/* ==========================================================================
   MID-SEM MASTER VAULT — DUAL-PANE SPLIT-VIEW WORKSPACE STYLES
   Curated by Vagish • KIIT School of Computer Engineering
   ========================================================================== */

/* Fullscreen Overlay Container */
.vault-split-view-container {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  width: 100vw;
  height: 100vh;
  z-index: 99999;
  display: flex;
  flex-direction: column;
  background: var(--bg-page, #f6eedb);
  color: var(--text-body, #59442b);
  font-family: var(--font-main, 'Plus Jakarta Sans', -apple-system, sans-serif);
  opacity: 0;
  pointer-events: none;
  visibility: hidden;
  transition: opacity 0.25s cubic-bezier(0.16, 1, 0.3, 1), visibility 0.25s ease;
  overflow: hidden;
}

.vault-split-view-container.open {
  opacity: 1;
  pointer-events: auto;
  visibility: visible;
}

/* While resizing, disable iframe pointer events to prevent dropped drag events */
.vault-split-view-container.is-resizing {
  user-select: none !important;
  -webkit-user-select: none !important;
  cursor: col-resize;
}

.vault-split-view-container.is-resizing.orientation-vertical {
  cursor: row-resize;
}

.vault-split-view-container.is-resizing iframe {
  pointer-events: none !important;
}

/* Control Navigation Bar */
.split-nav {
  height: 54px;
  min-height: 54px;
  background: var(--bg-glass, rgba(253, 247, 236, 0.92));
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border-card, #e5d6bc);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 1rem;
  z-index: 10;
  gap: 0.75rem;
}

.split-nav-left,
.split-nav-center,
.split-nav-right {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.split-nav-divider {
  width: 1px;
  height: 22px;
  background: var(--border-card, #e5d6bc);
  margin: 0 0.25rem;
}

/* Split Buttons */
.split-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  padding: 0.45rem 0.85rem;
  font-size: 0.82rem;
  font-weight: 600;
  font-family: inherit;
  border-radius: var(--radius-sm, 8px);
  border: 1px solid var(--border-card, #e5d6bc);
  background: var(--bg-card, #fdf7ec);
  color: var(--text-title, #362614);
  cursor: pointer;
  transition: all 0.18s ease;
  white-space: nowrap;
  line-height: 1;
}

.split-btn:hover {
  background: var(--bg-card-hover, #fffdf7);
  border-color: var(--accent-primary, #9c4221);
  color: var(--accent-primary, #9c4221);
  transform: translateY(-1px);
  box-shadow: var(--shadow-subtle, 0 1px 3px rgba(0,0,0,0.05));
}

.split-btn:active {
  transform: translateY(0);
}

.split-btn-primary {
  background: var(--accent-primary, #9c4221);
  color: #ffffff !important;
  border-color: var(--accent-primary, #9c4221);
}

.split-btn-primary:hover {
  background: var(--accent-primary-hover, #7c2d12);
  color: #ffffff !important;
  border-color: var(--accent-primary-hover, #7c2d12);
}

.split-btn-icon {
  padding: 0.45rem;
  min-width: 32px;
  min-height: 32px;
}

.split-btn-close {
  background: var(--bg-input, #eee3cb);
  border-color: var(--border-card, #e5d6bc);
  color: var(--text-title, #362614);
}

.split-btn-close:hover {
  background: #fee2e2;
  border-color: #ef4444;
  color: #b91c1c;
}

/* Preset Buttons Group */
.split-preset-group {
  display: inline-flex;
  align-items: center;
  background: var(--bg-input, #eee3cb);
  padding: 2px;
  border-radius: var(--radius-sm, 8px);
  border: 1px solid var(--border-card, #e5d6bc);
}

.split-preset-btn {
  padding: 0.35rem 0.6rem;
  font-size: 0.75rem;
  font-weight: 700;
  font-family: var(--font-code, 'JetBrains Mono', monospace);
  border: none;
  background: transparent;
  color: var(--text-muted, #7d6547);
  border-radius: 6px;
  cursor: pointer;
  transition: all 0.15s ease;
}

.split-preset-btn:hover {
  color: var(--text-title, #362614);
}

.split-preset-btn.active {
  background: var(--bg-card, #fdf7ec);
  color: var(--accent-primary, #9c4221);
  box-shadow: 0 1px 3px rgba(0,0,0,0.08);
}

/* Scroll Sync Toggle Button */
.split-toggle-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.42rem 0.8rem;
  font-size: 0.8rem;
  font-weight: 600;
  border-radius: var(--radius-sm, 8px);
  border: 1px solid var(--border-card, #e5d6bc);
  background: var(--bg-card, #fdf7ec);
  color: var(--text-title, #362614);
  cursor: pointer;
  transition: all 0.18s ease;
}

.split-toggle-btn.active {
  background: var(--accent-badge, #f7e2d2);
  border-color: var(--accent-primary, #9c4221);
  color: var(--accent-primary, #9c4221);
}

.split-toggle-btn .sync-badge {
  font-size: 0.7rem;
  font-weight: 800;
  font-family: var(--font-code, 'JetBrains Mono', monospace);
  padding: 0.1rem 0.35rem;
  border-radius: 4px;
  background: var(--bg-input, #eee3cb);
  color: var(--text-muted, #7d6547);
}

.split-toggle-btn.active .sync-badge {
  background: var(--accent-primary, #9c4221);
  color: #ffffff;
}

/* Workspace Body */
.split-workspace-body {
  flex: 1;
  display: flex;
  flex-direction: row;
  width: 100%;
  height: calc(100vh - 54px);
  position: relative;
  overflow: hidden;
}

/* Vertical / Stacked Mode */
.vault-split-view-container.orientation-vertical .split-workspace-body {
  flex-direction: column;
}

/* Panes */
.split-pane {
  display: flex;
  flex-direction: column;
  height: 100%;
  min-width: 18%;
  max-width: 82%;
  position: relative;
  overflow: hidden;
  background: var(--bg-page, #f6eedb);
}

.vault-split-view-container.orientation-vertical .split-pane {
  width: 100% !important;
  min-width: 100% !important;
  max-width: 100% !important;
  min-height: 18%;
  max-height: 82%;
}

.split-pane-a {
  border-right: none;
}

.split-pane-b {
  border-left: none;
}

/* Pane Toolbar */
.pane-toolbar {
  height: 42px;
  min-height: 42px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 0.75rem;
  background: var(--bg-card, #fdf7ec);
  border-bottom: 1px solid var(--border-card, #e5d6bc);
  gap: 0.5rem;
  z-index: 5;
}

.pane-title-group {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  flex: 1;
  min-width: 0;
}

.pane-badge {
  font-size: 0.68rem;
  font-weight: 800;
  font-family: var(--font-code, 'JetBrains Mono', monospace);
  padding: 0.2rem 0.45rem;
  border-radius: 4px;
  background: var(--accent-badge, #f7e2d2);
  color: var(--accent-primary, #9c4221);
  letter-spacing: 0.04em;
  white-space: nowrap;
}

.pane-badge-b {
  background: var(--bg-input, #eee3cb);
  color: var(--text-title, #362614);
}

/* Document Select Dropdown */
.pane-doc-select {
  flex: 1;
  max-width: 420px;
  height: 30px;
  padding: 0 1.8rem 0 0.6rem;
  font-size: 0.8rem;
  font-weight: 600;
  font-family: inherit;
  color: var(--text-title, #362614);
  background: var(--bg-input, #eee3cb);
  border: 1px solid var(--border-card, #e5d6bc);
  border-radius: 6px;
  outline: none;
  cursor: pointer;
  appearance: none;
  -webkit-appearance: none;
  background-image: url("data:image/svg+xml;charset=UTF-8,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%237d6547' stroke-width='2.2' stroke-linecap='round' stroke-linejoin='round'%3e%3cpolyline points='6 9 12 15 18 9'%3e%3c/polyline%3e%3c/svg%3e");
  background-repeat: no-repeat;
  background-position: right 0.5rem center;
  background-size: 13px;
  text-overflow: ellipsis;
  white-space: nowrap;
  overflow: hidden;
  transition: border-color 0.15s ease;
}

.pane-doc-select:focus {
  border-color: var(--accent-primary, #9c4221);
  box-shadow: 0 0 0 2px var(--accent-glow, rgba(156, 66, 33, 0.15));
}

.pane-doc-select optgroup {
  font-weight: 700;
  color: var(--accent-primary, #9c4221);
  background: var(--bg-card, #fdf7ec);
}

.pane-doc-select option {
  font-weight: 500;
  color: var(--text-body, #59442b);
  background: var(--bg-card, #fdf7ec);
  padding: 4px 8px;
}

/* Pane Mode Tabs (Doc vs Scratchpad in Pane B) */
.pane-mode-tabs {
  display: inline-flex;
  align-items: center;
  background: var(--bg-input, #eee3cb);
  padding: 2px;
  border-radius: 6px;
  border: 1px solid var(--border-card, #e5d6bc);
}

.pane-tab {
  padding: 0.25rem 0.55rem;
  font-size: 0.72rem;
  font-weight: 700;
  border: none;
  background: transparent;
  color: var(--text-muted, #7d6547);
  border-radius: 4px;
  cursor: pointer;
  transition: all 0.15s ease;
  white-space: nowrap;
}

.pane-tab.active {
  background: var(--bg-card, #fdf7ec);
  color: var(--accent-primary, #9c4221);
  box-shadow: 0 1px 2px rgba(0,0,0,0.06);
}

/* Pane Action Buttons */
.pane-actions {
  display: flex;
  align-items: center;
  gap: 0.3rem;
}

.pane-icon-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  border-radius: 6px;
  border: 1px solid var(--border-card, #e5d6bc);
  background: var(--bg-input, #eee3cb);
  color: var(--text-title, #362614);
  font-size: 0.8rem;
  cursor: pointer;
  text-decoration: none;
  transition: all 0.15s ease;
  line-height: 1;
}

.pane-icon-btn:hover {
  background: var(--bg-card-hover, #fffdf7);
  border-color: var(--accent-primary, #9c4221);
  color: var(--accent-primary, #9c4221);
}

/* Pane Iframe Wrapper */
.pane-iframe-wrapper {
  flex: 1;
  width: 100%;
  height: calc(100% - 42px);
  position: relative;
  background: var(--bg-page, #f6eedb);
}

.split-iframe {
  width: 100%;
  height: 100%;
  border: none;
  display: block;
  background: var(--bg-page, #f6eedb);
}

/* Split Gutter (Draggable Divider) */
.split-gutter {
  width: 10px;
  height: 100%;
  background: var(--bg-input, #eee3cb);
  border-left: 1px solid var(--border-card, #e5d6bc);
  border-right: 1px solid var(--border-card, #e5d6bc);
  cursor: col-resize;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  touch-action: none;
  user-select: none;
  -webkit-user-select: none;
  z-index: 20;
  transition: background-color 0.15s ease, border-color 0.15s ease;
}

.vault-split-view-container.orientation-vertical .split-gutter {
  width: 100%;
  height: 10px;
  cursor: row-resize;
  border-left: none;
  border-right: none;
  border-top: 1px solid var(--border-card, #e5d6bc);
  border-bottom: 1px solid var(--border-card, #e5d6bc);
}

.split-gutter::before {
  content: '';
  position: absolute;
  top: 0;
  bottom: 0;
  left: -8px;
  right: -8px;
  cursor: col-resize;
  z-index: 1;
}

.vault-split-view-container.orientation-vertical .split-gutter::before {
  top: -8px;
  bottom: -8px;
  left: 0;
  right: 0;
  cursor: row-resize;
}

.gutter-handle {
  width: 4px;
  height: 36px;
  background: var(--text-subtle, #a89377);
  border-radius: 4px;
  transition: all 0.15s ease;
  pointer-events: none;
}

.vault-split-view-container.orientation-vertical .gutter-handle {
  width: 36px;
  height: 4px;
}

.split-gutter:hover,
.split-gutter.dragging {
  background: var(--accent-badge, #f7e2d2);
  border-color: var(--accent-primary, #9c4221);
}

.split-gutter:hover .gutter-handle,
.split-gutter.dragging .gutter-handle {
  background: var(--accent-primary, #9c4221);
  transform: scaleY(1.2);
}

.vault-split-view-container.orientation-vertical .split-gutter:hover .gutter-handle,
.vault-split-view-container.orientation-vertical .split-gutter.dragging .gutter-handle {
  transform: scaleX(1.2);
}

/* Markdown Scratchpad View */
.scratchpad-view {
  display: flex;
  flex-direction: column;
  width: 100%;
  height: calc(100% - 42px);
  background: var(--bg-card, #fdf7ec);
  position: relative;
  overflow: hidden;
}

.scratchpad-view.hidden {
  display: none !important;
}

.scratchpad-toolbar {
  min-height: 40px;
  padding: 0.35rem 0.75rem;
  background: var(--bg-input, #eee3cb);
  border-bottom: 1px solid var(--border-card, #e5d6bc);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.5rem;
  flex-wrap: wrap;
}

.scratchpad-tools,
.scratchpad-actions {
  display: flex;
  align-items: center;
  gap: 0.3rem;
  flex-wrap: wrap;
}

.scratch-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.3rem;
  padding: 0.25rem 0.5rem;
  font-size: 0.75rem;
  font-weight: 600;
  font-family: inherit;
  border-radius: 5px;
  border: 1px solid var(--border-card, #e5d6bc);
  background: var(--bg-card, #fdf7ec);
  color: var(--text-title, #362614);
  cursor: pointer;
  transition: all 0.12s ease;
  line-height: 1;
}

.scratch-btn:hover {
  background: var(--bg-card-hover, #fffdf7);
  border-color: var(--accent-primary, #9c4221);
  color: var(--accent-primary, #9c4221);
}

.scratch-btn-danger {
  color: #b91c1c;
}

.scratch-btn-danger:hover {
  background: #fee2e2;
  border-color: #ef4444;
  color: #991b1b;
}

.scratchpad-status {
  font-size: 0.7rem;
  font-weight: 700;
  font-family: var(--font-code, 'JetBrains Mono', monospace);
  color: #16a34a;
  padding: 0.15rem 0.45rem;
  border-radius: 4px;
  background: rgba(22, 163, 74, 0.12);
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
  transition: opacity 0.2s ease;
}

.scratchpad-editor-wrapper {
  flex: 1;
  display: flex;
  flex-direction: column;
  position: relative;
  overflow: hidden;
}

.scratchpad-textarea {
  flex: 1;
  width: 100%;
  height: 100%;
  padding: 1rem 1.25rem;
  font-family: var(--font-code, 'JetBrains Mono', monospace);
  font-size: 0.88rem;
  line-height: 1.65;
  color: var(--text-body, #59442b);
  background: var(--bg-card, #fdf7ec);
  border: none;
  outline: none;
  resize: none;
  tab-size: 2;
  box-sizing: border-box;
}

.scratchpad-textarea::placeholder {
  color: var(--text-subtle, #a89377);
  font-style: italic;
  line-height: 1.5;
}

.scratchpad-preview {
  flex: 1;
  width: 100%;
  height: 100%;
  padding: 1.25rem;
  overflow-y: auto;
  font-family: var(--font-main, 'Plus Jakarta Sans', sans-serif);
  font-size: 0.92rem;
  line-height: 1.65;
  color: var(--text-body, #59442b);
  background: var(--bg-card, #fdf7ec);
  box-sizing: border-box;
}

.scratchpad-preview.hidden {
  display: none !important;
}

.scratchpad-preview h1,
.scratchpad-preview h2,
.scratchpad-preview h3 {
  color: var(--text-title, #362614);
  font-weight: 700;
  margin-top: 1rem;
  margin-bottom: 0.5rem;
}

.scratchpad-preview h1 { font-size: 1.35rem; border-bottom: 1px solid var(--border-card, #e5d6bc); padding-bottom: 0.3rem; }
.scratchpad-preview h2 { font-size: 1.15rem; }
.scratchpad-preview h3 { font-size: 1rem; }

.scratchpad-preview code {
  font-family: var(--font-code, 'JetBrains Mono', monospace);
  background: var(--bg-input, #eee3cb);
  padding: 0.15rem 0.35rem;
  border-radius: 4px;
  font-size: 0.85em;
  color: var(--accent-primary, #9c4221);
}

.scratchpad-preview pre {
  background: var(--bg-input, #eee3cb);
  padding: 0.85rem 1rem;
  border-radius: 8px;
  overflow-x: auto;
  border: 1px solid var(--border-card, #e5d6bc);
  margin: 0.75rem 0;
}

.scratchpad-preview pre code {
  background: transparent;
  padding: 0;
  color: var(--text-title, #362614);
}

.scratchpad-preview ul,
.scratchpad-preview ol {
  padding-left: 1.5rem;
  margin: 0.5rem 0;
}

.scratchpad-preview li {
  margin-bottom: 0.3rem;
}

.scratchpad-preview blockquote {
  border-left: 3px solid var(--accent-primary, #9c4221);
  padding-left: 0.85rem;
  margin: 0.75rem 0;
  color: var(--text-muted, #7d6547);
  font-style: italic;
}

.scratchpad-preview .math-block {
  background: var(--bg-input, #eee3cb);
  padding: 0.5rem 0.75rem;
  border-radius: 6px;
  font-family: var(--font-code, 'JetBrains Mono', monospace);
  color: var(--accent-primary, #9c4221);
  margin: 0.5rem 0;
}

/* Responsive adjustments */
@media (max-width: 860px) {
  .btn-hide-mobile {
    display: none !important;
  }
  
  .split-nav {
    padding: 0 0.5rem;
    gap: 0.4rem;
  }

  .pane-doc-select {
    max-width: 180px;
  }

  .split-btn {
    padding: 0.4rem 0.55rem;
    font-size: 0.75rem;
  }
}