/* ═══════════════ PHASE 3: DESKTOP SPLIT VIEW ═══════════════ */
.desktop-panel {
  display: none;
}
#panelCenter {
  display: block; /* Mặc định hiện trên mobile */
}
/* Resize dividers – hidden on mobile */
.panel-divider {
  display: none;
}
/* Mặc định ẩn nút thu gọn header (sẽ chỉ hiện trên mobile) */
#headerCollapseBtn {
  display: none !important;
}

/* Global scroll containment: locks outer views and encapsulates scrolling within detailView */
html.detail-view-open, 
body.detail-view-open {
  overflow: hidden !important;
  height: 100% !important;
  height: 100dvh !important;
}
body.detail-view-open #desktopPanelsWrapper {
  overflow: hidden !important;
  height: 100% !important;
}
body.detail-view-open #panelCenter {
  height: 100% !important;
  overflow: hidden !important;
}
body.detail-view-open #mainContent {
  height: 100% !important;
  overflow: hidden !important;
}
body.detail-view-open #detailView {
  display: block !important;
  height: 100% !important;
  max-height: 100% !important;
  overflow-y: auto !important;
  overflow-x: hidden !important;
  -webkit-overflow-scrolling: touch !important;
}

@media (min-width: 1024px) {
  /* ── Mobile Safety Spacer: Hidden on desktop to prevent flex layout column issue ── */
  #_hdrScrollSpacer {
    display: none !important;
  }

  /* ── Main tabs: inside panelCenter on desktop ── */
  #panelCenter > .tab-bar {
    flex-shrink: 0;
    padding: 8px 8px 6px;
    gap: 3px;
    background: var(--bg);
    border-bottom: 1px solid var(--border);
    overflow: hidden;
  }
  #panelCenter > .tab-bar .tab {
    flex: 1 1 0;
    justify-content: center;
    min-width: 0;
    padding: 8px 4px;
    font-size: 12px;
    overflow: hidden;
    background: var(--surface2);
    color: var(--text);
    border-color: var(--border);
  }
  #panelCenter > .tab-bar .tab:hover:not(.active) {
    background: var(--surface);
    border-color: var(--accent);
    color: var(--accent);
  }
  /* When panel is narrow: hide label, show only icon */
  #panelCenter > .tab-bar .tab-label {
    display: none;
  }
  #panelCenter > .tab-bar .tab-icon {
    font-size: 16px;
  }
  /* When panel is wide enough: show label */
  #panelCenter > .tab-bar.tab-bar--wide .tab-label {
    display: inline;
  }
  #panelCenter > .tab-bar.tab-bar--wide .tab {
    padding: 8px 8px;
    white-space: nowrap;
  }
  #panelCenter > .tab-bar.tab-bar--wide .tab-label {
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
  }
  #panelCenter > .tab-bar.tab-bar--wide .tab-icon {
    font-size: 13px;
  }
  /* Icon-only mode: compact tabs, centered in bar */
  #panelCenter > .tab-bar:not(.tab-bar--wide) {
    justify-content: center;
  }
  #panelCenter > .tab-bar:not(.tab-bar--wide) .tab {
    flex: 0 0 auto;
    padding: 8px 12px;
  }

  /* ── Wrapper: fills remaining height after header ── */
  .desktop-layout {
    display: flex;
    flex: 1;
    min-height: 0;           /* crucial so flex children can shrink */
    overflow: hidden;
    background: var(--bg);
  }

  /* ── Center: scrollable content area ── */
  #panelCenter {
    flex: 1;
    min-width: 200px;
    display: flex;
    flex-direction: column;
    overflow: hidden;
    background: var(--bg);
  }

  /* Content inside center panel must scroll */
  #panelCenter > .content {
    flex: 1;
    overflow-y: auto;
    overflow-x: hidden;
    max-width: none !important;  /* Override the 900px/600px limit inside panels */
    margin: 0 !important;       /* Override auto centering from base .content */
    padding: 16px;
    width: 100%;
    box-sizing: border-box;
  }

  /* detailView also needs to scroll when inside center */
  #detailView {
    overflow-y: auto;
    overflow-x: hidden;
    max-height: 100%;
    padding-bottom: 24px;
  }

  /* Back button trên desktop: nhỏ gọn hơn */
  #detailView .back-btn {
    margin-bottom: 8px;
  }

  /* ── Center panel: grids must respond to container width, not viewport ── */
  #panelCenter #profileList,
  #panelCenter #staffList,
  #panelCenter #dashMyList,
  #panelCenter #dashHapjaList,
  #panelCenter #tvList,
  #panelCenter #bbList,
  #panelCenter #calEventList {
    grid-template-columns: repeat(auto-fill, minmax(240px, 1fr)) !important;
  }
  /* Timeline inside center: single-column, centered */
  #panelCenter #timelineList {
    display: block;
  }

  /* Form tabs in detail view: scroll horizontally, never clip */
  #panelCenter .form-tabs {
    flex-wrap: wrap;
  }

  /* Prevent text content inside center from overflowing */
  #panelCenter .content {
    overflow-x: hidden;
  }
  #panelCenter img, 
  #panelCenter canvas {
    max-width: 100%;
    height: auto;
  }

  /* Detail view content: word break to prevent overflow */
  #detailView {
    word-break: break-word;
    overflow-wrap: break-word;
  }

  /* ── Side panels ── */
  .desktop-panel {
    display: flex;
    flex-direction: column;
    min-height: 0;            /* allow flex shrink */
  }

  #panelLeft, #panelRight {
    width: 320px;
    min-width: 120px;
    flex-shrink: 0;
    overflow: hidden;         /* children scroll, not the panel itself */
    background: var(--surface2);
    border: none;
    display: flex;
    flex-direction: column;
  }
  #panelLeft {
    border-right: 1px solid var(--border);
  }
  #panelRight {
    border-left: 1px solid var(--border);
  }

  /* ── Pinned tab content: scrollable within panel ── */
  .desktop-pinned {
    display: flex !important;
    flex-direction: column;
    flex: 1;
    overflow-y: auto;
    overflow-x: hidden;
    padding: 14px 12px;
    min-height: 0;            /* allow flex shrink */
    word-break: break-word;   /* prevent text overflow */
  }
  /* Notes board fills remaining height in panel */
  .desktop-pinned #notesPanelList {
    flex: 1;
    min-height: 200px;
  }
  .desktop-pinned #notesPanelList.notes-board {
    min-height: 0;
    height: auto;
  }

  /* ── Drag-to-resize dividers ── */
  .panel-divider {
    display: block;
    width: 5px;
    cursor: col-resize;
    background: transparent;
    flex-shrink: 0;
    position: relative;
    z-index: 50;
    transition: background 0.2s;
  }
  .panel-divider:hover,
  .panel-divider.dragging {
    background: var(--accent);
    opacity: 0.5;
  }
  .panel-divider::after {
    content: '';
    position: absolute;
    left: -3px;
    right: -3px;
    top: 0;
    bottom: 0;  /* invisible wider hit area */
  }

  /* ── Prevent text selection while dragging ── */
  body.panel-resizing {
    cursor: col-resize !important;
    user-select: none !important;
    -webkit-user-select: none !important;
  }
  body.panel-resizing * {
    cursor: col-resize !important;
  }

  /* ── Components in side panels: responsive when narrow ── */
  #panelLeft .desktop-pinned,
  #panelRight .desktop-pinned {
    /* Force single-column grids for narrow panels */
  }
  #panelLeft #profileList,
  #panelRight #profileList,
  #panelLeft #staffList,
  #panelRight #staffList,
  #panelLeft #notesPanelList:not(.notes-board),
  #panelRight #notesPanelList:not(.notes-board),
  #panelLeft .priority-group,
  #panelRight .priority-group {
    display: block !important;
    grid-template-columns: none !important;
  }
  /* Dashboard stats: wrap to fit narrow space */
  #panelLeft .dash-stat,
  #panelRight .dash-stat {
    font-size: 11px;
    padding: 6px 8px;
    min-width: 0;
  }
  /* Profile cards: tighter in narrow panels */
  #panelLeft .profile-card,
  #panelRight .profile-card {
    padding: 10px 12px;
    gap: 8px;
  }
  /* Section headers: allow wrapping */
  #panelLeft .section-header,
  #panelRight .section-header {
    flex-wrap: wrap;
    gap: 4px;
  }
  /* Filter chips: scroll instead of overflow */  
  #panelLeft .chip,
  #panelRight .chip {
    font-size: 10px;
    padding: 5px 8px;
  }

  /* Panel text: prevent overflow (targeted, not wildcard) */
  #panelLeft .profile-card,
  #panelRight .profile-card,
  #panelLeft .staff-card,
  #panelRight .staff-card,
  #panelLeft .section-header,
  #panelRight .section-header,
  #panelLeft .dash-stat,
  #panelRight .dash-stat {
    overflow-wrap: break-word;
    word-wrap: break-word;
  }

  /* ── Performance: disable stagger animations inside panels ── */
  #panelLeft .profile-card,
  #panelRight .profile-card,
  #panelLeft .staff-card,
  #panelRight .staff-card,
  #panelLeft .dash-stat,
  #panelRight .dash-stat,
  #panelLeft .dash-card,
  #panelRight .dash-card,
  #panelLeft .stagger-item,
  #panelRight .stagger-item,
  #panelLeft .tree-node,
  #panelRight .tree-node {
    animation: none !important;
  }

  /* ── Performance: layout containment for panels ── */
  #panelLeft,
  #panelRight {
    contain: layout style;
  }

  /* ── Performance: GPU-accelerate profile cards for smoother hover ── */
  .desktop-layout .profile-card {
    will-change: transform;
    backface-visibility: hidden;
  }

  /* Dashboard funnel & stat grids: stack vertically */
  #panelLeft .dash-grid,
  #panelRight .dash-grid {
    grid-template-columns: 1fr !important;
    gap: 6px !important;
  }
  /* Profile cards inner: allow wrapping */
  #panelLeft .profile-card .badges,
  #panelRight .profile-card .badges {
    flex-wrap: wrap;
    gap: 3px;
  }
  /* Sub-tabs in profiles: allow wrapping */
  #panelLeft .form-tabs,
  #panelRight .form-tabs {
    flex-wrap: wrap;
    gap: 4px;
  }
  #panelLeft .form-tab,
  #panelRight .form-tab {
    font-size: 10px;
    padding: 6px 8px;
  }
  /* Stat numbers: smaller in panel */
  #panelLeft .stat-number,
  #panelRight .stat-number {
    font-size: 22px;
  }
  /* Notes filter bar: wrap */
  #panelLeft #notesFilterChips,
  #panelRight #notesFilterChips {
    flex-wrap: wrap;
  }

  /* Header must be a flex container parent so body stacks header + panels */
  body {
    display: flex;
    flex-direction: column;
    height: 100vh;
    overflow: hidden;
  }
  .header {
    flex-shrink: 0; /* header never shrinks */
    padding-right: 90px; /* Clear space for Telegram Mini App close/settings buttons */
  }

  /* ── Premium Vertical Divider for stacked panels in same column ── */
  .panel-vdivider {
    height: 12px !important;
    cursor: row-resize;
    background: var(--bg) !important;
    position: relative;
    border-top: 1px solid var(--border);
    border-bottom: 1px solid var(--border);
    margin: 8px 0;
    flex-shrink: 0;
    transition: background 0.2s;
  }
  
  .panel-vdivider::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 32px;
    height: 4px;
    border-radius: 2px;
    background: var(--border);
    transition: background 0.2s, width 0.2s;
  }

  .panel-vdivider:hover::after,
  .panel-vdivider.dragging::after {
    background: var(--accent);
    width: 48px;
  }
}

  /* ── Advanced Personal Notes Upgrade - Toolbar & Inline edit styling ── */
  .board-note {
    display: flex;
    flex-direction: column;
    position: absolute;
    border: 1px solid;
    border-radius: 12px;
    box-shadow: 0 4px 12px rgba(0,0,0,0.06);
    overflow: hidden;
    transition: box-shadow 0.2s, transform 0.2s;
  }
  
  .board-note:hover {
    box-shadow: 0 6px 18px rgba(0,0,0,0.12);
  }
  
  .board-note-title[contenteditable="true"],
  .board-note-content[contenteditable="true"] {
    outline: none;
    transition: background 0.15s;
  }
  
  .board-note-title[contenteditable="true"]:focus {
    background: rgba(0, 0, 0, 0.03);
    border-radius: 4px;
    padding: 0 4px;
  }

  .board-note-content[contenteditable="true"]:focus {
    background: rgba(0, 0, 0, 0.02);
    border-radius: 4px;
  }
  
  /* Modern Top Toolbar for Note Editing */
  .note-toolbar {
    display: none; /* Hidden by default, shown when note is focused */
    position: relative !important;
    height: 32px;
    background: rgba(0, 0, 0, 0.02) !important;
    border-bottom: 1px solid rgba(0, 0, 0, 0.06);
    align-items: center;
    justify-content: flex-start;
    gap: 4px;
    padding: 0 8px;
    z-index: 10;
  }
  
  [data-theme="dark"] .note-toolbar {
    background: rgba(255, 255, 255, 0.02) !important;
    border-bottom-color: rgba(255, 255, 255, 0.06);
  }
  
  .board-note:focus-within .note-toolbar {
    display: flex;
  }
  
  .note-toolbar-btn {
    background: none;
    border: none;
    border-radius: 4px;
    width: 24px;
    height: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    font-size: 11px;
    color: var(--text2);
    transition: background 0.15s, color 0.15s;
  }
  
  .note-toolbar-btn:hover {
    background: var(--surface2);
    color: var(--accent);
  }

  /* Embedded Draggable and Resizable Media Wrapper */
  .embedded-media-wrapper {
    position: absolute;
    border: 1px dashed transparent;
    cursor: move;
    display: inline-block;
    padding: 2px;
    box-sizing: border-box;
    overflow: visible;
    pointer-events: auto !important; /* Critical override since canvas is pointer-events: none */
  }
  
  .embedded-media-wrapper:hover {
    border-color: var(--accent);
  }
  
  .embedded-media-wrapper iframe,
  .embedded-media-wrapper img,
  .embedded-media-wrapper video {
    position: absolute !important;
    top: 0 !important;
    left: 0 !important;
    width: 100% !important;
    height: 100% !important;
    object-fit: cover !important;
    pointer-events: auto !important;
    border-radius: 4px;
    margin: 0 !important;
    padding: 0 !important;
    border: none !important;
  }

  .embedded-media-wrapper audio {
    position: absolute !important;
    top: 0 !important;
    left: 0 !important;
    width: 100% !important;
    height: 100% !important;
    pointer-events: auto !important;
    margin: 0 !important;
    padding: 0 !important;
  }

  .media-resize-handle {
    position: absolute;
    width: 8px;
    height: 8px;
    background: var(--accent);
    border: 1px solid white;
    border-radius: 50%;
    right: -4px;
    bottom: -4px;
    cursor: se-resize;
    display: none;
    z-index: 100;
    pointer-events: auto !important;
  }
  
  .embedded-media-wrapper:hover .media-resize-handle {
    display: block;
  }
  
  /* Media Loop Badge Indicator */
  .media-loop-btn {
    position: absolute;
    top: 4px;
    right: 4px;
    background: rgba(0,0,0,0.6);
    color: white;
    border: none;
    border-radius: 50%;
    width: 20px;
    height: 20px;
    font-size: 10px;
    cursor: pointer;
    display: none;
    align-items: center;
    justify-content: center;
    z-index: 100;
    pointer-events: auto !important;
  }
  
  /* Media Delete Button */
  .media-delete-btn {
    position: absolute;
    top: 4px;
    left: 4px;
    background: rgba(220, 38, 38, 0.85);
    color: white;
    border: none;
    border-radius: 50%;
    width: 20px;
    height: 20px;
    font-size: 10px;
    cursor: pointer;
    display: none;
    align-items: center;
    justify-content: center;
    z-index: 100;
    line-height: 1;
    font-weight: bold;
    transition: background 0.15s;
    pointer-events: auto !important;
  }
  
  .media-delete-btn:hover {
    background: rgb(220, 38, 38);
  }
  
  .embedded-media-wrapper:hover .media-loop-btn,
  .embedded-media-wrapper:hover .media-delete-btn {
    display: flex;
  }
  
  .media-loop-btn.active {
    background: var(--accent);
    animation: rotateLoop 4s linear infinite;
  }

  @keyframes rotateLoop {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
  }
  
  /* Floating window notes on desktop large view */
  .board-note-floating {
    position: fixed !important;
    z-index: 999999 !important;
    box-shadow: 0 10px 30px rgba(0,0,0,0.25) !important;
    border: 1.5px solid var(--accent) !important;
    background: var(--surface) !important;
  }

  .board-note-floating .board-note-header {
    cursor: move;
  }
  
  /* Embedded Media Link Popover modal inside note editor */
  .media-link-popover {
    position: absolute;
    top: 36px;
    bottom: auto;
    left: 8px;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 8px;
    box-shadow: 0 4px 16px rgba(0,0,0,0.15);
    padding: 8px;
    z-index: 100;
    display: flex;
    flex-direction: column;
    gap: 6px;
    width: 220px;
    animation: zoomFadeIn 0.15s ease;
  }
  
  .media-link-popover input {
    font-size: 10px;
    padding: 4px 6px;
    border-radius: 4px;
    border: 1px solid var(--border);
    outline: none;
    background: var(--surface2);
    color: var(--text);
  }

  /* Premium maximized aesthetics & zoom-scale spring transitions */
  .board-note-maximized {
    position: fixed !important;
    top: 50% !important;
    left: 50% !important;
    transform: translate(-50%, -50%) scale(1) !important;
    width: 85% !important;
    height: 80% !important;
    max-width: 950px !important;
    max-height: 750px !important;
    z-index: 1000000 !important;
    box-shadow: 0 24px 60px rgba(0, 0, 0, 0.3) !important;
    border-radius: 16px !important;
    background: var(--surface) !important;
    animation: noteZoomSpring 0.4s cubic-bezier(0.34, 1.56, 0.64, 1) forwards;
  }

  .board-note-maximized .board-note-title {
    font-size: 17px !important;
    font-weight: 600 !important;
  }

  .board-note-maximized .note-toolbar {
    height: 40px !important;
    gap: 8px !important;
    padding: 0 12px !important;
  }

  .board-note-maximized .note-toolbar-btn {
    width: 28px !important;
    height: 28px !important;
    font-size: 13px !important;
  }

  .board-note-maximized .board-note-content {
    font-size: 15px !important;
    line-height: 1.6 !important;
    padding: 16px 20px !important;
  }

  @keyframes noteZoomSpring {
    from {
      transform: translate(-50%, -50%) scale(0.92);
      opacity: 0;
    }
    to {
      transform: translate(-50%, -50%) scale(1);
      opacity: 1;
    }
  }

  .note-backdrop {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(15, 23, 42, 0.45);
    backdrop-filter: blur(12px) saturate(180%);
    -webkit-backdrop-filter: blur(12px) saturate(180%);
    z-index: 999998;
    animation: noteFadeIn 0.25s ease;
  }

  @keyframes noteFadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
  }

/* ── Force modern native-like container scrolling on mobile and narrow viewports ── */
@media (max-width: 1023px) {
  html {
    overflow: hidden !important;
    height: 100% !important;
  }
  body {
    display: flex !important;
    flex-direction: column !important;
    overflow: hidden !important;
    height: 100vh !important;
    height: 100dvh !important;
  }
  #desktopPanelsWrapper {
    display: block !important;
    flex: 1 !important;
    min-height: 0 !important; /* crucial for flex shrink */
    overflow-y: auto !important;
    overflow-x: hidden !important;
    -webkit-overflow-scrolling: touch !important;
  }
  #panelCenter {
    display: block !important;
    overflow: visible !important;
    height: auto !important;
  }
  #mainContent {
    overflow: visible !important;
    height: auto !important;
  }

  /* Locked background & isolated scrolling when detailed view is open */
  body.detail-view-open #desktopPanelsWrapper {
    overflow: hidden !important;
    display: flex !important;
    flex-direction: column !important;
  }
  body.detail-view-open #panelCenter {
    flex: 1 !important;
    height: 100% !important;
    display: flex !important;
    flex-direction: column !important;
    overflow: hidden !important;
  }
  body.detail-view-open #mainContent {
    flex: 1 !important;
    height: 100% !important;
    display: flex !important;
    flex-direction: column !important;
    overflow: hidden !important;
  }
  body.detail-view-open #detailView {
    display: block !important;
    flex: 1 !important;
    height: 100% !important;
    max-height: 100% !important;
    overflow-y: auto !important;
    overflow-x: hidden !important;
    -webkit-overflow-scrolling: touch !important;
  }

  /* Smooth Auto-Collapsible Header on Mobile with GPU acceleration */
  body .header {
    will-change: padding;
    transform: translateZ(0);
    backface-visibility: hidden;
    padding: 10px 12px 6px; /* Bỏ !important để JS có thể nội suy mượt mà */
    position: relative;
  }
  body .header.header-transitioning {
    transition: padding 0.3s cubic-bezier(0.16, 1, 0.3, 1) !important;
  }
  body .header.header-collapsed {
    padding: 4px 12px 4px !important; /* Thu gọn tối đa còn 4px lề trên/dưới */
  }
  
  /* Thiết lập transition siêu mượt cho từng phần tử con với max-height CHÍNH XÁC - Chỉ áp dụng khi toggle thủ công bằng nút bấm */
  .header .header-top {
    max-height: 58px;
    min-height: 0 !important; /* Cho phép co giãn mượt mà không bị giới hạn chiều cao tối thiểu */
    opacity: 1;
    margin-bottom: 8px; /* Bỏ !important để JS có thể nội suy */
    will-change: max-height, opacity, padding, margin;
    transform: translateZ(0);
  }
  .header.header-transitioning .header-top {
    transition: max-height 0.3s cubic-bezier(0.16, 1, 0.3, 1), 
                opacity 0.25s ease, 
                padding 0.3s cubic-bezier(0.16, 1, 0.3, 1), 
                margin 0.3s cubic-bezier(0.16, 1, 0.3, 1) !important;
  }
  
  .header .view-as-bar {
    max-height: 36px;
    min-height: 0 !important; /* Cho phép co giãn mượt mà */
    opacity: 1;
    margin-bottom: 6px; /* Bỏ !important để JS có thể nội suy */
    padding: 4px 8px; /* Bỏ !important để JS có thể nội suy */
    gap: 4px;
    will-change: max-height, opacity, padding, margin;
    transform: translateZ(0);
  }
  .header.header-transitioning .view-as-bar {
    transition: max-height 0.3s cubic-bezier(0.16, 1, 0.3, 1), 
                opacity 0.25s ease, 
                padding 0.3s cubic-bezier(0.16, 1, 0.3, 1), 
                margin 0.3s cubic-bezier(0.16, 1, 0.3, 1) !important;
  }
  .view-as-bar button, .vam-search-wrap input {
    font-size: 11px !important;
    padding: 2px 4px !important;
    height: 26px !important;
  }
  
  .header .semester-bar {
    max-height: 36px;
    min-height: 0 !important; /* Cho phép co giãn mượt mà */
    opacity: 1;
    margin-bottom: 6px; /* Bỏ !important để JS có thể nội suy */
    padding: 4px 6px; /* Bỏ !important để JS có thể nội suy */
    gap: 4px;
    will-change: max-height, opacity, padding, margin;
    transform: translateZ(0);
  }
  .header.header-transitioning .semester-bar {
    transition: max-height 0.3s cubic-bezier(0.16, 1, 0.3, 1), 
                opacity 0.25s ease, 
                padding 0.3s cubic-bezier(0.16, 1, 0.3, 1), 
                margin 0.3s cubic-bezier(0.16, 1, 0.3, 1) !important;
  }
  .semester-bar select, .semester-bar button {
    font-size: 11px !important;
    padding: 2px 6px !important;
    height: 26px !important;
  }
  
  /* Khi thu gọn (.header-collapsed), các phần tử sụp xuống mượt mà ngay lập tức theo tuyến tính */
  .header.header-collapsed .header-top,
  .header.header-collapsed .view-as-bar,
  .header.header-collapsed .semester-bar {
    max-height: 0 !important;
    padding-top: 0 !important;
    padding-bottom: 0 !important;
    margin-top: 0 !important;
    margin-bottom: 0 !important;
    overflow: hidden !important;
    opacity: 0 !important;
    pointer-events: none !important;
    border: none !important;
  }

  /* Bắt buộc Tab Bar trên di động & desktop nhỏ hiển thị thành 2 hàng cố định, xếp đều đặn */
  .tab-bar, #mainTabBar, .tab-bar--compact {
    display: flex !important;
    flex-wrap: wrap !important; /* Xếp thành 2 hàng */
    overflow: hidden !important; /* Không cuộn ngang */
    padding: 2px 36px 2px 0 !important; /* Chừa 36px lề phải cho nút toggle */
    gap: 4px 5px !important; /* Khoảng cách hàng 4px, khoảng cách cột 5px */
    width: 100% !important;
  }
  .tab-bar::-webkit-scrollbar, #mainTabBar::-webkit-scrollbar {
    display: none !important;
  }
  
  /* Mỗi tab pill chiếm calc(25% - 5px) để chia đều 4 tab mỗi hàng */
  .tab-bar .tab {
    flex: 1 1 calc(25% - 5px) !important;
    justify-content: center !important;
    padding: 5px 2px !important;
    font-size: 10.5px !important;
    white-space: nowrap !important;
    min-width: 0 !important;
    border-radius: 12px !important;
  }
  .tab-bar .tab-icon {
    font-size: 12px !important;
    margin-right: 2px !important;
  }
  
  /* Đặt nút toggle cố định ở góc dưới bên phải header, dịch sang trái một chút để tránh thanh dọc của Telegram */
  #headerCollapseBtn {
    display: flex !important;
    position: absolute;
    right: 16px; /* Tránh thanh dọc của Telegram */
    bottom: 8px; /* Cố định ở đáy header */
    z-index: 1000;
    align-items: center;
    justify-content: center;
    width: 26px;
    height: 26px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.15);
    border: 1px solid rgba(255, 255, 255, 0.2);
    color: white;
    cursor: pointer;
    transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  }
  #headerCollapseBtn:hover {
    background: rgba(255, 255, 255, 0.25);
    transform: scale(1.05);
  }
  #headerCollapseBtn:active {
    transform: scale(0.95);
  }
  
  /* Căn chỉnh nhẹ background nút toggle khi header bị thu gọn */
  .header.header-collapsed #headerCollapseBtn {
    background: rgba(0, 0, 0, 0.2);
    border-color: rgba(255, 255, 255, 0.1);
  }
  
  /* Light theme override for toggle button */
  [data-theme="light"] #headerCollapseBtn {
    background: rgba(0, 0, 0, 0.05);
    border: 1px solid rgba(0, 0, 0, 0.1);
    color: var(--text1);
  }
  [data-theme="light"] #headerCollapseBtn:hover {
    background: rgba(0, 0, 0, 0.08);
  }
  [data-theme="light"] .header.header-collapsed #headerCollapseBtn {
    background: rgba(0, 0, 0, 0.08);
    border-color: rgba(0, 0, 0, 0.08);
  }

  /* Retain larger top safety padding on large desktop */
  .notif-panel {
    padding-top: 55px !important;
  }

  /* ============ TIMELINE MOBILE & SMALL DESKTOP OVERRIDES ============ */
  .tl-container::before {
    left: calc(38% - 1.5px) !important;
  }
  .tl-container::after {
    left: calc(85% - 1.5px) !important;
  }
  .tl-left {
    flex: 0 0 38% !important;
    width: 38% !important;
    max-width: 38% !important;
    padding: 6px 6px !important;
  }
  .tl-right {
    flex: 0 0 47% !important;
    width: 47% !important;
    max-width: 47% !important;
    padding: 6px 6px !important;
  }
  .tl-btvn {
    flex: 0 0 15% !important;
    width: 15% !important;
    max-width: 15% !important;
    padding: 6px !important;
    justify-content: center !important;
  }
  .tl-btvn-card {
    justify-content: center !important;
    padding: 6px !important;
    width: 30px !important;
    height: 30px !important;
    min-width: 30px !important;
    max-width: 30px !important;
    margin: 0 auto !important;
    border-radius: 50% !important;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.05) !important;
    border-color: color-mix(in srgb, #0ea5e9 40%, var(--border)) !important;
  }
  .tl-btvn-card .tl-icon {
    margin-right: 0 !important;
    font-size: 14px !important;
  }
  .tl-btvn-card .tl-btvn-info {
    display: none !important;
  }
  .tl-btvn-card .tl-btn-group-btvn {
    display: none !important;
  }
  .tl-date {
    font-size: 8.5px !important;
    white-space: normal !important;
    word-break: normal !important;
    overflow-wrap: break-word !important;
    display: block !important;
    margin-top: 3px !important;
    opacity: 0.85 !important;
    line-height: 1.25 !important;
  }
  .tl-label {
    font-size: 11px !important;
    line-height: 1.25 !important;
    word-break: normal !important;
    overflow-wrap: break-word !important;
  }
}