacity: 0;
  visibility: hidden;
  transition: opacity 280ms cubic-bezier(0.16, 1, 0.3, 1), visibility 280ms cubic-bezier(0.16, 1, 0.3, 1);
}

.mai-tour-overlay.is-active {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
}

.mai-tour-mask-svg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
}

/* Target Spotlight Ring with Breathing Glow */
.mai-tour-spotlight-ring {
  position: fixed;
  border: 2px solid var(--accent, #B5792F);
  border-radius: var(--tour-target-radius, 14px);
  box-shadow: 0 0 0 4px var(--accent-soft, rgba(181, 121, 47, 0.2)), 0 0 32px rgba(181, 121, 47, 0.35);
  pointer-events: none;
  z-index: 99991;
  transition: all 300ms cubic-bezier(0.16, 1, 0.3, 1);
  will-change: top, left, width, height, border-radius;
}

/* ── 2. Tour Popover Tooltip Card ─────────────────────────────────────────── */
.mai-tour-popover {
  position: fixed;
  width: 390px;
  max-width: calc(100vw - 28px);
  background: var(--surface, #FFFFFF);
  background: var(--liquid-glass-bg, rgba(255, 255, 255, 0.94));
  backdrop-filter: var(--liquid-blur, blur(28px) saturate(190%));
  -webkit-backdrop-filter: var(--liquid-blur, blur(28px) saturate(190%));
  border: 1px solid var(--liquid-glass-border, rgba(0, 0, 0, 0.12));
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.28), 0 1px 3px rgba(0, 0, 0, 0.1);
  border-radius: 20px;
  padding: 20px 22px;
  z-index: 99995;
  display: flex;
  flex-direction: column;
  gap: 12px;
  opacity: 0;
  transform: translateY(10px) scale(0.98);
  pointer-events: auto;
  transition: opacity 260ms cubic-bezier(0.16, 1, 0.3, 1), transform 260ms cubic-bezier(0.16, 1, 0.3, 1), top 280ms cubic-bezier(0.16, 1, 0.3, 1), left 280ms cubic-bezier(0.16, 1, 0.3, 1);
  box-sizing: border-box;
}

[data-resolved-theme="dark"] .mai-tour-popover {
  background: rgba(26, 26, 28, 0.95);
  border-color: rgba(255, 255, 255, 0.14);
  box-shadow: 0 24px 60px rgba(0, 0, 0, 0.7), 0 1px 3px rgba(255, 255, 255, 0.05);
}

[data-resolved-theme="sepia"] .mai-tour-popover {
  background: rgba(251, 246, 234, 0.96);
  border-color: rgba(226, 211, 181, 0.8);
}

.mai-tour-popover.is-positioned {
  opacity: 1;
  transform: translateY(0) scale(1);
}

/* Directional Arrow */
.mai-tour-arrow {
  position: absolute;
  width: 14px;
  height: 14px;
  background: inherit;
  border: inherit;
  transform: rotate(45deg);
  pointer-events: none;
}

.mai-tour-popover[data-placement="bottom"] .mai-tour-arrow {
  top: -8px;
  border-bottom: none;
  border-right: none;
}

.mai-tour-popover[data-placement="top"] .mai-tour-arrow {
  bottom: -8px;
  border-top: none;
  border-left: none;
}

.mai-tour-popover[data-placement="right"] .mai-tour-arrow {
  left: -8px;
  border-top: none;
  border-right: none;
}

.mai-tour-popover[data-placement="left"] .mai-tour-arrow {
  right: -8px;
  border-bottom: none;
  border-left: none;
}

.mai-tour-popover[data-placement="center"] .mai-tour-arrow,
.mai-tour-popover[data-placement="mobile-top"] .mai-tour-arrow,
.mai-tour-popover[data-placement="mobile-bottom"] .mai-tour-arrow {
  display: none !important;
}

/* Popover Content Structure */
.mai-tour-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  position: relative;
}

.mai-tour-header-left {
  display: flex;
  align-items: center;
  gap: 8px;
  min-width: 0;
  flex: 1;
}

.mai-tour-header-right {
  display: flex;
  align-items: center;
  gap: 6px;
  flex-shrink: 0;
}

.mai-tour-step-pill {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 3px 9px;
  background: var(--surface-2, #F1EFE8);
  border: 1px solid var(--line, #E3E0D6);
  border-radius: var(--radius-pill, 999px);
  font-size: 11px;
  font-weight: 600;
  color: var(--accent, #B5792F);
  letter-spacing: 0.04em;
  text-transform: uppercase;
  white-space: nowrap;
}

[data-resolved-theme="dark"] .mai-tour-step-pill {
  background: #252528;
  border-color: #38383c;
}

/* Language Switcher in Popover */
.mai-tour-lang-wrap {
  position: relative;
}

.mai-tour-lang-btn {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 3px 8px;
  height: 26px;
  background: var(--surface-2, #F1EFE8);
  border: 1px solid var(--line, #E3E0D6);
  border-radius: var(--radius-pill, 999px);
  color: var(--ink, #15140F);
  font-size: 11.5px;
  font-weight: 500;
  cursor: pointer;
  transition: all 140ms ease;
  user-select: none;
}

.mai-tour-lang-btn:hover {
  border-color: var(--accent, #B5792F);
  background: var(--surface, #FFFFFF);
  color: var(--accent, #B5792F);
}

[data-resolved-theme="dark"] .mai-tour-lang-btn {
  background: #252528;
  border-color: #38383c;
  color: #ECE8DC;
}

[data-resolved-theme="dark"] .mai-tour-lang-btn:hover {
  background: #2f2f34;
  border-color: var(--accent, #B5792F);
}

.mai-tour-close-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 26px;
  height: 26px;
  border-radius: var(--radius-pill, 999px);
  border: none;
  background: transparent;
  color: var(--muted, #6B685E);
  cursor: pointer;
  transition: all 140ms ease;
}

.mai-tour-close-btn:hover {
  background: var(--surface-2, #F1EFE8);
  color: var(--ink, #15140F);
}

[data-resolved-theme="dark"] .mai-tour-close-btn:hover {
  background: #2a2a2e;
  color: #ECE8DC;
}

/* Language Selection Menu Dropdown */
.mai-tour-lang-menu {
  position: absolute;
  top: calc(100% + 6px);
  right: 0;
  width: 240px;
  max-height: 240px;
  overflow-y: auto;
  background: var(--surface, #FFFFFF);
  border: 1px solid var(--line, #E3E0D6);
  border-radius: 14px;
  box-shadow: 0 12px 32px rgba(0, 0, 0, 0.2);
  padding: 6px;
  z-index: 99999;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3px;
}

[data-resolved-theme="dark"] .mai-tour-lang-menu {
  background: #1e1e22;
  border-color: #333338;
  box-shadow: 0 16px 40px rgba(0, 0, 0, 0.6);
}

.mai-tour-lang-item {
  display: flex;
  flex-direction: column;
  padding: 5px 8px;
  border-radius: 8px;
  border: none;
  background: transparent;
  text-align: left;
  cursor: pointer;
  font-family: inherit;
  transition: background 120ms ease;
}

.mai-tour-lang-item:hover,
.mai-tour-lang-item:focus-visible {
  background: var(--surface-2, #F1EFE8);
  outline: none;
}

[data-resolved-theme="dark"] .mai-tour-lang-item:hover {
  background: #2b2b32;
}

.mai-tour-lang-item.is-selected {
  background: var(--accent-soft, rgba(181, 121, 47, 0.15));
  font-weight: 600;
}

.mai-tour-lang-item-native {
  font-size: 11.5px;
  color: var(--ink, #15140F);
  line-height: 1.2;
}

.mai-tour-lang-item-name {
  font-size: 9.5px;
  color: var(--muted, #6B685E);
  line-height: 1.2;
}

[data-resolved-theme="dark"] .mai-tour-lang-item-native {
  color: #ECE8DC;
}

/* Dots and Meta Progress */
.mai-tour-dots-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.mai-tour-dots {
  display: flex;
  align-items: center;
  gap: 5px;
}

.mai-tour-dot {
  width: 6px;
  height: 6px;
  border-radius: var(--radius-pill, 999px);
  background: var(--line-strong, #D1CFC7);
  transition: all 220ms ease;
}

.mai-tour-dot.is-active {
  width: 18px;
  background: var(--accent, #B5792F);
}

.mai-tour-step-counter {
  font-size: 11px;
  font-weight: 500;
  color: var(--muted, #6B685E);
}

/* Typography */
.mai-tour-title {
  font-family: var(--font-display, var(--font-serif, serif));
  font-size: 18px;
  font-weight: 600;
  color: var(--ink, #15140F);
  line-height: 1.3;
  margin: 0;
  letter-spacing: -0.01em;
}

[data-resolved-theme="dark"] .mai-tour-title {
  color: #FAF8F2;
}

.mai-tour-desc {
  font-size: 13.5px;
  line-height: 1.55;
  color: var(--ink-2, #4F4D45);
  margin: 0;
}

[data-resolved-theme="dark"] .mai-tour-desc {
  color: #B5B2A8;
}

/* Feature Preview Pill */
.mai-tour-preview-pill {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 6px 12px;
  background: var(--surface-2, #F1EFE8);
  border: 1px solid var(--line, #E3E0D6);
  border-radius: var(--radius-pill, 999px);
  font-size: 11.5px;
  font-weight: 500;
  color: var(--ink, #15140F);
  align-self: flex-start;
  max-width: 100%;
}

[data-resolved-theme="dark"] .mai-tour-preview-pill {
  background: #242426;
  border-color: #38383c;
  color: #ECE8DC;
}

.mai-tour-preview-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent, #B5792F);
  flex-shrink: 0;
}

/* Footer & Navigation Buttons */
.mai-tour-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  padding-top: 10px;
  border-top: 1px solid var(--line, #E3E0D6);
  margin-top: 2px;
}

[data-resolved-theme="dark"] .mai-tour-footer {
  border-top-color: #2b2b30;
}

.mai-tour-nav-btns {
  display: flex;
  align-items: center;
  gap: 8px;
}

.mai-tour-primary-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 7px 16px;
  background: var(--ink, #15140F);
  color: var(--paper, #FDFCF9);
  border: 1px solid transparent;
  border-radius: var(--radius-pill, 999px);
  font-size: 13px;
  font-weight: 500;
  cursor: pointer;
  transition: all 160ms cubic-bezier(0.16, 1, 0.3, 1);
  text-decoration: none;
  min-height: 36px;
  user-select: none;
  white-space: nowrap;
}

.mai-tour-primary-btn:hover {
  background: var(--accent, #B5792F);
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(181, 121, 47, 0.28);
}

.mai-tour-primary-btn:active {
  transform: translateY(0);
}

[data-resolved-theme="dark"] .mai-tour-primary-btn {
  background: #ECE8DC;
  color: #121212;
}

[data-resolved-theme="dark"] .mai-tour-primary-btn:hover {
  background: #D98C36;
  color: #FFFFFF;
}

.mai-tour-secondary-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 7px 14px;
  background: var(--surface-2, #F1EFE8);
  color: var(--ink, #15140F);
  border: 1px solid var(--line, #E3E0D6);
  border-radius: var(--radius-pill, 999px);
  font-size: 13px;
  font-weight: 500;
  cursor: pointer;
  transition: all 140ms ease;
  min-height: 36px;
  user-select: none;
  white-space: nowrap;
}

.mai-tour-secondary-btn:hover:not(:disabled) {
  background: var(--surface, #FFFFFF);
  border-color: var(--ink, #15140F);
}

.mai-tour-secondary-btn:disabled {
  opacity: 0.38;
  cursor: not-allowed;
}

[data-resolved-theme="dark"] .mai-tour-secondary-btn {
  background: #242428;
  border-color: #38383e;
  color: #ECE8DC;
}

[data-resolved-theme="dark"] .mai-tour-secondary-btn:hover:not(:disabled) {
  background: #2e2e34;
  border-color: #ECE8DC;
}

.mai-tour-skip-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 6px 10px;
  background: transparent;
  color: var(--muted, #6B685E);
  border: none;
  border-radius: var(--radius-pill, 999px);
  font-size: 12.5px;
  font-weight: 500;
  cursor: pointer;
  transition: all 140ms ease;
  min-height: 34px;
}

.mai-tour-skip-btn:hover {
  color: var(--ink, #15140F);
  background: var(--surface-2, #F1EFE8);
}

[data-resolved-theme="dark"] .mai-tour-skip-btn:hover {
  color: #ECE8DC;
  background: #242428;
}

/* ── 3. Step 7 Celebration View ─────────────────────────────────────────── */
.mai-tour-celebration-badge {
  width: 48px;
  height: 48px;
  border-radius: 16px;
  background: var(--accent-soft, rgba(181, 121, 47, 0.15));
  border: 1px solid var(--accent, #B5792F);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent, #B5792F);
  margin-bottom: 2px;
}

.mai-tour-quick-links {
  display: flex;
  flex-direction: column;
  gap: 7px;
  width: 100%;
  margin-top: 2px;
}

.mai-tour-quick-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 9px 12px;
  background: var(--surface, #FFFFFF);
  border: 1px solid var(--line, #E3E0D6);
  border-radius: 14px;
  text-decoration: none;
  color: var(--ink, #15140F);
  font-size: 13px;
  font-weight: 500;
  transition: all 140ms ease;
}

.mai-tour-quick-item:hover {
  border-color: var(--accent, #B5792F);
  background: var(--surface-2, #F1EFE8);
  transform: translateY(-1px);
}

[data-resolved-theme="dark"] .mai-tour-quick-item {
  background: #202024;
  border-color: #333338;
  color: #ECE8DC;
}

/* ── 4. Mobile Responsive Adaptations ─────────────────────────────────────── */
@media (max-width: 640px) {
  .mai-tour-popover {
    left: 12px !important;
    right: 12px !important;
    width: auto !important;
    max-width: none !important;
    padding: 16px 16px;
    gap: 10px;
    border-radius: 18px;
  }

  /* When target is in bottom half (e.g. bottom navigation tabs): place card at TOP */
  .mai-tour-popover[data-placement="mobile-top"] {
    top: calc(14px + env(safe-area-inset-top, 0px)) !important;
    bottom: auto !important;
    transform: translateY(0) scale(1) !important;
  }

  /* When target is in top half (e.g. brand, search, carousel): place card at BOTTOM */
  .mai-tour-popover[data-placement="mobile-bottom"] {
    top: auto !important;
    bottom: calc(72px + env(safe-area-inset-bottom, 0px)) !important;
    transform: translateY(0) scale(1) !important;
  }

  .mai-tour-popover[data-placement="center"] {
    top: 50% !important;
    bottom: auto !important;
    left: 12px !important;
    right: 12px !important;
    transform: translateY(-50%) scale(1) !important;
  }

  .mai-tour-title {
    font-size: 16px;
    line-height: 1.3;
  }

  .mai-tour-desc {
    font-size: 12.5px;
    line-height: 1.5;
  }

  .mai-tour-preview-pill {
    padding: 4px 9px;
    font-size: 11px;
  }

  .mai-tour-footer {
    padding-top: 8px;
  }

  .mai-tour-primary-btn,
  .mai-tour-secondary-btn {
    min-height: 38px;
    padding: 6px 14px;
    font-size: 12.5px;
  }

  .mai-tour-arrow {
    display: none !important;
  }

  .mai-tour-lang-menu {
    right: -40px;
    width: 210px;
  }
}

/* ── 5. Welcome Notification Toast ────────────────────────────────────────── */
.mai-welcome-toast {
  position: fixed;
  bottom: 28px;
  right: 28px;
  width: 380px;
  max-width: calc(100vw - 36px);
  background: var(--surface, #FFFFFF);
  background: var(--liquid-glass-bg, rgba(255, 255, 255, 0.92));
  backdrop-filter: var(--liquid-blur, blur(28px) saturate(190%));
  -webkit-backdrop-filter: var(--liquid-blur, blur(28px) saturate(190%));
  border: 1px solid var(--liquid-glass-border, rgba(0, 0, 0, 0.1));
  box-shadow: 0 16px 40px rgba(0, 0, 0, 0.16);
  border-radius: 20px;
  padding: 18px 20px;
  z-index: 99990;
  display: flex;
  flex-direction: column;
  gap: 12px;
  opacity: 0;
  transform: translateY(20px) scale(0.97);
  pointer-events: none;
  transition: opacity 320ms cubic-bezier(0.16, 1, 0.3, 1), transform 320ms cubic-bezier(0.16, 1, 0.3, 1);
}

[data-resolved-theme="dark"] .mai-welcome-toast {
  background: rgba(26, 26, 28, 0.95);
  border-color: rgba(255, 255, 255, 0.14);
  box-shadow: 0 20px 48px rgba(0, 0, 0, 0.6);
}

.mai-welcome-toast.is-visible {
  opacity: 1;
  transform: translateY(0) scale(1);
  pointer-events: auto;
}

.mai-welcome-header {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  position: relative;
}

.mai-welcome-badge {
  width: 36px;
  height: 36px;
  border-radius: 12px;
  background: var(--surface-2, #F1EFE8);
  border: 1px solid var(--line, #E3E0D6);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent, #B5792F);
  flex-shrink: 0;
}

.mai-welcome-intro {
  flex: 1;
  min-width: 0;
  padding-right: 20px;
}

.mai-welcome-kicker {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent, #B5792F);
  margin-bottom: 2px;
  display: block;
}

.mai-welcome-title {
  font-family: var(--font-display, var(--font-serif, serif));
  font-size: 16px;
  font-weight: 600;
  color: var(--ink, #15140F);
  line-height: 1.3;
  margin: 0;
}

.mai-welcome-close {
  position: absolute;
  top: -4px;
  right: -4px;
  width: 26px;
  height: 26px;
  border-radius: var(--radius-pill, 999px);
  border: none;
  background: transparent;
  color: var(--muted, #6B685E);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all 140ms ease;
}

.mai-welcome-close:hover {
  background: var(--surface-2, #F1EFE8);
  color: var(--ink, #15140F);
}

.mai-welcome-body {
  font-size: 13px;
  line-height: 1.5;
  color: var(--ink-2, #4F4D45);
  margin: 0;
}

[data-resolved-theme="dark"] .mai-welcome-body {
  color: #B5B2A8;
}

.mai-welcome-actions {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-top: 2px;
}

@media (max-width: 640px) {
  .mai-welcome-toast {
    bottom: calc(72px + env(safe-area-inset-bottom, 0px));
    left: 14px;
    right: 14px;
    width: auto;
    max-width: none;
    padding: 16px 18px;
  }
}

/* ── 6. RTL (Arabic) Support ──────────────────────────────────────────────── */
[dir="rtl"] .mai-tour-header-right {
  margin-left: 0;
  margin-right: auto;
}

[dir="rtl"] .mai-tour-lang-menu {
  right: auto;
  left: 0;
}

[dir="rtl"] .mai-tour-lang-item {
  text-align: right;
}

[dir="rtl"] .mai-welcome-intro {
  padding-right: 0;
  padding-left: 20px;
}

[dir="rtl"] .mai-welcome-close {
  right: auto;
  left: -4px;
}

/* ── 7. Accessibility & Screen Reader Utilities ────────────────────────────── */
.mai-tour-sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

@media (prefers-reduced-motion: reduce) {
  .mai-welcome-toast,
  .mai-tour-overlay,
  .mai-tour-spotlight-ring,
  .mai-tour-popover {
    transition: none !important;
    animation: none !important;
  }
}