/* ============================================================
   TOUR MODE - A Tour of Lingua Universale
   Uses existing CSS variables from index.html (Catppuccin Mocha)
============================================================ */

/* Tour button in toolbar */
.btn-tour {
  background: transparent;
  border-color: var(--accent-violet);
  color: var(--accent-violet);
}
.btn-tour:not(:disabled):hover {
  background: rgba(203, 166, 247, 0.1);
  box-shadow: 0 0 0 1px var(--accent-violet);
}
.btn-tour svg {
  width: 15px;
  height: 15px;
  fill: currentColor;
}
.btn-tour.active {
  background: rgba(203, 166, 247, 0.15);
  border-color: var(--accent-violet);
}

/* Tour bar (below toolbar when active) */
.tour-bar {
  background: var(--bg-surface);
  border-bottom: 1px solid var(--border);
  flex-shrink: 0;
}

.tour-progress-container {
  height: 3px;
  background: var(--bg-panel);
}
.tour-progress-bar {
  height: 100%;
  background: linear-gradient(90deg, var(--accent-violet), var(--accent-blue));
  transition: width var(--t-base);
  width: 0%;
}

.tour-nav {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 6px 20px;
}

.btn-tour-nav {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: var(--bg-panel);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  color: var(--text-secondary);
  cursor: pointer;
  padding: 5px 10px;
  font-size: 12px;
  font-family: var(--font-ui);
  transition: all var(--t-fast);
}
.btn-tour-nav:hover {
  border-color: var(--accent-blue);
  color: var(--text-primary);
}
.btn-tour-nav:disabled {
  opacity: 0.3;
  cursor: not-allowed;
}
.btn-tour-nav svg {
  width: 16px;
  height: 16px;
  fill: currentColor;
}

.tour-position {
  font-size: 12px;
  font-weight: 600;
  color: var(--text-muted);
  min-width: 60px;
  text-align: center;
}
.tour-nav-spacer {
  flex: 1;
}
.tour-exit-btn {
  border-color: var(--accent-red) !important;
  color: var(--accent-red) !important;
}
.tour-exit-btn:hover {
  background: rgba(243, 139, 168, 0.1) !important;
}

/* Tour panel (replaces output area) */
.tour-panel {
  flex: 1;
  overflow-y: auto;
  padding: 24px;
  font-family: var(--font-ui);
  line-height: 1.7;
}
.tour-panel::-webkit-scrollbar {
  width: 6px;
}
.tour-panel::-webkit-scrollbar-thumb {
  background: var(--border);
  border-radius: 3px;
}

.tour-chapter-tag {
  display: inline-block;
  padding: 3px 10px;
  background: rgba(203, 166, 247, 0.12);
  border-radius: 12px;
  font-size: 11px;
  font-weight: 600;
  color: var(--accent-violet);
  letter-spacing: 0.04em;
  text-transform: uppercase;
  margin-bottom: 12px;
}

.tour-step-title {
  font-size: 20px;
  font-weight: 700;
  color: var(--text-primary);
  margin: 0 0 16px 0;
}

.tour-explanation {
  color: var(--text-secondary);
  font-size: 14px;
}
.tour-explanation p {
  margin: 0 0 12px 0;
}
.tour-explanation code {
  background: var(--bg-panel);
  padding: 2px 6px;
  border-radius: var(--radius-sm);
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--accent-teal);
}
.tour-explanation strong {
  color: var(--text-primary);
  font-weight: 600;
}
.tour-explanation em {
  color: var(--accent-yellow);
  font-style: italic;
}
.tour-explanation ul {
  margin: 8px 0 12px 20px;
  padding: 0;
}
.tour-explanation li {
  margin-bottom: 4px;
}

.tour-hint {
  margin-top: 16px;
  padding: 10px 14px;
  background: rgba(137, 180, 250, 0.08);
  border-left: 3px solid var(--accent-blue);
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  font-size: 13px;
  color: var(--accent-blue);
}
.tour-hint:empty {
  display: none;
}

.tour-action-prompt {
  margin-top: 16px;
  font-size: 13px;
  color: var(--text-muted);
}

.tour-result {
  margin-top: 16px;
}

.tour-exercise-controls {
  margin-top: 16px;
  padding-top: 12px;
  border-top: 1px solid var(--border);
}

/* Suggested button pulse animation */
.suggested-btn {
  animation: pulse-suggest 2s infinite;
}
@keyframes pulse-suggest {
  0%, 100% { box-shadow: 0 0 0 0 rgba(203, 166, 247, 0.4); }
  50% { box-shadow: 0 0 0 6px rgba(203, 166, 247, 0); }
}

/* Chapters overlay */
.tour-chapters-overlay {
  position: fixed;
  inset: 0;
  z-index: 8000;
  background: rgba(17, 17, 27, 0.85);
  display: flex;
  align-items: center;
  justify-content: center;
}
.tour-chapters-modal {
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 28px;
  max-width: 520px;
  width: 90%;
  max-height: 80vh;
  overflow-y: auto;
  box-shadow: var(--shadow-lg);
}
.tour-chapters-modal h2 {
  font-size: 18px;
  font-weight: 700;
  margin: 0 0 20px 0;
  color: var(--text-primary);
}
.tour-chapters-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-bottom: 20px;
}
.tour-chapter-card {
  padding: 14px;
  background: var(--bg-panel);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--t-fast);
}
.tour-chapter-card:hover {
  border-color: var(--accent-violet);
  background: rgba(49, 50, 68, 0.8);
}
.ch-title {
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 4px;
}
.ch-desc {
  font-size: 12px;
  color: var(--text-muted);
  margin-bottom: 8px;
}
.ch-dots {
  display: flex;
  gap: 4px;
}
.ch-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--border);
}
.ch-dot.completed {
  background: var(--accent-green);
}
.ch-dot.current {
  background: var(--accent-blue);
}

/* Responsive */
@media (max-width: 768px) {
  .tour-panel {
    padding: 16px;
  }
  .tour-step-title {
    font-size: 17px;
  }
  .tour-nav {
    padding: 6px 12px;
    gap: 4px;
  }
  .tour-chapters-btn-text {
    display: none;
  }
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
  .suggested-btn {
    animation: none;
  }
  .tour-progress-bar {
    transition: none;
  }
}