/* ==========================================================================
   AI Mind Map Generator - Canvas, SVG & Interactive Visualizer Styles
   ========================================================================== */

/* Main Mind Map Studio Container */
.mindmap-studio {
  background: var(--bg-secondary);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-xl);
  overflow: hidden;
  margin: 1.5rem 0 3rem 0;
  display: flex;
  flex-direction: column;
  position: relative;
}

.mindmap-studio.is-fullscreen {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  z-index: 9999;
  border-radius: 0;
  margin: 0;
  border: none;
}

/* Studio Input / Prompt Header */
.studio-prompt-bar {
  padding: 1.25rem 1.5rem;
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border-subtle);
  display: flex;
  flex-direction: column;
  gap: 1rem;
  z-index: 20;
}

@media (max-width: 768px) {
  .studio-prompt-bar {
    padding: 1rem 0.75rem;
    gap: 0.75rem;
  }
}

.prompt-input-row {
  display: flex;
  gap: 0.75rem;
  align-items: center;
}

@media (max-width: 768px) {
  .prompt-input-row {
    flex-direction: column;
    align-items: stretch;
  }
  .prompt-input-row .btn {
    width: 100%;
    justify-content: center;
  }
}

.prompt-input-wrap {
  position: relative;
  flex: 1;
}

.prompt-input {
  width: 100%;
  padding: 0.85rem 1.25rem 0.85rem 3rem;
  font-size: 1.05rem;
  border: 2px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  background: var(--bg-tertiary);
  color: var(--text-primary);
  transition: all var(--transition-fast);
}

.prompt-input:focus {
  outline: none;
  border-color: var(--brand-primary);
  background: var(--bg-secondary);
  box-shadow: 0 0 0 4px var(--brand-primary-light);
}

.prompt-icon {
  position: absolute;
  left: 1rem;
  top: 50%;
  transform: translateY(-50%);
  color: var(--brand-primary);
  pointer-events: none;
  font-size: 1.25rem;
}

.prompt-options-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
  font-size: 0.875rem;
  color: var(--text-secondary);
}

@media (max-width: 768px) {
  .prompt-options-row {
    flex-direction: column;
    align-items: stretch;
    gap: 0.65rem;
  }
}

.preset-pills {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  flex-wrap: wrap;
  max-width: 100%;
}

@media (max-width: 768px) {
  .preset-pills {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    flex-wrap: nowrap;
    padding-bottom: 6px;
    width: 100%;
  }
}

.preset-pill {
  padding: 0.35rem 0.75rem;
  border-radius: var(--radius-full);
  background: var(--bg-tertiary);
  border: 1px solid var(--border-subtle);
  color: var(--text-secondary);
  font-size: 0.8rem;
  font-weight: 500;
  cursor: pointer;
  transition: all var(--transition-fast);
  white-space: nowrap;
}

.preset-pill:hover {
  background: var(--brand-primary-light);
  color: var(--brand-primary);
  border-color: var(--brand-primary-border);
}

/* Studio Toolbar Controls */
.studio-toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.65rem 1.25rem;
  background: var(--bg-tertiary);
  border-bottom: 1px solid var(--border-subtle);
  flex-wrap: wrap;
  gap: 0.65rem;
  z-index: 15;
  width: 100%;
}

@media (max-width: 768px) {
  .studio-toolbar {
    padding: 0.5rem 0.65rem;
    gap: 0.45rem;
  }
  .toolbar-group {
    flex-wrap: wrap;
    gap: 0.3rem;
  }
  .toolbar-btn, .toolbar-select {
    padding: 0.35rem 0.55rem;
    font-size: 0.75rem;
  }
}

.toolbar-group {
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

.toolbar-btn {
  padding: 0.45rem 0.75rem;
  background: var(--bg-secondary);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  color: var(--text-secondary);
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  transition: all var(--transition-fast);
}

.toolbar-btn:hover {
  background: var(--bg-primary);
  color: var(--text-primary);
  border-color: var(--border-strong);
}

.toolbar-btn.active {
  background: var(--brand-primary);
  color: #ffffff;
  border-color: var(--brand-primary);
}

.toolbar-select {
  padding: 0.45rem 0.75rem;
  background: var(--bg-secondary);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  color: var(--text-primary);
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
}

/* Mind Map Canvas Viewport */
.mindmap-viewport {
  position: relative;
  width: 100%;
  height: 640px;
  background-color: var(--bg-primary);
  background-image: radial-gradient(var(--border-subtle) 1px, transparent 1px);
  background-size: 24px 24px;
  overflow: hidden;
  cursor: grab;
  user-select: none;
}

.mindmap-viewport.is-dragging-canvas {
  cursor: grabbing;
}

.mindmap-viewport.is-fullscreen {
  height: calc(100vh - 140px);
}

/* Transform Stage: moves with Pan & Zoom */
.mindmap-stage {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  transform-origin: 0 0;
  will-change: transform;
}

/* SVG Line Connections Layer */
.mindmap-svg-layer {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  overflow: visible;
  pointer-events: none;
}

.mindmap-branch-line {
  fill: none;
  stroke: var(--brand-primary);
  stroke-width: 2.5px;
  stroke-linecap: round;
  stroke-linejoin: round;
  transition: stroke 0.3s ease, stroke-width 0.2s ease;
  opacity: 0.85;
}

.mindmap-branch-line.hovered {
  stroke-width: 4px;
  opacity: 1;
}

/* HTML Interactive Node Layer */
.mindmap-nodes-layer {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
}

/* Mind Map Node Elements */
.mm-node {
  position: absolute;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.65rem 1.15rem;
  background: var(--bg-secondary);
  color: var(--text-primary);
  border: 2px solid var(--border-strong);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  transform: translate(-50%, -50%);
  transition: transform 0.15s ease, box-shadow 0.15s ease, border-color 0.15s ease;
  white-space: nowrap;
  user-select: none;
  z-index: 10;
}

.mm-node:hover {
  transform: translate(-50%, -50%) scale(1.03);
  box-shadow: var(--shadow-xl);
  border-color: var(--brand-primary);
  z-index: 12;
}

.mm-node.is-selected {
  border-color: var(--brand-primary);
  box-shadow: 0 0 0 3px var(--brand-primary-light), var(--shadow-xl);
  z-index: 14;
}

/* Node Hierarchy Level Variants */
.mm-node-root {
  background: linear-gradient(135deg, var(--brand-primary), #4338ca);
  color: #ffffff;
  border-color: #6366f1;
  font-size: 1.25rem;
  font-weight: 800;
  padding: 0.95rem 1.75rem;
  border-radius: var(--radius-xl);
  box-shadow: 0 8px 24px rgba(79, 70, 229, 0.35);
}

.mm-node-root .mm-node-emoji {
  font-size: 1.4rem;
}

.mm-node-level-1 {
  background: var(--bg-secondary);
  border-width: 2.5px;
  font-size: 1.05rem;
  font-weight: 700;
  padding: 0.75rem 1.35rem;
}

.mm-node-level-2 {
  font-size: 0.95rem;
  font-weight: 600;
  padding: 0.55rem 1rem;
}

.mm-node-level-3, .mm-node-level-4 {
  font-size: 0.875rem;
  font-weight: 500;
  padding: 0.45rem 0.85rem;
  border-width: 1.5px;
}

/* Node Emoji & Text */
.mm-node-emoji {
  font-size: 1.15rem;
  line-height: 1;
  flex-shrink: 0;
}

.mm-node-text {
  max-width: 280px;
  overflow: hidden;
  text-overflow: ellipsis;
}

/* Node Note Badge */
.mm-note-badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 18px;
  height: 18px;
  border-radius: var(--radius-full);
  background: var(--brand-accent-light);
  color: var(--brand-accent);
  font-size: 0.7rem;
  font-weight: 700;
  cursor: help;
}

/* Node Collapse / Expand Toggle Button */
.mm-collapse-btn {
  position: absolute;
  right: -12px;
  top: 50%;
  transform: translateY(-50%);
  width: 22px;
  height: 22px;
  border-radius: var(--radius-full);
  background: var(--bg-secondary);
  border: 1.5px solid var(--border-strong);
  color: var(--text-secondary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.75rem;
  font-weight: 800;
  cursor: pointer;
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-fast);
  z-index: 2;
}

.mm-collapse-btn:hover {
  background: var(--brand-primary);
  color: #ffffff;
  border-color: var(--brand-primary);
  transform: translateY(-50%) scale(1.15);
}

/* Node Context Action Floating Menu */
.node-context-menu {
  position: absolute;
  top: 100%;
  left: 50%;
  transform: translateX(-50%) translateY(8px);
  background: var(--bg-elevated);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-xl);
  padding: 0.35rem;
  display: flex;
  gap: 0.3rem;
  z-index: 100;
}

.context-menu-btn {
  padding: 0.35rem 0.6rem;
  background: var(--bg-secondary);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  color: var(--text-secondary);
  font-size: 0.75rem;
  font-weight: 600;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
  white-space: nowrap;
}

.context-menu-btn:hover {
  background: var(--brand-primary-light);
  color: var(--brand-primary);
}

.context-menu-btn.btn-danger:hover {
  background: var(--accent-rose-light);
  color: var(--accent-rose);
}

/* Floating Canvas Overlay Controls (Bottom Right) */
.canvas-floating-controls {
  position: absolute;
  bottom: 1.25rem;
  right: 1.25rem;
  background: var(--bg-secondary);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  display: flex;
  flex-direction: column;
  padding: 0.35rem;
  gap: 0.3rem;
  z-index: 20;
}

.floating-btn {
  width: 36px;
  height: 36px;
  border-radius: var(--radius-md);
  border: 1px solid transparent;
  background: var(--bg-secondary);
  color: var(--text-secondary);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.floating-btn:hover {
  background: var(--bg-tertiary);
  color: var(--text-primary);
  border-color: var(--border-subtle);
}

/* Floating Status Indicator */
.canvas-status-pill {
  position: absolute;
  bottom: 1.25rem;
  left: 1.25rem;
  background: var(--bg-secondary);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-full);
  padding: 0.4rem 0.85rem;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--text-muted);
  display: flex;
  align-items: center;
  gap: 0.5rem;
  box-shadow: var(--shadow-sm);
  z-index: 20;
}

.status-dot {
  width: 8px;
  height: 8px;
  border-radius: var(--radius-full);
  background: var(--accent-emerald);
}

/* Modal Overlay & Popups */
.mm-modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background: var(--bg-overlay);
  backdrop-filter: blur(4px);
  z-index: 9999;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1.5rem;
}

.mm-modal-card {
  background: var(--bg-secondary);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-xl);
  max-width: 580px;
  width: 100%;
  overflow: hidden;
  animation: modalScale 0.2s ease-out;
}

@keyframes modalScale {
  from { opacity: 0; transform: scale(0.95); }
  to { opacity: 1; transform: scale(1); }
}

.mm-modal-header {
  padding: 1.25rem 1.5rem;
  border-bottom: 1px solid var(--border-subtle);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.mm-modal-title {
  font-size: 1.2rem;
  font-weight: 700;
  margin: 0;
}

.mm-modal-close {
  background: none;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
  font-size: 1.25rem;
}

.mm-modal-body {
  padding: 1.5rem;
}

.mm-modal-footer {
  padding: 1rem 1.5rem;
  background: var(--bg-tertiary);
  border-top: 1px solid var(--border-subtle);
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 0.75rem;
}

/* Export Dropdown Menu */
.export-dropdown {
  position: relative;
  display: inline-block;
}

.export-menu {
  position: absolute;
  top: calc(100% + 6px);
  right: 0;
  background: var(--bg-secondary);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-xl);
  min-width: 230px;
  display: none;
  flex-direction: column;
  padding: 0.4rem;
  z-index: 100;
  animation: modalScale 0.15s ease-out;
}

.export-menu.is-open {
  display: flex;
}

.export-item {
  width: 100%;
  text-align: left;
  padding: 0.6rem 0.85rem;
  background: transparent;
  border: none;
  border-radius: var(--radius-md);
  color: var(--text-primary);
  font-size: 0.85rem;
  font-weight: 500;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  transition: all var(--transition-fast);
}

.export-item:hover {
  background: var(--brand-primary-light);
  color: var(--brand-primary);
}

/* Floating Overlay Canvas Controls */
.floating-controls,
.canvas-floating-controls {
  position: absolute;
  bottom: 1.25rem;
  right: 1.25rem;
  background: var(--bg-secondary);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  display: flex;
  flex-direction: column;
  padding: 0.35rem;
  gap: 0.3rem;
  z-index: 20;
}

/* Canvas Mini Help Badge */
.canvas-help-badge {
  position: absolute;
  bottom: 1.25rem;
  left: 1.25rem;
  background: var(--bg-secondary);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-full);
  padding: 0.4rem 0.85rem;
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--text-muted);
  display: flex;
  align-items: center;
  gap: 0.4rem;
  box-shadow: var(--shadow-sm);
  z-index: 20;
  pointer-events: none;
}

@media (max-width: 640px) {
  .canvas-help-badge {
    display: none;
  }
}

/* Mindmap Grid Pattern Overlay */
.mindmap-grid-pattern {
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image: radial-gradient(var(--border-subtle) 1px, transparent 1px);
  background-size: 24px 24px;
  opacity: 0.7;
}

/* Responsive Table Container */
.table-container {
  width: 100%;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-subtle);
}

/* Markdown Split Editor Responsive Grid */
.md-editor-grid {
  display: grid;
  grid-template-columns: 1fr 1.35fr;
  gap: 1.5rem;
}

@media (max-width: 900px) {
  .md-editor-grid {
    grid-template-columns: 1fr;
  }
}

/* Color Palettes Themes */
[data-mm-theme="cyber"] .mm-node-root {
  background: linear-gradient(135deg, #06b6d4, #3b82f6);
}
[data-mm-theme="forest"] .mm-node-root {
  background: linear-gradient(135deg, #059669, #10b981);
}
[data-mm-theme="sunset"] .mm-node-root {
  background: linear-gradient(135deg, #f97316, #ec4899);
}
[data-mm-theme="monochrome"] .mm-node-root {
  background: linear-gradient(135deg, #1e293b, #0f172a);
}