:root {
    --font-sans: "Segoe UI Variable", "Segoe UI", system-ui, -apple-system, BlinkMacSystemFont, Roboto, "Helvetica Neue", Arial, sans-serif;
    
    /* Excel Green Theme - Light */
    --light-bg: #F0F2F5;
    --light-surface: #FFFFFF;
    --light-border: #E9E9E9;
    --light-text-primary: #1D1D1D;
    --light-text-secondary: #606060;
    --light-text-tertiary: #9CA3AF;
    --light-primary: #217346;
    --light-primary-hover: #185734;
    --light-primary-bg: #E9F5EE;
    --light-primary-bg-hover: #D8EADB;
    --light-shadow: rgba(0, 0, 0, 0.08);
    --light-selection-bg: #E9F5EE;
    --light-selection-border: #6CC999;
    --light-hover-bg: #F5F5F5;

    /* Excel Green Theme - Dark */
    --dark-bg: #18191A;
    --dark-surface: #242526;
    --dark-border: #3A3A3C;
    --dark-text-primary: #E4E6EB;
    --dark-text-secondary: #B0B3B8;
    --dark-text-tertiary: #6B7280;
    --dark-primary: #4CAF50;
    --dark-primary-hover: #81C784;
    --dark-primary-bg: #2E4B3E;
    --dark-primary-bg-hover: #385A49;
    --dark-shadow: rgba(0, 0, 0, 0.25);
    --dark-selection-bg: #2E4B3E;
    --dark-selection-border: #4CAF50;
    --dark-hover-bg: #3A3A3C;

    /* Grid Specific - Light */
    --light-grid-header-bg: #FFFFFF;
    --light-grid-cell-border: #E5E7EB;
    --light-grid-active-border: var(--light-primary);
    --light-grid-selection-bg: rgba(33, 115, 70, 0.1);
    --light-grid-highlight-row: #F0FAF5;
    --light-grid-crosshair-bg: #F3F4F6;
    
    /* Grid Specific - Dark */
    --dark-grid-header-bg: #1F2937;
    --dark-grid-cell-border: #374151;
    --dark-grid-active-border: var(--dark-primary);
    --dark-grid-selection-bg: rgba(76, 175, 80, 0.2);
    --dark-grid-highlight-row: #2E4B3E;
    --dark-grid-crosshair-bg: #2d3748;
}

body[data-theme="light"] {
    --bg-color: var(--light-bg);
    --surface-color: var(--light-surface);
    --border-color: var(--light-border);
    --text-primary: var(--light-text-primary);
    --text-secondary: var(--light-text-secondary);
    --text-tertiary: var(--light-text-tertiary);
    --primary-color: var(--light-primary);
    --primary-hover: var(--light-primary-hover);
    --primary-bg: var(--light-primary-bg);
    --primary-bg-hover: var(--light-primary-bg-hover);
    --shadow-color: var(--light-shadow);
    --danger-color: #DC2626;
    --danger-hover: #B91C1C;
    --modal-bg: rgba(17, 24, 39, 0.6);
    --selection-bg: var(--light-selection-bg);
    --selection-border: var(--light-selection-border);
    --hover-bg: var(--light-hover-bg);

    --grid-header-bg: var(--light-grid-header-bg);
    --grid-cell-border: var(--light-grid-cell-border);
    --grid-active-cell-border: 2px solid var(--light-grid-active-border);
    --grid-selection-color: var(--light-grid-selection-bg);
    --grid-highlight-row: var(--light-grid-highlight-row);
    --grid-crosshair-bg: var(--light-grid-crosshair-bg);
    --grid-header-highlight-bg: #F3F4F6;
    --grid-header-active-bg: var(--light-primary);
    --grid-header-active-text: #FFFFFF;
    --grid-frozen-border: 2px solid #9CA3AF;
    --grid-indicator-color: var(--light-primary);
    --grid-lock-color: #9CA3AF;
    --grid-editor-bg: #ffffff;
    --lock-active-color: #FEE2E2;

    /* Gantt variables */
    --gantt-bar-bg: var(--light-primary);
    --gantt-bar-progress-bg: var(--light-primary-hover);
    --gantt-grid-line-color: var(--light-border);
    --gantt-today-highlight-color: var(--light-primary-bg);
    --gantt-header-bg: var(--light-surface);
}

body[data-theme="dark"] {
    --bg-color: var(--dark-bg);
    --surface-color: var(--dark-surface);
    --border-color: var(--dark-border);
    --text-primary: var(--dark-text-primary);
    --text-secondary: var(--dark-text-secondary);
    --text-tertiary: var(--dark-text-tertiary);
    --primary-color: var(--dark-primary);
    --primary-hover: var(--dark-primary-hover);
    --primary-bg: var(--dark-primary-bg);
    --primary-bg-hover: var(--dark-primary-bg-hover);
    --shadow-color: var(--dark-shadow);
    --danger-color: #F87171;
    --danger-hover: #EF4444;
    --modal-bg: rgba(10, 10, 10, 0.8);
    --selection-bg: var(--dark-selection-bg);
    --selection-border: var(--dark-selection-border);
    --hover-bg: var(--dark-hover-bg);

    --grid-header-bg: var(--dark-grid-header-bg);
    --grid-cell-border: var(--dark-grid-cell-border);
    --grid-active-cell-border: 2px solid var(--dark-grid-active-border);
    --grid-selection-color: var(--dark-grid-selection-bg);
    --grid-highlight-row: var(--dark-grid-highlight-row);
    --grid-crosshair-bg: var(--dark-grid-crosshair-bg);
    --grid-header-highlight-bg: #374151;
    --grid-header-active-bg: var(--dark-primary);
    --grid-header-active-text: #111827;
    --grid-frozen-border: 2px solid #6B7280;
    --grid-indicator-color: #818CF8;
    --grid-lock-color: #6B7280;
    --grid-editor-bg: #374151;
    --lock-active-color: #7f1d1d;
    
    /* Gantt variables */
    --gantt-bar-bg: var(--dark-primary);
    --gantt-bar-progress-bg: var(--dark-primary-hover);
    --gantt-grid-line-color: var(--dark-border);
    --gantt-today-highlight-color: var(--dark-primary-bg);
    --gantt-header-bg: var(--dark-surface);
}

*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    font-family: var(--font-sans);
    background-color: var(--bg-color);
    color: var(--text-primary);
    font-size: 14px;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    height: 100vh;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    transition: background-color 0.2s, color 0.2s;
}

#grid-container[data-font-size="small"] { --grid-font-size: 11px; }
#grid-container[data-font-size="medium"] { --grid-font-size: 13px; }
#grid-container[data-font-size="large"] { --grid-font-size: 15px; }
#grid tbody td { font-size: var(--grid-font-size, 13px); }


/* ==========================================================================
   General UI Components
   ========================================================================== */
#app {
    display: flex;
    flex-direction: column;
    height: 100vh;
    overflow: hidden;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 10px 16px;
    border-radius: 6px;
    border: 1px solid transparent;
    font-weight: 600;
    font-size: 14px;
    cursor: pointer;
    transition: all 0.2s ease;
    white-space: nowrap;
}
.btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}
.btn.btn-text {
    background-color: transparent;
    border: none;
    color: var(--text-secondary);
    padding: 6px 10px;
    font-size: 13px;
    font-weight: 500;
    border-radius: 6px;
    height: 28px;
}
.btn.btn-text:hover {
    background-color: var(--hover-bg);
    color: var(--text-primary);
}


.btn.primary, .btn-primary {
    background-color: var(--primary-color);
    color: white;
}
.btn.primary:hover, .btn-primary:hover {
    background-color: var(--primary-hover);
}

.btn.secondary, .btn-secondary {
    background-color: var(--surface-color);
    color: var(--text-secondary);
    border: 1px solid var(--border-color);
}
.btn.secondary:hover, .btn-secondary:hover {
    background-color: var(--hover-bg);
}

.btn.danger {
    background-color: var(--danger-color);
    color: white;
}
.btn.danger:hover {
    background-color: var(--danger-hover);
}


.icon-btn {
    background-color: transparent;
    border: none;
    color: var(--text-secondary);
    width: 32px;
    height: 32px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.2s ease;
    flex-shrink: 0;
}
.icon-btn:hover {
    background-color: var(--hover-bg);
    color: var(--text-primary);
}
.icon-btn.danger:hover {
    background-color: #FEE2E2;
    color: var(--danger-color);
}
body[data-theme="dark"] .icon-btn.danger:hover {
    background-color: #3f2222;
}

.separator-bar, .ribbon-separator {
    width: 1px;
    background-color: var(--border-color);
    height: 24px;
    margin: 0 8px;
}

.icon {
    width: 16px;
    height: 16px;
    vertical-align: middle;
    flex-shrink: 0;
}


/* ==========================================================================
   Dashboard: Main Layout
   ========================================================================== */
.explorer-window {
    width: 100%;
    height: 100%;
    background-color: var(--surface-color);
    border: 1px solid var(--border-color);
    box-shadow: 0 8px 24px var(--shadow-color);
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

.explorer-ribbon {
    padding: 8px 12px;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    flex-shrink: 0;
}
.ribbon-left, .ribbon-center, .ribbon-right { display: flex; align-items: center; gap: 8px; }
.ribbon-center { justify-content: center; flex-grow: 1; }
.ribbon-right { justify-content: flex-end; }


.explorer-body { display: flex; flex-grow: 1; overflow: hidden; }

.navigation-pane {
    width: 240px;
    padding: 0 8px 8px 8px;
    border-right: 1px solid var(--border-color);
    overflow-y: auto;
    flex-shrink: 0;
    display: flex;
    flex-direction: column;
}
.navigation-pane.sidebar-animatable {
    transition: width 0.3s cubic-bezier(0.4, 0, 0.2, 1), padding 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}


.main-content { flex-grow: 1; display: flex; flex-direction: column; overflow: hidden; }

.content-header {
    display: flex;
    align-items: center;
    padding: 10px 16px;
    border-bottom: 1px solid var(--border-color);
    gap: 12px;
    flex-shrink: 0;
    background-color: var(--bg-color);
}

.content-view { flex-grow: 1; overflow: auto; padding: 8px; }

.status-bar {
    padding: 6px 16px;
    border-top: 1px solid var(--border-color);
    font-size: 12px;
    color: var(--text-secondary);
    display: flex;
    justify-content: space-between;
    flex-shrink: 0;
}

.explorer-body.sidebar-collapsed .navigation-pane { width: 56px; padding: 0 8px 8px 8px; }
.sidebar-collapsed .nav-item a, .sidebar-collapsed .tree-item-self a { justify-content: center; }
.sidebar-collapsed .nav-item span, .sidebar-collapsed .tree-item-self a span, .sidebar-collapsed .workspace-item a span { display: none; }
.sidebar-collapsed .nav-item .icon, .sidebar-collapsed .tree-item-self .icon, .sidebar-collapsed .workspace-item .icon { margin: 0; }
.sidebar-collapsed .nav-separator { margin: 12px 4px; }
.sidebar-collapsed .new-dropdown .btn-text { display: none; }
.sidebar-collapsed #folder-nav-list, .sidebar-collapsed .sidebar-section-header { display: none; }
.sidebar-collapsed .sidebar-header { justify-content: center; }


/* ==========================================================================
   Dashboard: Component Styles
   ========================================================================== */

#dashboard-logo-link {
    display: flex;
    align-items: center;
    justify-content: center;
    height: 36px;
    padding: 4px;
    border-radius: 6px;
    transition: background-color 0.2s ease;
}
#dashboard-logo-link:hover {
    background-color: var(--hover-bg);
}
#dashboard-logo-link img {
    height: 100%;
    width: auto;
    object-fit: contain;
}

.ribbon-button {
    display: inline-flex; align-items: center; gap: 6px; background: none;
    border: 1px solid transparent; border-radius: 6px; padding: 6px 10px;
    cursor: pointer; font-size: 13px; color: var(--text-primary); transition: all 0.2s ease;
    text-decoration: none;
}
.ribbon-button:hover { background-color: var(--hover-bg); }
.ribbon-button .icon { width: 18px; height: 18px; margin: 0; }
.ribbon-button span { margin-right: 4px; }
.ribbon-button.active { background-color: var(--selection-bg); color: var(--primary-color); }
.ribbon-group { display: flex; gap: 4px; }

.header-actions { display: flex; align-items: center; gap: 8px; margin-left: auto; }

.user-profile { position: relative; }
.user-avatar {
    width: 32px; height: 32px; border-radius: 50%; background-color: var(--primary-color);
    color: white; display: flex; align-items: center; justify-content: center;
    font-weight: 600; cursor: pointer; font-size: 14px; user-select: none; transition: filter 0.2s ease;
}
.user-avatar:hover { filter: brightness(1.1); }

.new-dropdown { position: relative; }
.new-dropdown .new-btn { padding: 6px 12px 6px 8px; }
.new-btn .dropdown-arrow {
    width: 0; height: 0; border-left: 4px solid transparent;
    border-right: 4px solid transparent; border-top: 4px solid currentColor;
    margin-left: 6px;
}

.new-dropdown-menu, .user-dropdown-menu {
    display: none; position: absolute; background: var(--surface-color);
    border: 1px solid var(--border-color); border-radius: 8px;
    box-shadow: 0 4px 12px var(--shadow-color); z-index: 100;
    padding: 8px; opacity: 0; transform: translateY(-10px);
    transition: opacity 0.2s ease, transform 0.2s ease;
}
.new-dropdown-menu.show, .user-dropdown-menu.show { display: block; opacity: 1; transform: translateY(0); }
.new-dropdown-menu { top: calc(100% + 8px); left: 0; width: 220px; }
.user-dropdown-menu { top: calc(100% + 8px); right: 0; width: 200px; }
.new-dropdown-item, .user-dropdown-menu a {
    display: flex; align-items: center; gap: 12px; padding: 8px 10px;
    border-radius: 6px; text-decoration: none; color: var(--text-primary); font-size: 14px; cursor: pointer;
}
.new-dropdown-item .icon { width: 20px; height: 20px; }
.new-dropdown-item:hover, .user-dropdown-menu a:hover { background-color: var(--hover-bg); }
.dropdown-separator { height: 1px; background-color: var(--border-color); margin: 8px 0; }
.user-dropdown-header {
    padding: 8px 10px 12px;
    font-weight: 600;
    color: var(--text-primary);
    border-bottom: 1px solid var(--border-color);
    margin: -8px -8px 8px -8px;
    padding-left: 18px;
}
.nav-list { list-style: none; display: flex; flex-direction: column; gap: 2px; }

.nav-item a {
    display: flex; align-items: center; padding: 8px 12px; border-radius: 6px;
    text-decoration: none; color: var(--text-primary); font-size: 14px;
    transition: background-color 0.2s ease, color 0.2s ease;
    cursor: pointer;
}
.nav-item .icon { width: 18px; height: 18px; margin-right: 12px; }
.nav-item .icon-img {
    width: 18px;
    height: 18px;
    object-fit: contain;
}

.nav-item a:hover { background-color: var(--hover-bg); }
.nav-item a.active { background-color: var(--selection-bg); font-weight: 600; color: var(--primary-color); }
.nav-item a.active .icon { color: var(--primary-color); }
.nav-separator { height: 1px; background-color: var(--border-color); margin: 12px 0; }
.sidebar-section-header {
    display: flex;
    justify-content: flex-start;
    align-items: center;
    padding: 4px 6px;
}

.ismartflow-tab a:hover {
    background-color: #F3E8FF;
}
body[data-theme="dark"] .ismartflow-tab a:hover {
    background-color: #3c2a5c;
}
.ismartflow-tab a.active {
    background-color: #F3E8FF;
    color: #581C87;
    font-weight: 600;
}
body[data-theme="dark"] .ismartflow-tab a.active {
    background-color: #3c2a5c;
    color: #d8b4fe;
}


#folder-collapse-toggle {
    width: 24px;
    height: 24px;
}
#folder-collapse-toggle .icon {
    width: 18px;
    height: 18px;
}

.content-header-main { display: flex; flex-grow: 1; align-items: center; gap: 8px; }
#dashboard-context-actions { margin-left: 16px; }
#dashboard-context-actions .btn { padding: 8px 12px; height: 36px; }
#dashboard-context-actions .btn svg { width: 16px; height: 16px; }

.address-bar {
    flex-grow: 1;
    height: 36px;
    background-color: var(--surface-color);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    box-shadow: 0 1px 2px var(--shadow-color);
    display: flex;
    align-items: center;
}
.breadcrumbs { display: flex; align-items: center; list-style: none; flex-grow: 1; white-space: nowrap; overflow: hidden; height: 100%; padding: 0 10px; }
.breadcrumbs a, .breadcrumbs > span {
    padding: 0 8px;
    border-radius: 4px;
    color: var(--text-secondary);
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 14px;
    cursor: pointer;
}
.breadcrumbs a:hover { background-color: var(--hover-bg); color: var(--text-primary);}
.breadcrumb-separator { color: var(--text-tertiary); margin: 0; }
.breadcrumbs > span { font-weight: 600; color: var(--text-primary); }

.search-box {
    display: flex;
    align-items: center;
    background-color: var(--surface-color);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    box-shadow: 0 1px 2px var(--shadow-color);
    height: 36px;
    padding: 0 10px;
    width: 240px;
    transition: border-color 0.2s ease, box-shadow 0.2s ease;
}
.search-box:focus-within {
    border-color: var(--primary-color);
    box-shadow: 0 1px 2px var(--shadow-color), 0 0 0 2px var(--primary-bg);
}
.search-box .icon { width: 16px; height: 16px; margin-right: 8px; color: var(--text-secondary); }
.search-box input { border: none; outline: none; background: none; width: 100%; color: var(--text-primary); font-size: 14px; }
.empty-state { padding: 40px; text-align: center; color: var(--text-secondary); }

.sidebar-header {
    display: flex;
    justify-content: flex-end;
    padding: 8px 4px;
}
#sidebar-toggle-btn {
    width: 32px;
    height: 32px;
}
#sidebar-toggle-btn .icon {
    width: 20px;
    height: 20px;
}


/* Sidebar Tree View */
#folder-nav-list { padding: 0; margin: 0; list-style: none; }
.workspace-item a {
    display: flex; align-items: center; padding: 8px 12px; border-radius: 6px; text-decoration: none;
    color: var(--text-primary); font-weight: 600; text-transform: uppercase; font-size: 13px;
    letter-spacing: 0.5px;
}
.workspace-item .icon { margin-right: 12px; color: var(--text-secondary); }
.workspace-item a:hover { background-color: var(--hover-bg); }
.workspace-item a.active { background-color: var(--selection-bg); }
.tree-item { list-style: none; padding-left: 20px; }
.tree-item-self { display: flex; align-items: center; height: 32px; }
.tree-item-self a { flex-grow: 1; padding: 6px 8px 6px 0; border-radius: 4px; }
.tree-item-self a .icon { margin-right: 8px; }
.tree-toggle {
    width: 20px; height: 20px; flex-shrink: 0;
    display: flex; align-items: center; justify-content: center;
    cursor: pointer; border-radius: 4px; margin-right: 4px;
}
.tree-toggle:hover { background-color: var(--hover-bg); }
.tree-toggle .icon { width: 16px; height: 16px; color: var(--text-secondary); margin: 0; transition: transform 0.15s ease-in-out; }
.tree-item.collapsed .tree-toggle .icon { transform: rotate(-90deg); }
.nav-list-tree { list-style: none; padding: 0; margin: 0; }
.nav-list-tree.level-0 > .tree-item { padding-left: 0; }


/* ==========================================================================
   Dashboard: View Styles
   ========================================================================== */

.details-view { width: 100%; border-collapse: collapse; user-select: none; }
.details-view th {
    text-align: left; padding: 10px 12px; font-weight: 600; font-size: 12px;
    color: var(--text-secondary); border-bottom: 2px solid var(--border-color);
    position: sticky; top: -8px; background-color: var(--surface-color); z-index: 1;
}
.details-view td {
    padding: 8px 12px;
    font-size: 13px;
    white-space: nowrap; overflow: hidden;
    text-overflow: ellipsis; border-bottom: 1px solid var(--border-color);
    transition: background-color 0.2s ease;
}
.details-view tbody tr { cursor: pointer; }
.details-view .dashboard-group-content-tbody tr:hover,
.details-view > tbody > tr:hover { 
    background-color: var(--hover-bg); 
}
.details-view .dashboard-group-content-tbody tr.selected,
.details-view > tbody > tr.selected { 
    background-color: var(--selection-bg); 
    color: var(--primary-color);
    outline: 1px solid var(--selection-border);
    outline-offset: -1px;
}
body[data-theme="dark"] .details-view > tbody > tr.selected {
    color: var(--text-primary);
}
.details-view .dashboard-group-content-tbody tr.selected td,
.details-view > tbody > tr.selected td {
    border-bottom-color: var(--selection-border);
}
.details-view .dashboard-group-content-tbody tr.selected:hover,
.details-view > tbody > tr.selected:hover {
    background-color: var(--selection-bg); 
}

.details-view .item-name-cell { display: flex; align-items: center; gap: 12px; }
.details-view .item-name-cell .icon { width: 20px; height: 20px; margin: 0; }
.details-view .folder-icon { color: #FFCA28; }

.shared-with-cell { cursor: default; }
.shared-with-cell[title]:hover { text-decoration: underline; cursor: help; }
.details-view .item-name-cell .doc-icon {
    color: #10B981;
}
.details-view .item-name-cell .form-icon {
    color: #8B5CF6;
}
.details-view .item-name-cell .doc-icon svg {
    width: 18px;
    height: 18px;
    stroke-width: 2;
}
.dashboard-col-header-name { width: 35%; }
.dashboard-col-header-actions { width: 40px; padding: 0 !important; text-align: right !important; }
.dashboard-th-content { display: flex; align-items: center; gap: 8px; justify-content: flex-end; }
.column-visibility-btn { width: 24px !important; height: 24px !important; }
.column-visibility-btn:hover { background-color: var(--hover-bg); }
.trash-actions { display: flex; gap: 8px; }
.trash-item-row { cursor: default; }
.trash-item-row:hover { background-color: var(--surface-color); }
.archived-item-row { cursor: pointer; }
.archived-item-row:hover { background-color: var(--hover-bg); }


.icons-view {
    display: flex;
    flex-direction: column;
    gap: 16px;
    padding: 8px;
}
.icon-item {
    display: flex; flex-direction: column; text-align: center;
    padding: 12px 8px; border-radius: 6px; cursor: pointer;
    border: 1px solid transparent; transition: all 0.2s ease; position: relative;
    justify-content: space-between;
}
.icon-item:hover { background-color: var(--hover-bg); }
.icon-item.selected { background-color: var(--selection-bg); border-color: var(--selection-border); }
.icon-item .item-icon {
    width: 48px; height: 48px; margin: 0 auto 12px auto;
    display: flex; align-items: center; justify-content: center; position: relative;
}
.icon-item .item-icon .icon-main { width: 100%; height: 100%; }
.icon-item .item-name {
    font-size: 13px; line-height: 1.4; display: -webkit-box;
    -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; word-break: break-word;
    margin-bottom: 8px;
}
.item-footer {
    font-size: 12px; color: var(--text-secondary); width: 100%;
    text-align: center; white-space: nowrap; overflow: hidden;
    text-overflow: ellipsis; padding-top: 8px; border-top: 1px solid var(--border-color);
}
.icon-item.selected .item-footer { border-top-color: var(--selection-border); }
.share-indicator { position: absolute; top: -2px; right: -2px; color: var(--text-secondary); }
.share-indicator svg { width: 14px; height: 14px; }
.icons-view .folder-icon { color: #FFCA28; }
.icons-view .doc-icon,
.grid-item .doc-icon {
    color: var(--primary-color);
}
.icons-view .form-icon,
.grid-item .form-icon {
    color: #8B5CF6;
}
.icons-view-content {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
    gap: 16px;
}


.grid-view { padding: 8px; }
.grid-section, .grid-group { margin-bottom: 24px; }
.grid-section-title {
    font-size: 16px; font-weight: 600; margin-bottom: 12px;
    padding: 0 8px; color: var(--text-primary);
}
.grid-view-content .grid-container {
    display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 16px;
}
.grid-item {
    background-color: var(--surface-color); border: 1px solid var(--border-color);
    border-radius: 8px; padding: 12px; cursor: pointer;
    transition: all 0.2s ease; display: flex; flex-direction: column;
    justify-content: space-between; min-height: 90px;
}
.grid-item:hover { border-color: var(--primary-color); box-shadow: 0 4px 8px var(--shadow-color); }
.grid-item.selected { background-color: var(--selection-bg); border-color: var(--selection-border); }
.grid-item-header { display: flex; align-items: center; gap: 10px; margin-bottom: 12px; }
.grid-item-header .item-name {
    font-weight: 600; flex-grow: 1; white-space: nowrap;
    overflow: hidden; text-overflow: ellipsis;
}
.grid-item-header .icon { width: 24px; height: 24px; margin: 0; }
.grid-item-header .folder-icon { color: #FFCA28; }

.favorite-icon { color: var(--text-secondary); cursor: pointer; }
.favorite-icon .icon { width: 18px; height: 18px; }
.favorite-icon.is-favorite { color: #FFD700; }
.favorite-icon.is-favorite svg { fill: #FFD700; }
.grid-item-footer {
    display: flex; justify-content: space-between; font-size: 11px;
    color: var(--text-secondary); align-items: center;
}
.owner-info { display: flex; align-items: center; gap: 6px; }
.owner-info .icon { width: 14px; height: 14px; margin: 0; }

/* Folder Item Counts */
.grid-item-header .folder-item-count {
    margin-left: 8px;
    font-size: 11px;
    font-weight: 500;
    color: var(--text-tertiary);
    background-color: var(--bg-color);
    padding: 2px 6px;
    border-radius: 10px;
}
.item-name-cell .icon-container-list {
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 20px; /* Match icon width */
    height: 20px; /* Match icon height */
}
.icon-container-list .folder-item-count-icon {
    position: absolute;
    bottom: -4px;
    right: -6px;
    font-size: 10px;
    min-width: 16px;
    height: 16px;
    padding: 0 4px;
}
.icon-item .item-icon .folder-item-count-icon {
    position: absolute;
    bottom: 0px;
    right: 0px;
    font-size: 10px;
    min-width: 16px;
    height: 16px;
    padding: 0 4px;
}
.icon-item .folder-item-count-icon, .icon-container-list .folder-item-count-icon {
    background-color: var(--surface-color);
    color: var(--text-secondary);
    border: 1px solid var(--border-color);
    border-radius: 50%;
    font-weight: 600;
    display: flex;
    align-items: center;
    justify-content: center;
    line-height: 1;
    box-shadow: 0 1px 3px var(--shadow-color);
}

/* Favorite Indicators */
.icon-container-grid {
    position: relative;
    width: 24px;
    height: 24px;
    flex-shrink: 0;
}
.item-icon { /* for icons-view */
    position: relative;
}
.favorite-indicator-grid, .favorite-indicator-overlay, .favorite-indicator-icon-view {
    position: absolute;
    line-height: 1;
    z-index: 1;
    color: #FFD700;
}
.favorite-indicator-grid svg, .favorite-indicator-overlay svg, .favorite-indicator-icon-view svg {
    fill: #FFD700;
    stroke: #B59410;
    stroke-width: 1;
    filter: drop-shadow(0 1px 1px rgba(0,0,0,0.4));
}
.favorite-indicator-overlay { /* List view */
    bottom: -4px;
    right: -6px;
}
.favorite-indicator-overlay svg {
    width: 14px;
    height: 14px;
}
.favorite-indicator-grid { /* Grid view */
    bottom: -2px;
    right: -2px;
}
.favorite-indicator-grid svg {
    width: 18px;
    height: 18px;
}
.favorite-indicator-icon-view { /* Icons view */
    bottom: 2px;
    right: 2px;
}
.favorite-indicator-icon-view svg {
    width: 20px;
    height: 20px;
}

/* Drag & Drop Styles */
[draggable="true"] {
    -webkit-user-drag: element;
}
.grid-item.dragging, tr.dragging {
    opacity: 0.5;
    background: var(--selection-bg);
}
.grid-item.drag-over, tr.drag-over, li.drag-over > .tree-item-self, .workspace-item.drag-over > a, .dashboard-drop-zone.drag-over, .dashboard-group-content.drag-over {
    background-color: var(--primary-bg-hover);
    outline: 2px dashed var(--primary-color);
    outline-offset: -2px;
}
.list-group .dashboard-group-content {
    min-height: 20px;
}
.list-group .details-view {
    border-top: none;
}
.list-group .details-view thead {
    display: none;
}
.list-group:first-of-type .details-view thead {
    display: table-header-group;
}


/* Dashboard Grouping */
.dashboard-group {
    margin-bottom: 16px;
}
.dashboard-group-header {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px;
    cursor: pointer;
    border-bottom: 1px solid var(--border-color);
}
.details-view .dashboard-group-header-tbody th {
    padding: 0;
    border-bottom: 1px solid var(--border-color);
}
.details-view .dashboard-group-header-tbody tr:hover {
    background-color: var(--hover-bg);
}
.details-view .dashboard-group-header {
    border-bottom: none;
}
.group-toggle-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 16px;
    height: 16px;
}
.group-toggle-icon svg {
    width: 100%;
    height: 100%;
    transition: transform 0.2s ease;
}
.group-title {
    font-weight: 600;
    color: var(--text-primary);
}
.group-count {
    font-size: 12px;
    background-color: var(--bg-color);
    color: var(--text-secondary);
    padding: 2px 8px;
    border-radius: 12px;
    border: 1px solid var(--border-color);
}


/* --- START: Notification Styles --- */
.notification-dropdown {
    position: relative;
}
#notification-bell-btn {
    position: relative;
}
.notification-badge {
    position: absolute;
    top: 2px;
    right: 2px;
    background-color: var(--danger-color);
    color: white;
    border-radius: 50%;
    width: 18px;
    height: 18px;
    font-size: 10px;
    font-weight: bold;
    display: flex;
    align-items: center;
    justify-content: center;
    line-height: 1;
    pointer-events: none;
}
.notification-panel {
    display: none;
    position: absolute;
    top: calc(100% + 12px);
    right: 0;
    width: 360px;
    background-color: var(--surface-color);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    box-shadow: 0 5px 15px var(--shadow-color);
    z-index: 110;
    opacity: 0;
    transform: translateY(-10px);
    transition: opacity 0.2s ease, transform 0.2s ease;
}
.notification-panel.show {
    display: block;
    opacity: 1;
    transform: translateY(0);
}
.notification-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 12px 16px;
    border-bottom: 1px solid var(--border-color);
}
.notification-header h3 {
    margin: 0;
    font-size: 16px;
}
#notification-list {
    max-height: 400px;
    overflow-y: auto;
}
.notification-item {
    display: flex;
    gap: 12px;
    padding: 12px 16px;
    border-bottom: 1px solid var(--border-color);
    text-decoration: none;
    transition: background-color 0.2s;
}
.notification-item:hover {
    background-color: var(--hover-bg);
}
.notification-item:last-child {
    border-bottom: none;
}
.notification-icon {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background-color: var(--primary-color);
    margin-top: 5px;
    flex-shrink: 0;
}
.notification-content p {
    margin: 0 0 4px 0;
    font-size: 14px;
    color: var(--text-primary);
    line-height: 1.4;
}
.notification-content time {
    font-size: 12px;
    color: var(--text-secondary);
}
.notification-empty-state {
    padding: 40px 20px;
    text-align: center;
    color: var(--text-secondary);
}
/* --- END: Notification Styles --- */


/* --- START: Bulk Action Styles --- */
.bulk-action-bar {
    display: flex;
    align-items: center;
    gap: 16px;
    background-color: var(--surface-color);
    padding: 4px 12px;
    border-radius: 6px;
    box-shadow: 0 2px 8px var(--shadow-color);
    border: 1px solid var(--border-color);
    flex-grow: 1;
}
.selection-count {
    font-size: 14px;
    font-weight: 600;
    color: var(--text-primary);
}
.bulk-actions-buttons {
    display: flex;
    gap: 8px;
    border-left: 1px solid var(--border-color);
    padding-left: 16px;
}
.bulk-actions-buttons .btn {
    height: 32px;
    padding: 0 12px;
}
#clear-selection-btn {
    margin-left: auto;
}

.item-selector-checkbox {
    width: 18px;
    height: 18px;
    cursor: pointer;
    accent-color: var(--primary-color);
    flex-shrink: 0;
}
.details-view th .item-selector-checkbox {
    margin-right: 8px;
}
.details-view .item-name-cell .item-selector-checkbox {
    margin-right: 4px;
}
.grid-item-header .item-selector-checkbox {
    margin-right: 4px;
}
.icon-item .item-selector-checkbox {
    position: absolute;
    top: 8px;
    left: 8px;
    z-index: 2;
}
/* --- END: Bulk Action Styles --- */

/* ==========================================================================
   Document View: Layout & Ribbon
   ========================================================================== */
#document-view { display: flex; flex-direction: column; height: 100%; }

#archived-banner { background-color: #fffbe6; color: #573a00; padding: 8px; text-align: center; font-weight: 500; border-bottom: 1px solid #ffe58f; display: flex; align-items: center; justify-content: center; flex-shrink: 0; }
#archived-banner svg { width: 18px; height: 18px; margin-right: 8px; }
body[data-theme="dark"] #archived-banner { background-color: #3d3d29; color: #ffe58f; border-bottom-color: #5c5c42; }

.main-controls { background-color: var(--surface-color); border-bottom: 1px solid var(--border-color); flex-shrink: 0; padding: 0 15px; }
.ribbon-header { display: grid; grid-template-columns: 1fr auto 1fr; align-items: center; padding: 6px 0; }
.title-container { display: flex; align-items: center; gap: 8px; min-width: 0; justify-self: start; }
.doc-home-link { display: inline-flex; align-items: center; justify-content: center; color: var(--text-secondary); }
.doc-home-link .icon { width: 20px; height: 20px; }
.doc-home-link:hover { color: var(--primary-color); }
.doc-title { font-size: 16px; font-weight: 400; color: var(--text-secondary); text-decoration: none; }
.sheet-title { font-size: 16px; font-weight: 600; color: var(--text-primary); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.title-separator { font-size: 16px; color: var(--text-tertiary); }

.header-logo-container { justify-self: center; height: 28px; }
.header-logo-container img { height: 100%; width: auto; object-fit: contain; }

.main-actions { display: flex; align-items: center; gap: 10px; justify-self: end; }
#share-btn.primary-action { background: none; border: none; padding: 0; }
#share-btn.primary-action svg { width: 20px; height: 20px; }
#ismartai-btn-doc { padding: 0; }
#ismartai-btn-doc svg { width: 20px; height: 20px; }
#ismartai-btn-dash svg { width: 20px; height: 20px; }

/* Ribbon Toolbar */
.ribbon-body { display: flex; align-items: center; padding: 6px 0; border-top: 1px solid var(--border-color); }
.ribbon-body .ribbon-group { display: flex; align-items: center; gap: 4px; }
.ribbon-body .icon-btn { padding: 4px; width: 28px; height: 28px; }
.ribbon-body .icon-btn svg { width: 18px; height: 18px; }
.ribbon-body .icon-btn.active { background-color: var(--grid-selection-color); }
.ribbon-body .icon-btn:disabled { opacity: 0.3; cursor: default; background: transparent !important; }
.ribbon-body .doc-view-controls .btn span { display: none; } /* Hide text on small buttons */
.ribbon-body .doc-view-controls .btn { padding: 6px; min-width: 28px; height: 28px; }
.ribbon-body .doc-view-controls .btn svg { margin: 0; }
.view-switcher-group { display: flex; align-items: center; background-color: var(--hover-bg); border-radius: 6px; padding: 2px; }
.view-switcher-group .icon-btn { width: 32px; height: 28px; border-radius: 4px; }
.view-switcher-group .icon-btn:hover { background-color: var(--surface-color); }
.view-switcher-group .icon-btn.active { background-color: var(--surface-color); color: var(--primary-color); box-shadow: 0 1px 3px var(--shadow-color); }

.color-picker-wrapper { position: relative; }
.color-picker-wrapper input[type="color"] { position: absolute; top: 0; left: 0; width: 100%; height: 100%; opacity: 0; cursor: pointer; }

.ribbon-group-right { display: flex; align-items: center; gap: 8px; margin-left: auto; }
.doc-view-controls { display: flex; gap: 4px; }
.doc-view-controls .btn { height: 28px; }
.doc-view-controls .btn svg { width: 16px; height: 16px; margin-right: 4px; }
.font-size-menu { width: 120px; }

.ribbon-extension-area {
    margin-left: auto;
    padding-left: 8px;
    border-left: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    gap: 8px;
}
.ribbon-extension-area .icon-btn {
    width: 36px;
    height: 36px;
    padding: 4px;
}
.ribbon-extension-area .icon-btn img {
    width: 28px;
    height: 28px;
    object-fit: contain;
    border-radius: 3px;
    transition: transform 0.2s ease;
}

.ribbon-extension-area .icon-btn:hover img {
    transform: scale(1.1);
}


/* Formula Bar */
#formula-bar { display: flex; align-items: center; padding: 5px 15px; background-color: var(--surface-color); border-bottom: 1px solid var(--border-color); flex-shrink: 0; height: 36px; }
#active-cell-indicator { padding: 4px 8px; border: 1px solid var(--border-color); background: var(--bg-color); color: var(--text-secondary); margin-right: 0; border-right: none; min-width: 60px; text-align: center; }
.formula-fx { padding: 4px 8px; border: 1px solid var(--border-color); background: var(--bg-color); color: var(--text-tertiary); margin-right: 0; border-right: none; cursor: default; }
#formula-input { flex-grow: 1; padding: 4px 8px; border: 1px solid var(--border-color); border-radius: 0; background-color: var(--surface-color); color: var(--text-primary); height: 100%; font-family: monospace; }
#formula-input:focus { outline: 1px solid var(--primary-color); border-color: var(--primary-color); z-index: 1; }
#formula-input:disabled { background-color: var(--bg-color); cursor: not-allowed; }
.doc-view-search { display: none !important; }

/* ==========================================================================
   Grid System
   ========================================================================== */
#print-area { flex-grow: 1; display: flex; flex-direction: column; overflow: hidden; position: relative; }
#grid-container { flex-grow: 1; overflow: auto; position: relative; user-select: none; background-color: var(--bg-color); }
#grid { border-collapse: collapse; border-spacing: 0; table-layout: fixed; position: relative; }

/* Grid Header */
#grid thead th { position: sticky; top: 0; z-index: 10; background-color: var(--grid-header-bg); border-right: 1px solid var(--grid-cell-border); border-bottom: 2px solid var(--grid-cell-border); padding: 0; min-height: 40px; height: 40px; transition: background-color 0.2s, color 0.2s; }
#grid thead th:hover { background-color: var(--grid-header-highlight-bg); }
#grid thead th .col-header-content { display: flex; flex-direction: column; justify-content: center; height: 100%; user-select: none; padding: 4px 8px; position: relative; }
#grid thead th .col-title { flex-grow: 1; text-align: left; font-size: 14px; font-weight: 500; padding: 0; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; cursor: pointer; color: var(--text-primary); display: flex; align-items: center; gap: 6px; }
.col-type-icon { color: var(--text-secondary); display: inline-flex; align-items: center; }
.col-type-icon svg { width: 14px; height: 14px; }
.col-letter { position: absolute; bottom: 2px; right: 4px; font-size: 10px; font-weight: 600; color: #BCC1C9; }
.lock-indicator-header { position: absolute; top: 4px; right: 4px; color: var(--grid-lock-color); }
.lock-indicator-header svg { width: 12px; height: 12px; }
.col-sort-indicator { margin-left: auto; font-size: 10px; }

/* Grid Header States */
#grid thead th.active-header { background-color: var(--grid-header-active-bg); }
#grid thead th.active-header .col-title-text, #grid thead th.active-header .col-type-icon, #grid thead th.active-header .col-sort-indicator, #grid thead th.active-header .col-letter { color: var(--grid-header-active-text); }
#grid thead th.active-header .lock-indicator-header { color: var(--lock-active-color); }
#grid thead th.locked { background-color: var(--bg-color); }

/* Grid Body & Cells */
#grid tbody td { min-height: 32px; padding: 4px 8px; border-right: 1px solid var(--grid-cell-border); border-bottom: 1px solid var(--grid-cell-border); overflow: hidden; white-space: nowrap; text-overflow: ellipsis; background-color: var(--surface-color); position: relative; font-size: var(--grid-font-size, 13px); vertical-align: middle; }
#grid tbody td.cell-wrap { white-space: normal; word-break: break-word; }
#grid thead th .col-title.cell-wrap { white-space: normal; word-break: break-word; }
#grid tbody tr.highlighted-row > td { background-color: var(--grid-highlight-row); }
#grid tbody tr.locked > td, #grid tbody td.locked { background-color: var(--bg-color); }
#grid th.crosshair-col, #grid td.crosshair-col { background-color: var(--grid-crosshair-bg); }
#grid tr.crosshair-row > td { background-color: var(--grid-crosshair-bg); }
#grid tr.highlighted-row > td.crosshair-col { background-color: var(--grid-highlight-row); }
#grid tbody tr:last-child td { border-bottom: none; }
#grid tbody tr.more-rows-indicator td { border-bottom: 1px dashed var(--border-color); text-align: center; color: var(--text-secondary); font-style: italic; font-size: 12px; background: var(--bg-color) !important; }


/* Row/Column Number Headers */
#grid thead th:first-child, #grid tbody td:first-child { width: 60px; min-width: 60px; max-width: 60px; position: sticky; left: 0; z-index: 22; text-align: center; font-weight: 500; padding: 0 8px; }
#grid thead th:first-child { background-color: var(--grid-header-bg); border-bottom-width: 2px; }
#grid tbody td:first-child { border-right: 1px solid var(--grid-cell-border); background-color: var(--grid-header-bg); border-bottom: 1px solid var(--grid-cell-border); }
#grid tbody td.active-header { background-color: var(--grid-header-highlight-bg); }
.select-all-btn { width: 0; height: 0; border-left: 8px solid transparent; border-right: 8px solid transparent; border-top: 8px solid var(--text-secondary); margin: auto; }

/* Indicator Column */
#grid thead th:nth-child(2), #grid tbody td:nth-child(2) { width: 40px; min-width: 40px; max-width: 40px; position: sticky; z-index: 21; padding: 0; border-right: 1px solid var(--grid-cell-border); text-align: center; background-color: var(--grid-header-bg); }
#grid tbody td:nth-child(2) { background-color: var(--surface-color); }
.indicator-wrapper { display: flex; align-items: center; justify-content: center; gap: 2px; height: 100%; }
.row-indicator-icon { width: 15px; height: 15px; color: var(--grid-indicator-color); cursor: pointer; }
.row-indicator-icon svg { width: 100%; height: 100%; stroke-width: 2; }

/* Lock Indicators */
.lock-in-row-num { color: var(--grid-lock-color); margin-left: 5px; vertical-align: middle; display: inline-flex; }
.lock-in-row-num svg { width: 14px; height: 14px; }
.lock-in-cell { position: absolute; top: 2px; right: 2px; color: var(--grid-lock-color); opacity: 0.6; }
.lock-in-cell svg { width: 12px; height: 12px; }

/* Column Resizing */
.column-resizer { position: absolute; right: 0; top: 0; height: 100%; width: 5px; cursor: col-resize; z-index: 20; }

/* Add Row/Column Buttons */
.add-col-header, .add-row-btn {
    width: 30px; min-width: 30px; height: 30px; padding: 0; border-radius: 4px;
    border: 1px solid transparent !important; color: white !important;
    cursor: pointer; background: var(--primary-color) !important; transition: all 0.2s ease;
    display: flex; align-items: center; justify-content: center;
    box-shadow: 0 0 0 0 rgba(33, 115, 70, 0.7);
    animation: pulse 2s infinite;
}
.add-col-header:hover, .add-row-btn:hover {
    background-color: var(--primary-hover) !important;
    border-color: var(--primary-hover) !important; animation: none;
}
.add-col-header { font-size: 24px; font-weight: 300; line-height: 1; }
@keyframes pulse {
    0% { box-shadow: 0 0 0 0 rgba(33, 115, 70, 0.4); }
    70% { box-shadow: 0 0 0 10px rgba(33, 115, 70, 0); }
    100% { box-shadow: 0 0 0 0 rgba(33, 115, 70, 0); }
}

.add-col-header { vertical-align: middle; }
#add-row-container { position: absolute; bottom: 45px; left: 15px; z-index: 30; }


/* Cell Specific Types & States */
.picture-in-cell { position: relative; width: 100%; height: 100%; display: flex; align-items: center; justify-content: center; cursor: pointer; }
.picture-in-cell img { max-width: 100%; max-height: 100%; object-fit: contain; }
.picture-placeholder { width: 100%; height: 100%; display: flex; align-items: center; justify-content: center; cursor: pointer; }
.picture-placeholder-icon { display: none; color: var(--text-tertiary); }
td[data-col-type="picture"]:hover .picture-placeholder-icon { display: block; }

.cell-action-icon, .cell-dropdown-arrow, .cell-formula-indicator { position: absolute; right: 4px; top: 50%; transform: translateY(-50%); color: var(--text-tertiary); opacity: 0; transition: opacity 0.2s; pointer-events: none; }
.cell-formula-indicator { font-weight: bold; font-family: monospace; }
td:hover > .cell-action-icon, td:hover > .cell-dropdown-arrow, td:hover > .cell-formula-indicator { opacity: 1; }
.cell-action-icon svg { width: 16px; height: 16px; }
.cell-dropdown-arrow { width: 0; height: 0; border-left: 5px solid transparent; border-right: 5px solid transparent; border-top: 5px solid var(--text-tertiary); }

td.size-small { height: 32px !important; }
td.size-medium { height: 80px !important; }
td.size-large { height: 150px !important; }

#grid tbody td[data-col-type="checkbox"] { text-align: center; }
#grid tbody td input[type="checkbox"][disabled] { pointer-events: none; -webkit-appearance: none; -moz-appearance: none; appearance: none; width: 16px; height: 16px; border: 1px solid var(--border-color); border-radius: 3px; cursor: default; position: relative; background-color: transparent; vertical-align: middle; margin: 0; }
#grid tbody td input[type="checkbox"][disabled]:checked::before { content: '✓'; display: block; font-size: 14px; color: var(--primary-color); position: absolute; top: 50%; left: 50%; transform: translate(-50%, -50%); font-weight: bold; }

/* Grid Overlays & Editors */
#grid tbody td .cell-editor { position: absolute; top: -1px; left: -1px; width: calc(100% + 2px); height: calc(100% + 2px); border: var(--grid-active-cell-border); padding: 0 7px; font-size: var(--grid-font-size, 13px); background-color: var(--grid-editor-bg); color: var(--text-primary); box-sizing: border-box; z-index: 50; font-weight: inherit; outline: none; }
#grid tbody td .cell-editor.date-editor { min-width: 160px; }
#grid tbody td .cell-editor[type="checkbox"] { width: 16px; height: 16px; top: 50%; left: 50%; transform: translate(-50%, -50%); border: 1px solid var(--border-color); padding: 0; }

/* Sticky & Frozen Styles */
.frozen-col { position: sticky !important; z-index: 11; }
#grid thead th.frozen-col { z-index: 12; }
#grid thead th:nth-child(2), #grid tbody td:nth-child(2) { z-index: 13; }
#grid thead th:first-child, #grid tbody td:first-child { z-index: 14; }
.last-frozen-col { border-right: var(--grid-frozen-border) !important; }
.frozen-row { position: sticky; z-index: 10; border-bottom: var(--grid-frozen-border) !important; }
.frozen-row td { border-bottom: 1px solid var(--grid-cell-border) !important; }
.frozen-row .frozen-col { z-index: 15 !important; }
#grid thead th:first-child.frozen-col { z-index: 30 !important; }

/* Virtual Scroll Padding */
#grid tr.virtual-padding-top td, #grid tr.virtual-padding-bottom td { border: none; background-color: transparent; padding: 0; }

/* Sheet Tabs */
.sheet-tabs-container { display: flex; align-items: center; background-color: var(--bg-color); border-top: 1px solid var(--border-color); padding: 0 4px; flex-shrink: 0; z-index: 5; }
#sheet-tabs-wrapper { flex-grow: 1; overflow: hidden; }
#sheet-tabs { display: flex; align-items: center; scroll-behavior: smooth; }
#sheet-tabs::-webkit-scrollbar { display: none; }
.sheet-scroll-controls { display: flex; }
.sheet-scroll-btn { flex-shrink: 0; width: 24px; height: 24px; border-radius: 4px; background-color: transparent; border: none; color: var(--text-secondary); cursor: pointer; font-size: 18px; line-height: 1; }
.sheet-scroll-btn:hover { background-color: var(--hover-bg); }
.tab { padding: 8px 15px; cursor: pointer; border: 1px solid var(--border-color); border-bottom: none; border-top-left-radius: 6px; border-top-right-radius: 6px; color: var(--text-secondary); margin-right: 2px; position: relative; transition: all 0.2s ease-in-out; white-space: nowrap; background-color: transparent; margin-top: 4px; }
.tab:hover { color: var(--primary-color); background-color: var(--surface-color); }
.tab.active { color: var(--primary-color); font-weight: 600; background-color: var(--surface-color); border-top: 2px solid var(--primary-color); margin-top: 2px; }
.tab[style*="--tab-color"].active { border-top-color: var(--tab-color); color: var(--tab-color); }
#sheet-tabs #add-sheet-btn { align-self: center; margin-left: 4px; width: 28px; height: 28px; border-radius: 6px; background: transparent !important; color: var(--text-secondary) !important; animation: none; box-shadow: none; border: 1px dashed var(--border-color) !important; }
#sheet-tabs #add-sheet-btn:hover { background: var(--hover-bg) !important; color: var(--primary-color) !important; border-style: solid !important; }
#sheet-tabs #add-sheet-btn svg { stroke-width: 2.5; }


/* ==========================================================================
   Modals & Overlays
   ========================================================================== */
.modal-overlay { 
    position: fixed; top: 0; left: 0; width: 100%; height: 100%; 
    background-color: var(--modal-bg); display: none;
    justify-content: center; align-items: center; z-index: 1000;
    opacity: 0; transition: opacity 0.2s ease-in-out;
}
.modal-overlay.show { display: flex; opacity: 1; }
.modal { 
    background-color: var(--surface-color); border-radius: 8px; 
    box-shadow: 0 5px 15px var(--shadow-color); width: 90%; 
    display: flex; flex-direction: column; max-height: 90vh;
    transform: scale(0.95); transition: transform 0.2s ease-in-out;
}
.modal-overlay.show .modal { transform: scale(1); }
.modal.modal-sm { max-width: 400px; }
.modal.modal-md { max-width: 550px; }
.modal.modal-lg { max-width: 800px; }

.modal-header { 
    display: flex; justify-content: space-between; align-items: center; 
    padding: 16px 24px; border-bottom: 1px solid var(--border-color); flex-shrink: 0;
}
.modal-header h3 { font-size: 18px; font-weight: 600; color: var(--text-primary); }
.modal-header .close-btn { color: var(--text-tertiary); }
.modal-header .close-btn:hover { color: var(--text-primary); background-color: var(--hover-bg); }

.modal-body { padding: 24px; overflow-y: auto; flex-grow: 1; }
.modal-footer { 
    display: flex; justify-content: flex-end; align-items: center; 
    padding: 16px 24px; border-top: 1px solid var(--border-color); 
    gap: 12px; background-color: var(--bg-color);
    border-bottom-left-radius: 8px; border-bottom-right-radius: 8px; flex-shrink: 0;
}
body[data-theme="dark"] .modal-footer { background-color: var(--dark-bg); }

.modal > form {
    display: flex;
    flex-direction: column;
    flex-grow: 1;
    min-height: 0;
}

#context-menu { 
    position: fixed; 
    background-color: var(--surface-color); 
    border: 1px solid var(--border-color); 
    border-radius: 6px; 
    box-shadow: 0 2px 10px var(--shadow-color); 
    z-index: 2000; 
    display: none; 
    padding: 4px; 
    min-width: 200px; 
    overflow-y: auto; 
    max-height: 95vh;
}
#context-menu::-webkit-scrollbar { width: 14px; }
#context-menu::-webkit-scrollbar-track { background: transparent; }
#context-menu::-webkit-scrollbar-thumb { background-color: var(--border-color); border-radius: 20px; border: 4px solid var(--surface-color); }
#context-menu::-webkit-scrollbar-thumb:hover { background-color: var(--text-tertiary); }
#context-menu ul { list-style: none; }
#context-menu li { display: flex; align-items: center; padding: 6px 12px; cursor: pointer; font-size: 13px; white-space: nowrap; transition: background-color 0.1s; border-radius: 4px; }
#context-menu li:hover { background-color: var(--hover-bg); }
#context-menu li svg { width: 16px; height: 16px; margin-right: 8px; color: var(--text-secondary); }
#context-menu li.danger { color: var(--danger-color); }
#context-menu li.danger:hover { background-color: #fef2f2; }
body[data-theme="dark"] #context-menu li.danger:hover { background-color: #3f2222; }
#context-menu li.danger svg { color: var(--danger-color); }
#context-menu li.disabled { opacity: 0.5; cursor: default; color: var(--text-tertiary); }
#context-menu li.disabled:hover { background-color: transparent; }
#context-menu li.separator { height: 1px; background-color: var(--border-color); margin: 4px 0; padding: 0; cursor: default; }
#context-menu li.separator:hover { background-color: transparent; }
.menu-item-checkbox { gap: 10px; padding: 8px 15px; }
.menu-item-checkbox label { flex-grow: 1; cursor: pointer; }

/* New Project Modal Specifics */
.project-type-selector {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
    margin-top: 8px;
}
.project-type-option input[type="radio"] {
    display: none;
}
.project-type-card {
    padding: 16px;
    border: 2px solid var(--border-color);
    border-radius: 8px;
    cursor: pointer;
    text-align: center;
    transition: all 0.2s ease;
    height: 100%;
}
.project-type-card:hover {
    border-color: var(--primary-color);
    background-color: var(--primary-bg);
}
.project-type-option input[type="radio"]:checked + .project-type-card {
    border-color: var(--primary-color);
    background-color: var(--primary-bg);
    box-shadow: 0 0 0 2px var(--primary-color);
}
.project-type-card .icon {
    width: 32px;
    height: 32px;
    margin: 0 auto 12px;
    color: var(--primary-color);
}
.project-type-card strong {
    display: block;
    font-size: 14px;
    margin-bottom: 4px;
    color: var(--text-primary);
}
.project-type-card small {
    font-size: 12px;
    color: var(--text-secondary);
}

#active-cell-selection { position: absolute; pointer-events: none; border: var(--grid-active-cell-border); z-index: 40; display: none; transition: all 0.05s ease-out; }
#copied-cell-outline { position: absolute; pointer-events: none; border: 2px dashed var(--primary-color); opacity: 0.7; z-index: 40; display: none; animation: marching-ants 1s infinite linear; }
@keyframes marching-ants { to { border-right-color: transparent; } }

#column-resize-guide { position: absolute; top: 0; width: 1px; background-color: var(--primary-color); z-index: 50; display: none; pointer-events: none; }

#toast-container { position: fixed; bottom: 20px; right: 20px; z-index: 5000; pointer-events: none; }
.toast { opacity: 0; transform: translateY(20px); transition: opacity 0.4s ease, transform 0.4s ease; padding: 12px 20px; margin-bottom: 10px; border-radius: 6px; box-shadow: 0 3px 10px var(--shadow-color); color: white; font-weight: 500; }
.toast.show { opacity: 1; transform: translateY(0); }
.toast-info { background-color: var(--primary-color); }
.toast-success { background-color: #059669; }
.toast-error { background-color: #DC2626; }
.toast-warning { background-color: #F59E0B; }

/* Authentication & Form Pages */
.auth-container { display: flex; flex-direction: column; justify-content: center; align-items: center; min-height: 100vh; padding: 20px; background-color: var(--bg-color); }
.auth-box { background: var(--surface-color); padding: 30px; border-radius: 8px; box-shadow: 0 4px 20px var(--shadow-color); width: 100%; max-width: 400px; text-align: center; }
.auth-box input { background-color: var(--bg-color); color: var(--text-primary); }
.form-message { width: 100%; padding: 12px; border-radius: 6px; margin-bottom: 20px; font-weight: 500; }
.form-message.success { background-color: var(--primary-bg); color: var(--primary-color); }
.form-message.error { background-color: #fef2f2; color: var(--danger-color); }
body[data-theme="dark"] .form-message.error { background-color: #3f2222; }

/* Form Styles (Generic) */
.form-group { display: flex; flex-direction: column; margin-bottom: 16px; }
.form-group label { margin-bottom: 6px; font-weight: 500; color: var(--text-secondary); text-align: left; }
.form-group input, .form-group select, .form-group textarea { width: 100%; padding: 10px; border-radius: 6px; border: 1px solid var(--border-color); background-color: var(--surface-color); color: var(--text-primary); font-size: 14px; }
body[data-theme="dark"] .form-group input, body[data-theme="dark"] .form-group select, body[data-theme="dark"] .form-group textarea { background-color: var(--bg-color); }
.form-group input:focus, .form-group select:focus, .form-group textarea:focus { outline: none; border-color: var(--primary-color); box-shadow: 0 0 0 2px var(--primary-bg); }
.form-text { font-size: 12px; color: var(--text-tertiary); text-align: left; margin-top: 4px; }
.checkbox-container { display: flex; align-items: center; gap: 8px; }
.checkbox-label-form { font-weight: normal; color: var(--text-primary); }

/* Modal Specifics */
.template-select-wrapper { display: flex; align-items: center; gap: 8px; }
.template-select-wrapper select { flex-grow: 1; }
#user-search-results { list-style: none; border: 1px solid var(--border-color); border-radius: 6px; max-height: 150px; overflow-y: auto; margin-top: 4px; }
#user-search-results li { padding: 8px 12px; cursor: pointer; }
#user-search-results li:hover { background-color: var(--hover-bg); }
#permission-list { margin-top: 20px; }
.permission-item { display: flex; justify-content: space-between; align-items: center; padding: 10px 0; border-bottom: 1px solid var(--border-color); }
.permission-item:last-child { border-bottom: none; }
.permission-controls { display: flex; align-items: center; gap: 8px; }
#generic-confirm-message strong { color: var(--text-primary); font-weight: 600; }
.confirm-text-instruction { font-size: 13px; color: var(--text-secondary); margin-top: 16px; margin-bottom: 8px; text-align: left; }
.share-controls { display: flex; gap: 8px; align-items: stretch; position: relative; }
.pill-input-container { flex-grow: 1; display: flex; flex-wrap: wrap; align-items: center; gap: 6px; padding: 5px 8px; border: 1px solid var(--border-color); border-radius: 6px; background-color: var(--bg-color); cursor: text; }
.user-pill { display: inline-flex; align-items: center; background-color: var(--primary-bg); color: var(--primary-color); border-radius: 12px; padding: 2px 8px; font-size: 13px; font-weight: 500; }
body[data-theme="dark"] .user-pill { color: var(--text-primary); }
.remove-pill { background: none; border: none; font-size: 16px; margin-left: 4px; cursor: pointer; color: var(--primary-color); opacity: 0.7; }
.remove-pill:hover { opacity: 1; }
#share-user-search { flex-grow: 1; border: none; background: none; outline: none; padding: 4px 0; min-width: 120px; }
#share-permissions { height: auto; }
#add-share-btn { height: auto; padding: 10px 20px; }


/* Column Editor Modal */
#column-editor-overlay fieldset { border: 1px solid var(--border-color); border-radius: 6px; padding: 12px; margin-bottom: 16px; }
#column-editor-overlay legend { font-size: 12px; font-weight: 600; color: var(--text-secondary); padding: 0 4px; margin-left: 8px; }
#column-editor-overlay .form-group { margin-bottom: 12px; }
#column-editor-overlay .form-group input, #column-editor-overlay .form-group select, #column-editor-overlay .form-group textarea { padding: 8px; }
.form-group-inline { display: flex; flex-wrap: wrap; gap: 16px; align-items: center; }
.form-group-inline label { display: flex; align-items: center; gap: 6px; margin-bottom: 0; font-weight: normal; color: var(--text-primary); }

/* Filter Modal */
#filter-modal-overlay .filter-row { display: flex; align-items: center; gap: 8px; margin-bottom: 12px; }
#filter-modal-overlay select, #filter-modal-overlay input { padding: 8px; border-radius: 4px; border: 1px solid var(--border-color); background-color: var(--bg-color); color: var(--text-primary); font-size: 14px; }
#filter-modal-overlay .filter-column { flex: 2; }
#filter-modal-overlay .filter-operator { flex: 2; }
#filter-modal-overlay .filter-value { flex: 3; }
#filter-modal-overlay .remove-filter-btn { width: 28px; height: 28px; flex-shrink: 0; }

/* Picture Gallery Modal */
#picture-gallery-modal-overlay { background-color: rgba(0, 0, 0, 0.85); }
.modal.picture-gallery { width: 95vw; height: 95vh; max-width: none; background: transparent; box-shadow: none; border: none; padding: 0; }
.modal.picture-gallery .modal-header, .modal.picture-gallery .modal-footer { position: absolute; left: 0; width: 100%; color: #fff; border: none; padding: 20px 30px; z-index: 10; pointer-events: none; }
.modal.picture-gallery .modal-header { top: 0; background: linear-gradient(to bottom, rgba(0,0,0,0.5), transparent); }
.modal.picture-gallery .modal-footer { bottom: 0; background: linear-gradient(to top, rgba(0,0,0,0.5), transparent); justify-content: space-between; }
.modal.picture-gallery .close-btn, .modal.picture-gallery .icon-btn { color: #fff; pointer-events: all; }
.modal.picture-gallery .modal-body { padding: 0; flex-grow: 1; display: flex; align-items: center; justify-content: center; overflow: hidden; }
.modal.picture-gallery .gallery-image-container { width: 100%; height: 100%; display: flex; align-items: center; justify-content: center; }
.modal.picture-gallery #gallery-image { max-width: 100%; max-height: 100%; object-fit: contain; border-radius: 4px; box-shadow: 0 10px 30px rgba(0,0,0,0.5); }
.gallery-controls-center { position: absolute; left: 50%; transform: translateX(-50%); display: flex; gap: 20px; }
.gallery-empty-state { color: #fff; text-align: center; pointer-events: all; }

/* Grouping and Sorting Indicators */
#status-indicators { margin-left: auto; display: flex; align-items: center; gap: 16px; }
#sort-indicator-display, #filter-indicator-display {
    padding: 4px 10px;
    background-color: var(--primary-bg);
    color: var(--primary-color);
    border-radius: 12px;
    font-size: 12px;
    display: flex;
    align-items: center;
    gap: 6px;
}
body[data-theme="dark"] #sort-indicator-display,
body[data-theme="dark"] #filter-indicator-display {
    background-color: var(--dark-primary-bg);
    color: var(--dark-text-primary);
}
#sort-indicator-display svg, #filter-indicator-display svg { width: 14px; height: 14px; }


.group-header-row td { background-color: var(--grid-header-bg) !important; font-weight: 600; position: sticky; top: 40px; z-index: 9; }
.group-header-content { display: flex; align-items: center; gap: 8px; padding: 4px 8px; }
.group-toggle-btn { width: 20px !important; height: 20px !important; }
.group-toggle-btn svg { width: 16px; height: 16px; }
.group-count { background-color: var(--border-color); color: var(--text-secondary); padding: 0px 6px; border-radius: 10px; font-size: 11px; }
.group-summary { margin-left: auto; font-size: 12px; color: var(--text-secondary); }

/* About & Info Modals */
.about-logo { max-width: 80px; margin-bottom: 16px; }
.doc-info-list { display: grid; grid-template-columns: 100px 1fr; gap: 8px 16px; }
.doc-info-list dt { font-weight: 600; color: var(--text-secondary); }
.doc-info-list dd { color: var(--text-primary); }
#doc-info-body .breadcrumb-separator { margin: 0 2px; }

/* CSV Import Modal */
#import-csv-options { margin-bottom: 16px; padding-bottom: 16px; border-bottom: 1px solid var(--border-color); }
.import-filename { font-weight: 600; margin-bottom: 12px; }
.import-section-header { font-size: 14px; font-weight: 600; margin-top: 20px; margin-bottom: 10px; }
#import-csv-preview-container, #import-csv-mapping-container { max-height: 25vh; overflow: auto; border: 1px solid var(--border-color); border-radius: 4px; }
.csv-preview-table { width: 100%; border-collapse: collapse; }
.csv-preview-table th, .csv-preview-table td { padding: 8px; border: 1px solid var(--border-color); text-align: left; font-size: 12px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; max-width: 200px; }
.csv-preview-table thead { position: sticky; top: 0; z-index: 1; }
.csv-preview-table th { background-color: var(--bg-color); font-weight: 600; }
.csv-preview-table td input[type="text"], .csv-preview-table td select { width: 100%; padding: 4px; font-size: 12px; border-radius: 4px; background-color: var(--surface-color); color: var(--text-primary); border: 1px solid var(--border-color); }
.csv-preview-table td input:focus, .csv-preview-table td select:focus { outline: 1px solid var(--primary-color); }
.csv-preview-table td input:disabled, .csv-preview-table td select:disabled { background-color: var(--bg-color); color: var(--text-tertiary); cursor: not-allowed; border-color: transparent; }
.csv-preview-table tbody td { background-color: var(--surface-color); }
#import-csv-mapping-container .csv-preview-table th:first-child { width: 60px; text-align: center; }
#import-csv-mapping-container .csv-preview-table th:first-child label { display: flex; align-items: center; justify-content: center; gap: 8px; cursor: pointer; }
#import-csv-mapping-container .csv-preview-table td:first-child { text-align: center; }
.csv-preview-table .disabled-row td { color: var(--text-tertiary); }
body[data-theme="dark"] .csv-preview-table .disabled-row td { color: var(--text-tertiary); }

.pagination-bar {
    display: grid;
    grid-template-columns: 1fr auto 1fr;
    align-items: center;
    padding: 4px 16px;
    background-color: var(--bg-color);
    flex-shrink: 0;
}
.pagination-bar.bottom {
    border-top: 1px solid var(--border-color);
}
.total-rows-indicator {
    grid-column: 1;
    justify-self: start;
    font-size: 12px;
    color: var(--text-secondary);
}
.pagination-controls {
    grid-column: 2;
    display: flex;
    align-items: center;
    gap: 8px;
}
.pagination-controls .icon-btn {
    width: 36px;
    height: 36px;
    font-size: 20px;
}
#page-info { font-size: 14px; color: var(--text-secondary); margin: 0 8px; font-weight: 500;}
.pagination-rows-selector {
    grid-column: 3;
    justify-self: end;
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 12px;
    color: var(--text-secondary);
}
#rows-per-page { 
    font-size: 11px; 
    padding: 4px; 
    border-radius: 4px; 
    border: 1px solid var(--border-color); 
    background-color: var(--surface-color);
    color: var(--text-primary);
}

/* Print Options Modal */
.print-options-layout {
    display: flex;
    flex-direction: column;
    gap: 24px;
}
.print-option-group {
    display: flex;
    flex-direction: column;
    gap: 12px;
}
.print-option-group legend {
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 8px;
    font-size: 14px;
}
.print-option-group label {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 12px;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    cursor: pointer;
}
.print-option-group label:has(input:checked) {
    background-color: var(--primary-bg);
    border-color: var(--primary-color);
}

/* --- START: AI Formula Generation Styles --- */
#ai-formula-btn {
    width: 24px;
    height: 24px;
    padding: 0;
    border-radius: 4px;
    margin-left: 4px;
    font-size: 16px;
    border: 1px solid transparent;
}
#ai-formula-btn:hover {
    background-color: var(--primary-bg);
    border-color: var(--primary-color);
}
#ai-formula-popup {
    position: absolute;
    top: calc(100% + 5px);
    left: 100px; /* Aligns roughly with the formula bar start */
    z-index: 100;
    background-color: var(--surface-color);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    box-shadow: 0 4px 12px var(--shadow-color);
    padding: 8px;
    display: flex;
    gap: 8px;
    align-items: center;
}
#ai-formula-prompt {
    width: 300px;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    padding: 6px 10px;
    font-size: 13px;
    background-color: var(--bg-color);
    color: var(--text-primary);
}
#ai-formula-prompt:focus {
    outline: none;
    border-color: var(--primary-color);
}
#ai-formula-submit {
    padding: 6px 12px;
    font-size: 13px;
}
/* --- END: AI Formula Generation Styles --- */


@media print {
    @page {
        size: A4 landscape;
        margin: 1cm;
    }
    body, #app, #document-view, #print-area {
        height: auto;
        overflow: visible;
        background: #fff !important;
        color: #000 !important;
    }
    .main-controls, #formula-bar, .sheet-tabs-container, .pagination-bar, #add-row-container, .modal-overlay, #context-menu, #sort-indicator-display, #archived-banner {
        display: none !important;
    }
    #print-header {
        display: block !important;
        text-align: center;
        margin-bottom: 20px;
        position: static;
    }
    #print-header h1, #print-header h2 { color: #000; }
    #grid-container {
        overflow: visible !important;
        height: auto !important;
    }
    #grid, #grid tbody, #grid tr, #grid td, #grid th {
        page-break-inside: avoid;
    }
    #grid {
        width: 100% !important;
        border: 1px solid #ccc;
    }
    #grid th, #grid td {
        background-color: #fff !important;
        color: #000 !important;
        border: 1px solid #ccc !important;
        white-space: normal !important; /* Allow content to wrap */
        -webkit-print-color-adjust: exact;
        print-color-adjust: exact;
        position: static !important;
    }
     #grid thead th:first-child, #grid tbody td:first-child,
    #grid thead th:nth-child(2), #grid tbody td:nth-child(2) {
        display: none !important;
    }

    .row-indicator-icon, .cell-action-icon, .cell-dropdown-arrow, .cell-formula-indicator,
    .lock-indicator-header, .lock-in-cell, .lock-in-row-num, .select-all-btn,
    .column-resizer, .add-col-header, #add-row-container, .col-letter, .col-sort-indicator, .col-type-icon {
        display: none !important;
    }
}


@media (max-width: 768px) {
    .explorer-body:not(.sidebar-collapsed) .navigation-pane {
        position: fixed;
        z-index: 1000;
        background-color: var(--surface-color);
        height: 100%;
        box-shadow: 0 0 20px rgba(0,0,0,0.2);
    }
}

/* ==========================================================================
   Admin Panel
   ========================================================================== */
#admin-panel {
    display: flex;
    flex-direction: column;
    height: 100%;
    background-color: var(--bg-color);
}
.admin-header {
    background-color: var(--surface-color);
    padding: 16px 24px;
    border-bottom: 1px solid var(--border-color);
    flex-shrink: 0;
}
.admin-header h1 {
    font-size: 24px;
    margin-bottom: 16px;
}
#admin-nav {
    display: flex;
    gap: 8px;
    border-bottom: 2px solid var(--border-color);
}
.admin-nav-link {
    padding: 10px 16px;
    text-decoration: none;
    color: var(--text-secondary);
    font-weight: 600;
    border-bottom: 2px solid transparent;
    margin-bottom: -2px;
}
.admin-nav-link:hover {
    color: var(--text-primary);
}
.admin-nav-link.active {
    color: var(--primary-color);
    border-bottom-color: var(--primary-color);
}
.admin-content {
    padding: 24px;
    overflow-y: auto;
    flex-grow: 1;
}
.admin-content h2 {
    margin-bottom: 16px;
    font-size: 20px;
}
.admin-table {
    width: 100%;
    border-collapse: collapse;
}
.admin-table th, .admin-table td {
    padding: 12px;
    border-bottom: 1px solid var(--border-color);
    text-align: left;
}
.admin-table thead {
    background-color: var(--bg-color);
}
.admin-table tbody tr:hover {
    background-color: var(--hover-bg);
}
.admin-actions {
    display: flex;
    gap: 8px;
}
.admin-actions .btn-sm {
    padding: 6px 10px;
    font-size: 12px;
}
.badge {
    padding: 3px 8px;
    border-radius: 12px;
    font-size: 11px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}
.badge.admin { background-color: #DBEAFE; color: #1E40AF; }
.badge.user { background-color: #F3F4F6; color: #4B5563; }
.badge.active { background-color: var(--primary-bg); color: var(--primary-color); }
.badge.inactive { background-color: #FEE2E2; color: #991B1B; }
.form-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 16px;
}
#settings-form .form-footer {
    padding: 16px 0 0 0;
    background-color: transparent;
    border-top: 1px solid var(--border-color);
    margin-top: 24px;
}
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 20px;
    margin-bottom: 32px;
}
.stat-card {
    background-color: var(--surface-color);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 20px;
    display: flex;
    flex-direction: column;
    text-decoration: none;
    color: var(--text-primary);
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}
.stat-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 16px var(--shadow-color);
}
.stat-card .stat-icon {
    width: 32px;
    height: 32px;
    margin-bottom: 12px;
    color: var(--primary-color);
}
.stat-card .stat-icon svg {
    width: 100%;
    height: 100%;
}
.stat-card h3 {
    font-size: 14px;
    color: var(--text-secondary);
    margin-bottom: 8px;
    font-weight: 500;
}
.stat-card p {
    font-size: 32px;
    font-weight: 600;
    line-height: 1;
}
.stat-card small {
    margin-top: auto;
    padding-top: 8px;
    color: var(--text-tertiary);
    font-size: 12px;
}
.admin-columns {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 24px;
    margin-top: 32px;
}
.admin-section {
    background-color: var(--surface-color);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 20px;
}
.activity-list, .system-info-list {
    list-style: none;
    padding: 0;
    margin: 0;
}
.activity-item {
    display: flex;
    gap: 12px;
    padding: 12px 0;
    border-bottom: 1px solid var(--border-color);
}
.activity-item:last-child {
    border-bottom: none;
}
.activity-icon {
    width: 36px;
    height: 36px;
    flex-shrink: 0;
    background-color: var(--primary-bg);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--primary-color);
}
.activity-icon svg { width: 20px; height: 20px; }
.activity-details p { margin: 0; font-size: 14px; }
.activity-details p strong { font-weight: 600; }
.activity-details p em { font-style: normal; color: var(--text-secondary); }
.activity-details time { font-size: 12px; color: var(--text-tertiary); }
.system-info-list li {
    display: flex;
    justify-content: space-between;
    padding: 8px 0;
    font-size: 14px;
}
.system-info-list li span { color: var(--text-secondary); }
.system-info-list li strong { font-weight: 600; }

@media (max-width: 992px) {
    .admin-columns {
        grid-template-columns: 1fr;
    }
}

/* ==========================================================================
   Workflow Builder (iSmartFlow)
   ========================================================================== */
.workflow-builder {
    max-width: 800px;
    margin: 0 auto;
    padding: 16px;
}

.workflow-step {
    background-color: var(--surface-color);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    margin-bottom: 24px;
    overflow: hidden;
    box-shadow: 0 1px 3px var(--shadow-color);
}

.step-header {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 16px;
    background-color: var(--bg-color);
    border-bottom: 1px solid var(--border-color);
    font-weight: 600;
}

.step-header span:first-child {
    width: 24px;
    height: 24px;
    border-radius: 50%;
    background-color: var(--primary-color);
    color: white;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 14px;
    flex-shrink: 0;
}

.step-body {
    padding: 20px 24px;
}

.workflow-builder .form-group {
    margin-bottom: 0;
}

#wf-trigger-config,
#wf-conditions-config,
#wf-actions-config {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

/* ==========================================================================
   Kanban View
   ========================================================================== */
#kanban-board-container {
    display: flex;
    gap: 16px;
    padding: 16px;
    overflow-x: auto;
    height: 100%;
}
.kanban-column {
    flex: 0 0 300px;
    width: 300px;
    background-color: var(--surface-color);
    border-radius: 8px;
    display: flex;
    flex-direction: column;
    max-height: 100%;
}
.kanban-column-header {
    padding: 12px;
    font-weight: 600;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: space-between;
}
.kanban-card-list {
    padding: 8px;
    overflow-y: auto;
    flex-grow: 1;
}
.kanban-card {
    background-color: var(--surface-color);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    padding: 12px;
    margin-bottom: 8px;
    box-shadow: 0 1px 3px var(--shadow-color);
    cursor: grab;
    transition: box-shadow 0.2s ease, background-color 0.2s ease;
}
.kanban-card:hover {
    border-color: var(--primary-color);
}
.kanban-card-title {
    font-weight: 500;
    margin-bottom: 8px;
}
.kanban-card-details {
    font-size: 12px;
    color: var(--text-secondary);
}
.kanban-card.is-dragging {
    opacity: 0.5;
}
.kanban-column.drag-over .kanban-card-list {
    background-color: var(--primary-bg);
}


/* ==========================================================================
   Gantt View
   ========================================================================== */
#gantt-chart-container {
    height: 100%;
    padding: 16px;
}
#gantt-chart-container .gantt .bar-wrapper {
    fill: var(--gantt-bar-bg);
}
#gantt-chart-container .gantt .bar-progress {
    fill: var(--gantt-bar-progress-bg);
}
#gantt-chart-container .grid-header,
#gantt-chart-container .grid-background {
    fill: var(--gantt-header-bg);
}
#gantt-chart-container .grid-row {
    fill: var(--surface-color);
}
#gantt-chart-container .grid-row:nth-child(even) {
    fill: var(--bg-color);
}
#gantt-chart-container .grid .tick {
    stroke: var(--gantt-grid-line-color);
}
#gantt-chart-container .today-highlight {
    fill: var(--gantt-today-highlight-color);
}
#gantt-chart-container .gantt-container .grid-header text,
#gantt-chart-container .gantt-container .grid-row .row-name text,
#gantt-chart-container .gantt-container .tick text {
    fill: var(--text-secondary);
}
#gantt-chart-container .gantt-container .bar-label {
    fill: #fff;
}
body[data-theme="dark"] #gantt-chart-container .gantt-container .bar-label {
    fill: var(--text-primary);
}

/* ==========================================================================
   iSmartAI Panel
   ========================================================================== */
.ai-panel {
    position: fixed;
    top: 0;
    right: 0;
    width: 380px;
    max-width: 90vw;
    height: 100vh;
    background-color: var(--surface-color);
    border-left: 1px solid var(--border-color);
    box-shadow: -5px 0 15px var(--shadow-color);
    z-index: 1010;
    display: flex;
    flex-direction: column;
    transform: translateX(100%);
    transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

body.ai-panel-open .ai-panel {
    transform: translateX(0);
}

.ai-panel-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 12px 16px;
    border-bottom: 1px solid var(--border-color);
    flex-shrink: 0;
}
.ai-panel-header h3 {
    margin: 0;
    font-size: 16px;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 8px;
}
.ai-panel-header h3 img {
    width: 24px;
    height: 24px;
}

.ai-panel-body {
    flex-grow: 1;
    overflow-y: auto;
    padding: 16px;
    display: flex;
    flex-direction: column;
}

.ai-chat-placeholder {
    margin: auto;
    text-align: center;
    color: var(--text-tertiary);
}
.ai-chat-placeholder svg {
    margin-bottom: 16px;
}
.ai-chat-placeholder p {
    font-size: 13px;
    line-height: 1.5;
}

.ai-message {
    max-width: 90%;
    padding: 10px 14px;
    border-radius: 12px;
    margin-bottom: 12px;
    line-height: 1.5;
}
.ai-message.user {
    align-self: flex-end;
    background-color: var(--primary-color);
    color: #fff;
    border-bottom-right-radius: 4px;
}
.ai-message.assistant {
    align-self: flex-start;
    background-color: var(--bg-color);
    border: 1px solid var(--border-color);
    border-bottom-left-radius: 4px;
}
.ai-message.thinking {
    align-self: flex-start;
    background-color: var(--bg-color);
    border: 1px solid var(--border-color);
    border-bottom-left-radius: 4px;
    color: var(--text-secondary);
    font-style: italic;
}
.ai-message.error {
    align-self: flex-start;
    background-color: #fef2f2;
    color: var(--danger-color);
    border: 1px solid var(--danger-color);
}
body[data-theme="dark"] .ai-message.error {
    background-color: #3f2222;
}

.ai-panel-footer {
    display: flex;
    align-items: flex-start;
    padding: 12px 16px;
    border-top: 1px solid var(--border-color);
    flex-shrink: 0;
}
#ismartai-input {
    flex-grow: 1;
    padding: 8px 12px;
    border-radius: 6px;
    border: 1px solid var(--border-color);
    background-color: var(--bg-color);
    color: var(--text-primary);
    font-family: inherit;
    font-size: 14px;
    resize: none;
    max-height: 150px;
    overflow-y: auto;
}
#ismartai-input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 2px var(--primary-bg);
}
#ismartai-send-btn {
    margin-left: 8px;
    height: 38px;
    width: 38px;
    border-radius: 6px;
    background-color: var(--primary-color);
    color: white;
}
#ismartai-send-btn:hover {
    background-color: var(--primary-hover);
}
#ismartai-send-btn:disabled {
    opacity: 0.5;
    background-color: var(--text-tertiary);
    cursor: not-allowed;
}
/* ==========================================================================
   Document View: Layout & Ribbon --- MODIFICATIONS
   ========================================================================== */

/* Remove the AI button from the top row if it exists */
.main-actions #ismartai-btn-doc {
    display: none;
}

/* Adjust the extension area to align correctly on the second row */
.ribbon-extension-area {
    margin-left: auto;
    padding-left: 8px;
    border-left: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    gap: 8px;
}

/* Style for the new image icons in the extension area */
.ribbon-extension-area .icon-btn img {
    width: 28px;
    height: 28px;
    object-fit: contain;
    border-radius: 3px;
    transition: transform 0.2s ease;
}

.ribbon-extension-area .icon-btn:hover img {
    transform: scale(1.1);
}