/* ============================================================
   MazeGen - Maze Demo Page Styles
   ============================================================ */

/* Page-specific custom properties */
:root {
  --mg-tabbar-height: 60px;
}

/* Layout — full-viewport app style */
.maze-main {
  display: grid;
  grid-template-columns: 280px 1fr 1.5fr;
  gap: 0;
  padding: 0;
  max-width: 1600px;
  margin: 0 auto;
  height: calc(100vh - var(--mg-navbar-height));
  overflow: hidden;
}

.maze-col-1,
.maze-col-2,
.maze-col-3 {
  background: var(--mg-surface);
  border-radius: 0;
  padding: 20px;
  height: 100%;
  overflow-y: auto;
  border-right: 1px solid var(--mg-border);
}
.maze-col-3 {
  border-right: none;
}

/* Thin scrollbars */
.maze-col-1,
.maze-col-2,
.maze-col-3 {
  scrollbar-width: thin;
  scrollbar-color: var(--mg-border) transparent;
}
.maze-col-1::-webkit-scrollbar,
.maze-col-2::-webkit-scrollbar,
.maze-col-3::-webkit-scrollbar {
  width: 4px;
}
.maze-col-1::-webkit-scrollbar-track,
.maze-col-2::-webkit-scrollbar-track,
.maze-col-3::-webkit-scrollbar-track {
  background: transparent;
}
.maze-col-1::-webkit-scrollbar-thumb,
.maze-col-2::-webkit-scrollbar-thumb,
.maze-col-3::-webkit-scrollbar-thumb {
  background: var(--mg-border);
  border-radius: 4px;
}

/* Section headers — sticky */
.maze-section-title {
  font-size: 1rem;
  font-weight: 700;
  color: var(--mg-text);
  margin: -20px -20px 16px;
  padding: 16px 20px 8px;
  border-bottom: 2px solid var(--mg-primary);
  display: flex;
  align-items: center;
  gap: 8px;
  position: sticky;
  top: -20px;
  z-index: 10;
  background: var(--mg-surface);
}
.maze-section-title i { color: var(--mg-primary); }

/* Form Controls */
.mg-form-group {
  margin-bottom: 12px;
}
.mg-form-group label {
  display: block;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--mg-text-muted);
  margin-bottom: 4px;
  letter-spacing: 0.3px;
}
.mg-form-group input[type="number"],
.mg-form-group select {
  width: 100%;
  padding: 6px 10px;
  border: 1px solid var(--mg-border);
  border-radius: var(--mg-radius);
  background: var(--mg-bg);
  color: var(--mg-text);
  font-size: 0.9rem;
  transition: border-color 0.15s;
}
.mg-form-group input:focus,
.mg-form-group select:focus {
  outline: none;
  border-color: var(--mg-primary);
  box-shadow: 0 0 0 3px var(--mg-primary-light);
}
.mg-form-group input[type="color"] {
  width: 48px;
  height: 44px;
  padding: 2px;
  border: 1px solid var(--mg-border);
  border-radius: var(--mg-radius);
  cursor: pointer;
  background: var(--mg-bg);
}
.mg-form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
}
.mg-form-group .form-check-input {
  width: 18px;
  height: 18px;
  margin-top: 2px;
}
.mg-color-row {
  display: flex;
  align-items: center;
  gap: 10px;
}
.mg-color-row .color-hex {
  font-size: 0.8rem;
  color: var(--mg-text-muted);
  font-family: monospace;
}

/* Generate Button */
.btn-generate {
  width: 100%;
  padding: 10px 20px;
  background: var(--mg-primary);
  color: #fff;
  border: none;
  border-radius: var(--mg-radius);
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.15s;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  margin-top: 16px;
}
.btn-generate:hover {
  background: var(--mg-primary-hover);
  transform: translateY(-1px);
  box-shadow: var(--mg-shadow-md);
}
.btn-generate:active { transform: translateY(0); }
.btn-generate:focus-visible {
  outline: 2px solid var(--mg-primary);
  outline-offset: 2px;
  box-shadow: 0 0 0 4px var(--mg-primary-ring);
}
.btn-generate:disabled {
  background: var(--mg-secondary);
  color: rgba(255,255,255,0.7);
  cursor: not-allowed;
  transform: none;
  box-shadow: none;
}
.btn-generate .spinner-border {
  width: 18px;
  height: 18px;
  border-width: 2px;
}
.btn-reset {
  padding: 10px 14px;
  background: var(--mg-surface);
  color: var(--mg-text-muted);
  border: 1px solid var(--mg-border);
  border-radius: var(--mg-radius);
  font-size: 0.95rem;
  cursor: pointer;
  transition: all 0.15s;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}
.btn-reset:hover {
  color: var(--mg-text);
  border-color: var(--mg-text-muted);
  background: var(--mg-bg);
}
.btn-reset:focus-visible {
  outline: 2px solid var(--mg-primary);
  outline-offset: 2px;
}

/* Button Row (generate + reset side by side) */
.mg-button-row {
  display: flex;
  gap: 8px;
  margin-top: 16px;
}
.mg-button-row .btn-generate {
  flex: 1;
  margin-top: 0;
}

/* Maze Type Grid */
.maze-type-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 8px;
}
.maze-type-card {
  position: relative;
  border: 2px solid var(--mg-border);
  border-radius: var(--mg-radius);
  padding: 8px;
  cursor: pointer;
  transition: all 0.15s;
  text-align: center;
  background: var(--mg-bg);
}
.maze-type-card:hover {
  border-color: var(--mg-primary);
  box-shadow: var(--mg-shadow);
  transform: translateY(-2px);
}
.maze-type-card.selected {
  border-color: var(--mg-primary);
  background: var(--mg-primary-light);
  box-shadow: 0 0 0 3px var(--mg-primary-ring);
}
.maze-type-card input[type="radio"] {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}
.maze-type-card img {
  width: 100%;
  max-width: 80px;
  height: auto;
  display: block;
  margin: 0 auto 4px;
  border-radius: 4px;
}
[data-bs-theme="dark"] .maze-type-card img {
  opacity: 0.85;
  border: 1px solid var(--mg-border);
}
.maze-type-card .type-name {
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--mg-text-muted);
  line-height: 1.2;
  text-transform: uppercase;
  letter-spacing: 0.3px;
}
.maze-type-card.selected .type-name {
  color: var(--mg-primary);
}

/* Category Tabs */
.maze-category-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
  margin-bottom: 12px;
}
.maze-category-tab {
  padding: 8px 14px;
  font-size: 0.75rem;
  font-weight: 600;
  border: 1px solid var(--mg-border);
  border-radius: 20px;
  background: var(--mg-bg);
  color: var(--mg-text-muted);
  cursor: pointer;
  transition: all 0.15s;
  min-height: 44px;
  display: inline-flex;
  align-items: center;
}
.maze-category-tab:hover {
  border-color: var(--mg-primary);
  color: var(--mg-primary);
}
.maze-category-tab.active {
  background: var(--mg-primary);
  color: #fff;
  border-color: var(--mg-primary);
}

/* Preview Area — flex column layout */
.preview-area {
  display: flex;
  flex-direction: column;
  height: 100%;
}
.preview-container {
  flex: 1;
  min-height: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--mg-bg);
  border: 2px dashed var(--mg-border);
  border-radius: var(--mg-radius-lg);
  overflow: hidden;
  position: relative;
  transition: border-color 0.2s;
}
.preview-container.has-image {
  border-style: solid;
  border-color: var(--mg-border);
}
#image-container {
  position: absolute;
  inset: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
}
.preview-container img,
.preview-container svg {
  max-width: 100%;
  max-height: 100%;
  display: block;
  object-fit: contain;
}

/* Empty state */
.preview-empty {
  text-align: center;
  color: var(--mg-text-muted);
  padding: 60px;
}
.preview-empty i {
  font-size: 4rem;
  margin-bottom: 12px;
  opacity: 0.5;
  color: var(--mg-primary);
}
.preview-empty p {
  font-size: 1rem;
  margin: 0;
}
.preview-empty .shortcut-hint {
  font-size: 0.75rem;
  margin-top: 8px;
  opacity: 0.6;
}
.preview-empty kbd {
  background: var(--mg-surface-2);
  color: var(--mg-text);
  border: 1px solid var(--mg-border);
  border-radius: 4px;
  padding: 1px 6px;
  font-size: 0.75rem;
}

/* Loading overlay */
.preview-loading {
  position: absolute;
  inset: 0;
  display: none;
  align-items: center;
  justify-content: center;
  background: rgba(255,255,255,0.8);
  border-radius: var(--mg-radius-lg);
  z-index: 2;
}
[data-bs-theme="dark"] .preview-loading {
  background: rgba(15,23,42,0.8);
}
.preview-loading.active { display: flex; }
.preview-loading .spinner-border {
  width: 40px;
  height: 40px;
  color: var(--mg-primary);
}

/* Download Buttons */
.download-actions {
  display: flex;
  gap: 8px;
  margin-top: 12px;
  flex-shrink: 0;
}
.download-actions .btn {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 10px 16px;
  font-weight: 600;
  font-size: 0.9rem;
  border-radius: var(--mg-radius);
  transition: all 0.15s;
}
.btn-download-img {
  background: var(--mg-bg);
  border: 1px solid var(--mg-border);
  color: var(--mg-text);
}
.btn-download-img:hover {
  background: var(--mg-surface-2);
  border-color: var(--mg-text-muted);
}
.btn-download-pdf {
  background: var(--mg-primary);
  border: 1px solid var(--mg-primary);
  color: #fff;
}
.btn-download-pdf:hover {
  background: var(--mg-primary-hover);
}
.btn-download-batch {
  background: var(--mg-surface-2);
  border: 1px solid var(--mg-border);
  color: var(--mg-text);
}
.btn-download-batch:hover {
  background: var(--mg-border);
}
.btn-download-book {
  background: var(--mg-surface-2);
  border: 1px solid var(--mg-border);
  color: var(--mg-text);
}
.btn-download-book:hover {
  background: var(--mg-border);
}
.btn-sample-pdf {
  background: var(--mg-surface);
  border: 1px solid var(--mg-primary);
  color: var(--mg-primary);
}
.btn-sample-pdf:hover {
  background: var(--mg-primary);
  color: #fff;
}
.mg-btn-badge-free {
  background: var(--mg-success);
  color: #fff;
  font-size: 0.65rem;
  font-weight: 700;
  padding: 2px 6px;
  border-radius: 4px;
  margin-left: 2px;
}

/* Keyboard shortcut badges */
.shortcut-badges {
  display: flex;
  gap: 12px;
  justify-content: center;
  margin-top: 8px;
  flex-shrink: 0;
}
.shortcut-badges span {
  font-size: 0.7rem;
  color: var(--mg-text-muted);
}
.shortcut-badges kbd {
  background: var(--mg-surface-2);
  color: var(--mg-text);
  border: 1px solid var(--mg-border);
  border-radius: 4px;
  padding: 1px 5px;
  font-size: 0.7rem;
  margin-right: 3px;
}

/* ============================================================
   Mobile Tab Bar
   ============================================================ */

/* (--mg-tabbar-height defined in :root at top of file) */

.maze-tabbar {
  display: none;
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  height: var(--mg-tabbar-height);
  background: var(--mg-bg);
  border-top: 1px solid var(--mg-border);
  z-index: 1000;
  justify-content: stretch;
  align-items: stretch;
}

.maze-tab {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 2px;
  background: none;
  border: none;
  color: var(--mg-text-muted);
  font-size: 0.7rem;
  font-weight: 600;
  cursor: pointer;
  transition: color 0.15s;
  padding: 8px 0;
  min-height: 44px;
}
.maze-tab i {
  font-size: 1.15rem;
}
.maze-tab.active {
  color: var(--mg-primary);
}
.maze-tab:hover {
  color: var(--mg-primary);
}

/* ============================================================
   Responsive — Tab-based panel switching (<1100px)
   ============================================================ */

/* Shared: tablet + mobile tab bar and horizontal-scroll category tabs */
@media (max-width: 1099.98px) {
  .maze-tabbar {
    display: flex;
  }

  .maze-category-tabs {
    flex-wrap: nowrap;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: thin;
    padding-bottom: 4px;
  }
  .maze-category-tabs::-webkit-scrollbar {
    height: 4px;
  }
  .maze-category-tabs::-webkit-scrollbar-thumb {
    background: var(--mg-border);
    border-radius: 4px;
  }
  .maze-category-tab {
    white-space: nowrap;
    flex-shrink: 0;
  }

  .shortcut-badges { display: none; }
}

/* Tablet: 2-column layout (Settings + Preview visible, Types behind tab) */
@media (min-width: 768px) and (max-width: 1099.98px) {
  .maze-main {
    grid-template-columns: 280px 1fr;
    height: calc(100vh - var(--mg-navbar-height) - var(--mg-tabbar-height));
  }

  .maze-col-1 {
    display: block !important;
    border-right: 1px solid var(--mg-border);
  }
  .maze-col-2 {
    display: none;
  }
  .maze-col-2.active-panel {
    display: block;
    grid-column: 1 / -1;
  }
  .maze-col-3 {
    display: block !important;
  }
}

/* Mobile: single-panel tab switching */
@media (max-width: 767.98px) {
  .maze-main {
    grid-template-columns: 1fr;
    height: calc(100vh - var(--mg-navbar-height) - var(--mg-tabbar-height));
  }

  .maze-col-1,
  .maze-col-2,
  .maze-col-3 {
    display: none;
    border-right: none;
  }

  .maze-col-1.active-panel,
  .maze-col-2.active-panel,
  .maze-col-3.active-panel {
    display: block;
  }

  .download-actions {
    flex-direction: column;
  }

  /* Ensure 44px minimum touch targets for mask dropdown options */
  .mg-mask-option { padding: 10px; min-height: 44px; }
}

@media (max-width: 480px) {
  .maze-type-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .maze-col-1, .maze-col-2, .maze-col-3 {
    padding: 14px;
  }
  .maze-section-title {
    margin: -14px -14px 16px;
    padding: 12px 14px 8px;
    top: -14px;
  }
}

/* ============================================================
   Focus Indicators (Accessibility)
   ============================================================ */

.maze-category-tab:focus-visible,
.maze-type-card:focus-visible,
.btn-generate:focus-visible,
.btn-download-img:focus-visible,
.btn-download-pdf:focus-visible,
.btn-download-batch:focus-visible,
.btn-download-book:focus-visible,
.btn-sample-pdf:focus-visible,
.mg-advanced-btn:focus-visible,
.mg-seed-btn:focus-visible,
.maze-tab:focus-visible {
  outline: 2px solid var(--mg-primary);
  outline-offset: 2px;
}

.maze-category-tab:focus:not(:focus-visible),
.maze-type-card:focus:not(:focus-visible),
.btn-generate:focus:not(:focus-visible),
.maze-tab:focus:not(:focus-visible) {
  outline: none;
}

/* ============================================================
   Locked Cards
   ============================================================ */

.maze-type-card.locked {
  cursor: not-allowed;
  position: relative;
  filter: grayscale(0.6);
  background: var(--mg-surface-2);
  border-color: var(--mg-border);
}
.maze-type-card.locked .type-name {
  color: var(--mg-text-muted);
}
.maze-type-card.locked img {
  opacity: 0.5;
}
.maze-type-card.locked:hover {
  filter: grayscale(0.3);
  transform: none;
  box-shadow: none;
}
.maze-type-card.locked .lock-badge {
  position: absolute;
  top: 6px;
  right: 6px;
  background: var(--mg-surface-2);
  color: var(--mg-text-muted);
  border-radius: 50%;
  width: 22px;
  height: 22px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.65rem;
}

/* ============================================================
   Utility Classes (extracted from inline styles)
   ============================================================ */

.mg-checkbox-wrapper {
  padding-top: 4px;
}
.mg-checkbox-label {
  font-size: 0.85rem;
  text-transform: none;
  letter-spacing: 0;
  color: var(--mg-text);
}
.mg-upgrade-cta {
  background: var(--mg-surface);
  border: 1px solid var(--mg-primary);
  text-align: center;
  padding: 0.75rem;
  border-radius: var(--mg-radius);
  margin-top: 1rem;
}
.mg-upgrade-cta p {
  margin: 0 0 8px;
  font-size: 0.9rem;
  color: var(--mg-text);
}
.mg-upgrade-cta-desc {
  font-size: 0.8rem;
  color: var(--mg-text-muted);
  margin: 0 0 10px;
}
.mg-upgrade-cta .fa-lock {
  color: var(--mg-primary);
}
.btn-upgrade {
  background: var(--mg-primary);
  color: #fff;
  border: none;
  padding: 6px 20px;
  border-radius: 6px;
  font-size: 0.85rem;
}
.btn-upgrade:hover {
  background: var(--mg-primary-hover);
  color: #fff;
}
.btn-upgrade:focus-visible {
  outline: 2px solid var(--mg-primary);
  outline-offset: 2px;
}
.mg-advanced-container {
  border: 1px solid var(--mg-border);
  border-radius: var(--mg-radius);
  padding: 12px;
  margin-bottom: 12px;
  background: var(--mg-surface);
}
.mg-advanced-btn {
  background: var(--mg-surface);
  border: 1px solid var(--mg-border);
  color: var(--mg-text);
  font-size: 0.8rem;
}
.mg-advanced-btn:hover {
  background: var(--mg-surface-2);
}
.mg-file-input {
  font-size: 0.8rem;
}
.mg-file-input:focus-visible {
  outline: 2px solid var(--mg-primary);
  outline-offset: 2px;
}
.btn-disabled-demo {
  background: var(--mg-surface-2) !important;
  color: var(--mg-text-muted) !important;
  border-color: var(--mg-border) !important;
  cursor: not-allowed;
  box-shadow: none !important;
}
/* .mg-form-hint is defined in base layout (main.html) */

/* ============================================================
   Shape / Mask Custom Dropdown
   ============================================================ */

.mg-mask-dropdown {
  position: relative;
  width: 100%;
  cursor: pointer;
}
.mg-mask-selected {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 6px 10px;
  border: 1px solid var(--mg-border);
  border-radius: var(--mg-radius);
  background: var(--mg-bg);
  color: var(--mg-text);
  font-size: 0.9rem;
  transition: border-color 0.15s;
}
.mg-mask-dropdown:focus {
  outline: none;
}
.mg-mask-dropdown:focus .mg-mask-selected {
  border-color: var(--mg-primary);
  box-shadow: 0 0 0 3px var(--mg-primary-light);
}
.mg-mask-dropdown:focus-visible .mg-mask-selected {
  outline: 2px solid var(--mg-primary);
  outline-offset: 2px;
  box-shadow: none;
}
.mg-mask-selected .mg-mask-arrow {
  margin-left: auto;
  font-size: 0.7rem;
  color: var(--mg-text-muted);
  transition: transform 0.2s;
}
.mg-mask-dropdown[aria-expanded="true"] .mg-mask-arrow {
  transform: rotate(180deg);
}
.mg-mask-selected .mg-mask-thumb-bg {
  border-radius: 4px;
}
.mg-mask-selected .mg-mask-thumb {
  width: 26px;
  height: 26px;
  object-fit: contain;
  border-radius: 4px;
  flex-shrink: 0;
  filter: invert(1);
}
.mg-mask-options {
  display: none;
  position: absolute;
  top: calc(100% + 4px);
  left: 0;
  right: 0;
  max-height: 240px;
  overflow-y: auto;
  background: var(--mg-surface);
  border: 1px solid var(--mg-border);
  border-radius: var(--mg-radius);
  box-shadow: 0 4px 12px rgba(0,0,0,0.15);
  z-index: 50;
  scrollbar-width: thin;
  scrollbar-color: var(--mg-border) transparent;
}
.mg-mask-dropdown[aria-expanded="true"] .mg-mask-options {
  display: block;
}
.mg-mask-option {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 8px 10px;
  min-height: 44px;
  cursor: pointer;
  font-size: 0.85rem;
  color: var(--mg-text);
  transition: background 0.1s;
}
.mg-mask-option:hover,
.mg-mask-option.mg-mask-focused {
  background: var(--mg-primary-light);
}
.mg-mask-option[aria-selected="true"] {
  font-weight: 600;
  color: var(--mg-primary);
}
.mg-mask-thumb-bg {
  display: inline-flex;
  background: #fff;
  border-radius: 4px;
  flex-shrink: 0;
  line-height: 0;
}
.mg-mask-thumb {
  width: 30px;
  height: 30px;
  object-fit: contain;
  border-radius: 4px;
  flex-shrink: 0;
  padding: 2px;
  filter: invert(1);
}

/* ============================================================
   Generate Button Loading State
   ============================================================ */

.btn-generate-loading {
  display: inline-flex;
  align-items: center;
  gap: 8px;
}
.btn-generate-loading .spinner-border {
  width: 18px;
  height: 18px;
  border-width: 2px;
}

/* ============================================================
   Editable Color Hex Inputs
   ============================================================ */

.color-hex-input {
  font-size: 0.85rem;
  color: var(--mg-text);
  font-family: monospace;
  font-weight: 600;
  background: transparent;
  border: 1px solid var(--mg-border);
  border-radius: var(--mg-radius);
  padding: 2px 6px;
  width: 85px;
  transition: border-color 0.15s;
}
.color-hex-input:hover {
  border-color: var(--mg-text-muted);
}
.color-hex-input:focus {
  border-color: var(--mg-primary);
  outline: none;
  color: var(--mg-text);
  box-shadow: 0 0 0 3px var(--mg-primary-light);
}
.color-hex-input:focus-visible {
  outline: 2px solid var(--mg-primary);
  outline-offset: 2px;
  box-shadow: none;
}

/* ============================================================
   Seed Randomize Button
   ============================================================ */

.mg-seed-row {
  display: flex;
  gap: 4px;
}
.mg-seed-row input[type="number"] {
  flex: 1;
  min-width: 0;
}
.mg-seed-btn {
  padding: 6px 10px;
  min-width: 44px;
  min-height: 44px;
  border: 1px solid var(--mg-border);
  border-radius: var(--mg-radius);
  background: var(--mg-bg);
  color: var(--mg-text-muted);
  cursor: pointer;
  transition: all 0.15s;
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
}
.mg-seed-btn:hover {
  background: var(--mg-surface-2);
  color: var(--mg-primary);
  border-color: var(--mg-primary);
}

/* ============================================================
   Reduced Motion
   ============================================================ */

@media (prefers-reduced-motion: reduce) {
  .maze-type-card,
  .maze-type-card:hover,
  .btn-generate,
  .btn-generate:hover,
  .preview-container,
  .preview-loading,
  .mg-color-row,
  .mg-form-group input,
  .mg-form-group select,
  .maze-category-tab,
  .download-actions .btn,
  .maze-tab {
    transition: none !important;
    animation: none !important;
  }
  .maze-type-card:hover,
  .btn-generate:hover {
    transform: none !important;
  }
}

/* Utility: preview panel minimum height */
.preview-min-height {
  min-height: 300px;
}