/* ifp/static/css/viewer_theme.css */
/* === THEME VARIABLES (Updated for 2026 Look) === */
:root {
    /* Typography */
    --font-primary: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif, "Apple Color Emoji", "Segoe UI", "Segoe UI Symbol";
    --font-monospace: "JetBrains Mono", "SFMono-Regular", Consolas, "Liberation Mono", Menlo, Courier, monospace;
    --font-size-sm: 0.875rem; /* 14px */
    --font-size-md: 1rem;    /* 16px */
    --font-size-lg: 1.125rem; /* 18px */
    --line-height-normal: 1.6;

    /* Spacing & Sizing */
    --spacing-unit: 8px;
    --spacing-xxs: calc(var(--spacing-unit) * 0.25); /* 2px */
    --spacing-xs: calc(var(--spacing-unit) * 0.5);  /* 4px */
    --spacing-sm: var(--spacing-unit);              /* 8px */
    --spacing-md: calc(var(--spacing-unit) * 1.5);  /* 12px */
    --spacing-lg: calc(var(--spacing-unit) * 2);    /* 16px */
    --spacing-xl: calc(var(--spacing-unit) * 3);    /* 24px */
    --spacing-xxl: calc(var(--spacing-unit) * 4);   /* 32px */

    --toolbar-height: 56px;
    --worksheet-banner-height: 48px;
    --sidebar-home-width: 280px;
    --sidebar-home-width-collapsed: 44px; /* MODIFICATION: Reduced from 64px */


    /* Borders & Radius */
    --border-radius-sm: 4px;
    --border-radius-md: 6px;
    --border-radius-lg: 8px;
    --border-width: 1px;
    --border-width-lg: 2px;

    /* Colors - Professional & Modern Palette */
    --color-primary-main: #007aff;
    --color-primary-light: #e6f2ff; /* Lightened for hover */
    --color-primary-dark: #0056b3;

    --color-secondary-main: #6c757d;
    --color-secondary-light: #f8f9fa;
    --color-secondary-dark: #495057;

    --color-background-body: #f8f9fa;
    --color-background-surface: #ffffff;
    --color-background-lvl1: #f1f3f5;
    --color-background-lvl2: #e9ecef;
    --color-background-overlay: rgba(0, 0, 0, 0.5);
    --color-background-interactive: #e8eef3; /* Used for general button hover */
    --color-background-interactive-hover: #dde6ed; /* Darker shade for active/pressed */


    --color-text-primary: #212529;
    --color-text-secondary: #495057;
    --color-text-tertiary: #6c757d;
    --color-text-on-primary: #ffffff;
    --color-text-on-dark: #ffffff;
    --color-text-link: var(--color-primary-main);
    --color-text-error: #dc3545;
    --color-text-success: #198754;
    --color-text-warning: #ffc107;
    --color-text-warning-dark: #997404; /* Darker warning color for text on light warning bg */


    --color-border-primary: #dee2e6;
    --color-border-secondary: #ced4da;
    --color-border-input: #ced4da;
    --color-border-focus: var(--color-primary-main);
    --color-border-error: var(--color-text-error);
    --color-border-warning: var(--color-text-warning);
    --color-warning-yellow-text-darker: #664d03;


    --color-icon-primary: #495057;
    --color-icon-secondary: #6c757d;

    /* Shadows - Subtle and layered */
    --shadow-xs: 0 1px 2px 0 rgba(0, 0, 0, 0.03);
    --shadow-sm: 0 1px 3px 0 rgba(0, 0, 0, 0.06), 0 1px 2px 0 rgba(0, 0, 0, 0.04);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.08), 0 2px 4px -1px rgba(0, 0, 0, 0.05);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.08), 0 4px 6px -2px rgba(0, 0, 0, 0.04);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.08), 0 10px 10px -5px rgba(0, 0, 0, 0.03);
    --shadow-focus-ring: 0 0 0 3px rgba(0, 122, 255, 0.25);

    /* PDF Highlight Opacity */
    --hl-opacity: 0.3;
}

/* === GLOBAL & BODY === */
*, *::before, *::after {
  box-sizing: border-box;
}
body {
    margin:0;
    display:flex;
    flex-direction: column;
    height:100vh;
    overflow:hidden;
    font-family: var(--font-primary);
    background-color: var(--color-background-body);
    color: var(--color-text-primary);
    font-size: var(--font-size-sm);
    line-height: var(--line-height-normal);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}
body.col-resizing, body.col-resizing * {
    cursor: col-resize !important;
    -webkit-user-select: none !important; /* Chrome / Edge / Safari */
    -moz-user-select:    none !important; /* Firefox */
    -ms-user-select:     none !important; /* IE / Edge‑Legacy */
    user-select:         none !important; /* Standard */
}

/* === GLOBAL LOADER & LOADING STATE === */
#global-loader {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: var(--color-background-body);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 9999;
    transition: opacity 0.3s ease-in-out;
}
body.loading #global-loader {
    opacity: 1;
}
body:not(.loading) #global-loader {
    opacity: 0;
    pointer-events: none;
}
body.loading #top-toolbar,
body.loading #main-content-area {
    visibility: hidden;
}


h1, h2, h3, h4, h5, h6 {
  margin-top: 0;
  margin-bottom: var(--spacing-lg);
  font-weight: 600;
  line-height: 1.3;
}

/* === TOP TOOLBAR === */
#top-toolbar {
    display: flex;
    align-items: center;
    padding: 0 var(--spacing-xl);
    background-color: var(--color-background-surface);
    color: var(--color-text-primary);
    width: 100%;
    height: var(--toolbar-height);
    box-sizing: border-box;
    z-index: 100;
    flex-shrink: 0;
    border-bottom: var(--border-width) solid var(--color-border-primary);
    box-shadow: var(--shadow-sm);
}
#top-toolbar-left {
    flex-grow: 1;
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    min-width: 0;
}
#doc-switcher-container{
    position: relative;
    display: inline-flex;
    align-items: center;
    cursor: pointer;
    padding: var(--spacing-sm) var(--spacing-md);
    margin: calc(-1 * var(--spacing-sm)) calc(-1 * var(--spacing-md));
    border-radius: var(--border-radius-md);
    transition: background-color 0.15s ease-in-out;
    max-width: 400px;
}
#doc-switcher-container:hover {
    background-color: var(--color-background-interactive);
}
#doc-title-display {
    font-size: var(--font-size-lg);
    font-weight: 600;
    color: var(--color-text-primary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    vertical-align: middle;
}
#doc-switcher-arrow {
    display: inline-block;
    width: 0.45em;
    height: 0.45em;
    border-right: 0.15em solid var(--color-text-secondary);
    border-bottom: 0.15em solid var(--color-text-secondary);
    transform: translateY(-25%) rotate(45deg);
    transition: transform 0.2s ease-in-out;
    margin-left: var(--spacing-sm);
    vertical-align: middle;
    opacity: 0.7;
}
#doc-switcher-container.open #doc-switcher-arrow {
    transform: translateY(0%) rotate(225deg);
}

/* === DOC SWITCHER (MODIFIED FOR TABS) === */
#doc-switcher-menu {
    position: absolute;
    top: calc(100% + var(--spacing-xs));
    left: 0;
    background-color: var(--color-background-surface);
    border: var(--border-width) solid var(--color-border-primary);
    box-shadow: var(--shadow-lg);
    z-index: 101;
    width: 450px; /* Fixed width for better layout */
    max-width: 450px;
    max-height: 70vh;
    list-style: none;
    padding: 0; /* Removed padding */
    margin: 0;
    border-radius: var(--border-radius-md);
    display: none; /* Initially hidden */
    flex-direction: column;
}
#doc-switcher-container.open #doc-switcher-menu { display: flex; }

.doc-switcher-tabs {
    display: flex;
    border-bottom: 1px solid var(--color-border-primary);
    flex-shrink: 0;
}
.doc-switcher-tab-btn {
    flex-grow: 1;
    padding: var(--spacing-md) var(--spacing-lg);
    font-size: var(--font-size-sm);
    font-weight: 600;
    color: var(--color-text-secondary);
    background-color: transparent;
    border: none;
    border-bottom: 2px solid transparent;
    cursor: pointer;
    transition: color 0.2s, border-color 0.2s;
    margin-bottom: -1px; /* Overlap border */
}
.doc-switcher-tab-btn:hover {
    color: var(--color-text-primary);
}
.doc-switcher-tab-btn.active {
    color: var(--color-primary-main);
    border-bottom-color: var(--color-primary-main);
}

.doc-switcher-panels {
    flex-grow: 1;
    overflow-y: auto;
    position: relative;
}
.doc-switcher-panel {
    display: none;
}
.doc-switcher-panel.active {
    display: block;
}
.doc-switcher-list {
    list-style: none;
    padding: 0;
    margin: 0;
}
.doc-switcher-list li {
    padding: var(--spacing-sm) var(--spacing-lg);
    font-size: var(--font-size-sm);
    font-weight: 500;
    color: var(--color-text-primary);
    cursor: pointer;
    transition: background-color 0.1s ease-in-out, color 0.1s ease-in-out;
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    border-bottom: 1px solid var(--color-border-primary);
}
.doc-switcher-list li:last-child {
    border-bottom: none;
}
.doc-switcher-list li:hover {
    background-color: var(--color-background-interactive);
}
.doc-switcher-list li.current-doc {
    background-color: var(--color-primary-light);
    font-weight: 600;
}
.doc-switcher-list li.pinned-doc {
    background-color: var(--color-background-lvl2);
    position: sticky;
    top: 0;
    z-index: 2;
    border-bottom-width: 2px;
    border-bottom-color: var(--color-border-secondary);
}
.doc-switcher-list li.pinned-doc:hover {
    background-color: var(--color-background-interactive-hover);
}

.doc-item-main-content {
    flex-grow: 1;
    min-width: 0;
}
.doc-item-name {
    display: block;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}
.doc-item-avatars {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    margin-top: var(--spacing-xs);
}
.doc-item-avatars .user-avatar {
    width: 20px;
    height: 20px;
    font-size: 0.7rem;
}
.doc-item-avatars .user-avatar.avatar-reviewed {
    box-shadow: 0 0 0 1.5px var(--color-background-surface), 0 0 0 3px var(--color-text-success);
}

.doc-switcher-list .dropdown-loader,
.doc-switcher-list .dropdown-error,
.doc-switcher-list .dropdown-empty {
    padding: var(--spacing-xl);
    text-align: center;
    color: var(--color-text-secondary);
    font-style: italic;
    cursor: default;
    display: block;
}
.doc-switcher-list .dropdown-error {
    color: var(--color-text-error);
}


#top-toolbar-right { display: flex; align-items: center; gap: var(--spacing-sm); flex-shrink:0; }
.toolbar-button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-sm) var(--spacing-md);
    font-size: var(--font-size-sm);
    font-weight: 500;
    border: var(--border-width) solid var(--color-border-primary);
    background-color: transparent;
    color: var(--color-text-secondary);
    border-radius: var(--border-radius-md);
    cursor: pointer;
    transition: background-color 0.15s ease-in-out, color 0.15s ease-in-out, border-color 0.15s ease-in-out, box-shadow 0.15s ease-in-out;
    text-transform: none;
    letter-spacing: normal;
}
.toolbar-button:hover,
#top-toolbar #export-modal-btn:hover,
#top-toolbar #home-export-modal-btn:hover,
#top-toolbar #open-upload-modal-btn:hover,
#top-toolbar #project-settings-btn:hover,
#top-toolbar #viewer-reprocess-btn:hover,
#batch-actions-toolbar .toolbar-button:not(#batch-delete-btn):not(#batch-cancel-reprocessing-btn):hover,
#document-filter-bar .toolbar-button:hover {
    background-color: var(--color-background-interactive);
    color: var(--color-primary-dark);
    border-color: var(--color-primary-main);
}

.toolbar-button:active,
#batch-actions-toolbar .toolbar-button:active,
#document-filter-bar .toolbar-button:active {
    background-color: var(--color-background-interactive-hover);
    transform: translateY(1px);
}

.toolbar-button.is-loading {
    pointer-events: none;
    opacity: 0.7;
}
.toolbar-button.is-loading .icon-text {
    display: none;
}
.spinner-icon {
    display: none;
}
.toolbar-button.is-loading .spinner-icon {
    display: inline-block;
    width: 1em;
    height: 1em;
    border: 2px solid currentColor;
    border-top-color: transparent;
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

#top-toolbar #review-btn {
    color: var(--color-secondary-dark);
}
#top-toolbar #review-btn:hover {
    background-color: var(--color-primary-light);
    border-color: var(--color-primary-main);
    color: var(--color-primary-dark);
}
#top-toolbar #review-btn.reviewed {
    background-color: var(--color-text-success);
    border-color: var(--color-text-success);
    color: var(--color-text-on-primary);
}
#top-toolbar #review-btn.reviewed:hover {
    background-color: #16794b;        /* ≈ var(--color-text-success) mixed 10 % with black */
    border-color:     #16794b;
}

#batch-delete-btn,
#batch-cancel-reprocessing-btn {
    background-color: transparent;
    border-color: var(--color-border-primary);
    color: var(--color-text-secondary);
}
#batch-delete-btn:hover,
#batch-cancel-reprocessing-btn:hover {
    background-color: rgba(220,53,69,0.1); /* 10 % error red */
    border-color: var(--color-text-error);
    color: var(--color-text-error);
}
#batch-delete-btn:active,
#batch-cancel-reprocessing-btn:active {
    background-color: rgba(220,53,69,0.2); /* 20 % error red */
}

.toolbar-button.disabled-single-project {
    opacity: 0.65;
    cursor: default;
}
.toolbar-button.disabled-single-project:hover,
.toolbar-button.disabled-single-project:focus-visible {
    background-color: transparent;
    border-color: var(--color-border-primary);
    color: var(--color-text-secondary);
    box-shadow: none;
    transform: none;
}


#assign-user-controls {
    align-items: center;
}

/* === MAIN CONTENT AREA === */
#main-content-area {
  height: calc(100vh - var(--toolbar-height)); display: flex;
  overflow: hidden; flex-grow: 1;
  position: relative;
}
body.viewer-body #main-content-area {
    visibility: hidden;
}
body.viewer-body #main-content-area.ready {
    visibility: visible;
}

/* === THUMBNAILS PANE === */
#thumbs {
    flex-shrink: 0;
    flex-grow: 0;
    flex-basis: var(--thumbs-pane-width, 120px);
    overflow-y: auto;
    background: var(--color-background-lvl1);
    border-right: var(--border-width) solid var(--color-border-primary);
    border-right-width: var(--thumbs-pane-border-width, 1px);
    padding: var(--spacing-sm) 0;
    box-sizing: border-box;
    min-width: 0;
    max-width: 300px;
    transition: flex-basis 0.3s ease-in-out, padding 0.3s ease-in-out, border-right-width 0.3s ease-in-out;
}
body.thumbs-collapsed #thumbs {
    flex-basis: 0 !important;
    padding: 0;
    overflow: hidden;
    border-right-width: 0;
}

.thumbnail-container {
    position: relative;
    width: 60px;
    margin: 0 auto;
    cursor: pointer;
    border: var(--border-width-lg) solid transparent;
    border-radius: var(--border-radius-md);
    box-shadow: var(--shadow-xs);
    transition: border-color 0.2s ease-in-out, box-shadow 0.2s ease-in-out, transform 0.15s ease-in-out;
    outline-offset: 2px;
}
.thumbnail-container:hover {
    border-color: var(--color-primary-main);
    transform: scale(1.02);
    box-shadow: var(--shadow-sm);
}
.thumbnail-container.active {
    border-color: var(--color-primary-dark);
    box-shadow: var(--shadow-md), 0 0 0 2px var(--color-primary-main);
    transform: scale(1.04);
}

@keyframes shimmer {
    0% { background-position: -150px 0; }
    100% { background-position: 150px 0; }
}
.thumbnail-container img {
    width: 100%;
    height: auto;
    display: block;
    border-radius: var(--border-radius-sm);
    background-color: var(--color-background-lvl2);
    background-image: linear-gradient(to right,
        var(--color-background-lvl2) 0%,
        var(--color-background-lvl1) 40%,
        var(--color-background-lvl2) 80%,
        var(--color-background-lvl2) 100%);
    background-repeat: no-repeat;
    background-size: 300px 100%;
    animation: shimmer 1.5s linear infinite;
    opacity: 0;
    transition: opacity 0.4s ease-in-out;
}
.thumbnail-container img.loaded {
    opacity: 1;
    animation: none;
    background-image: none;
    background-color: var(--color-background-surface);
}

.thumbnail-page-number {
    position: absolute;
    bottom: 2px;
    right: 4px;
    background-color: rgba(0, 0, 0, 0.6);
    color: white;
    font-size: 10px;
    font-weight: 600;
    padding: 1px 4px;
    border-radius: var(--border-radius-sm);
    transition: all 0.2s ease-in-out;
    opacity: 0;
    pointer-events: none;
}

#thumbs:hover .thumbnail-page-number {
    opacity: 1;
}
.thumbnail-container:hover:not(.active) .thumbnail-page-number {
    background-color: var(--color-secondary-dark);
    transform: scale(1.1);
}
.thumbnail-container.active .thumbnail-page-number {
    opacity: 1;
    background-color: var(--color-primary-main);
    color: var(--color-text-on-primary);
    transform: scale(1.1);
    box-shadow: var(--shadow-sm);
}


/* === PDF PANE === */
#pdf {
    flex: 1 1 0;
    overflow-y: auto;
    overflow-x: hidden;
    background: var(--color-background-body);
    position: relative;
    padding: var(--spacing-lg);
    box-sizing: border-box;
    display: flex;
    justify-content: center;
    min-width: 400px;
}
#page-wrapper {
    width: 100%;
    transform-origin: top center;
}
#pdf.redrawing {
    visibility: hidden;
}
.pageContainer {
    position: relative;
    margin: 0 auto var(--spacing-lg) auto;
    box-shadow: var(--shadow-md);
    background-color: var(--color-background-surface);
    border-radius: var(--border-radius-md);
    transform-origin: top center;
}
.pageContainer.loading-canvas::before {
    content: '';
    position: absolute;
    top: 50%; left: 50%;
    width: 32px;
    height: 32px;
    margin-left: -16px;
    margin-top: -16px;
    border: 3px solid var(--color-primary-light);
    border-top-color: var(--color-primary-main);
    border-radius: 50%;
    animation: spin 0.7s linear infinite;
    z-index: 1;
}
.pageContainer.loading-canvas canvas {
    opacity: 0.4;
}
.pageContainer canvas {
    display: block;
    image-rendering: -webkit-optimize-contrast;
    image-rendering: pixelated;
    border-radius: var(--border-radius-md);
}

/* === RESIZER (for viewer.html) === */
.resizer {
    width: 6px;
    cursor: ew-resize;
    background-color: var(--color-border-primary);
    z-index: 20;
    flex-shrink: 0;
    transition: background-color 0.2s ease-in-out;
    position: relative;
    outline-offset: -2px;
}
.resizer:hover, .resizer:focus-visible {
    background-color: var(--color-primary-main);
}
.resizer::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 2px;
    height: 24px;
    background-color: var(--color-text-on-primary);
    border-radius: var(--border-radius-sm);
    transform: translate(-50%, -50%);
    opacity: 0;
    transition: opacity 0.2s ease-in-out;
}
.resizer:hover::before, .resizer:focus-visible::before {
    opacity: 0.6;
}
body.thumbs-collapsed #resizer-left {
    background-color: var(--color-background-lvl2);
}
body.thumbs-collapsed #resizer-left:hover {
    background-color: var(--color-primary-main);
}
body.thumbs-collapsed #resizer-left::before {
    opacity: 0;
}


/* === SIDEBAR PANE === */
#side {
    flex-shrink: 0;
    flex-grow: 0;
    flex-basis: var(--sidebar-pane-width, 450px);
    display: flex;
    flex-direction: column;
    overflow: hidden;
    background: var(--color-background-surface);
    border-left: var(--border-width) solid var(--color-border-primary);
    min-width: 320px;
    position: relative;
}

/* WORKSHEET BANNER & DROPDOWN */
#worksheet-banner {
    height: var(--worksheet-banner-height);
    background-color: var(--color-background-surface);
    border-bottom: var(--border-width) solid var(--color-border-primary);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 var(--spacing-lg);
    font-size: var(--font-size-md);
    font-weight: 500;
    color: var(--color-text-primary);
    position: relative;
    flex-shrink: 0;
}
#worksheet-title-wrapper {
    flex-grow: 1;
    text-align: left;
    overflow: hidden;
    padding-right: var(--spacing-md);
}
#current-worksheet-name {
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    font-weight: 600;
}
#worksheet-dropdown-container {
    position: relative;
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    cursor: pointer;
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--border-radius-md);
    transition: background-color 0.15s ease-in-out;
    margin: calc(-1 * var(--spacing-xs)) 0;
}
#worksheet-dropdown-container:hover {
    background-color: var(--color-background-interactive);
}
.worksheet-dropdown-label {
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
    font-weight: 500;
}
#worksheet-dropdown-arrow {
    display: inline-block;
    width: 0.5em;
    height: 0.5em;
    border-right: 0.15em solid var(--color-text-secondary);
    border-bottom: 0.15em solid var(--color-text-secondary);
    transform: translateY(-25%) rotate(45deg);
    transition: transform 0.2s ease-in-out;
}
#worksheet-banner.open #worksheet-dropdown-arrow {
    transform: translateY(0%) rotate(225deg);
}
#worksheet-dropdown-menu {
    display: none;
    position: absolute;
    top: calc(100% + var(--spacing-xs));
    right: 0;
    background-color: var(--color-background-surface);
    border: var(--border-width) solid var(--color-border-primary);
    box-shadow: var(--shadow-lg);
    z-index: 101;
    min-width: 250px;
    max-height: 300px;
    overflow-y: auto;
    list-style: none;
    padding: var(--spacing-sm) 0;
    margin: 0;
    border-radius: var(--border-radius-md);
}
#worksheet-banner.open #worksheet-dropdown-menu { display: block; }
#worksheet-dropdown-menu li {
    padding: var(--spacing-sm) var(--spacing-lg);
    font-size: var(--font-size-sm);
    font-weight: 500;
    color: var(--color-text-primary);
    cursor: pointer;
    transition: background-color 0.1s ease-in-out, color 0.1s ease-in-out;
}
#worksheet-dropdown-menu li:hover {
    background-color: var(--color-background-interactive);
    color: var(--color-primary-dark);
}
#worksheet-dropdown-menu li.active-worksheet {
    background-color: var(--color-primary-main);
    color: var(--color-text-on-primary);
    font-weight: 600;
}
#worksheet-dropdown-menu li.active-worksheet:hover {
    background-color: var(--color-primary-dark);
}

/* SIDEBAR CONTENT AREA & SCROLLBAR */
#sidebar-content-area {
    height: calc(100% - var(--worksheet-banner-height));
    overflow-y: auto;
    padding: var(--spacing-lg);
    font-size: var(--font-size-sm);
    line-height: var(--line-height-normal);
    color: var(--color-text-primary);
    position: relative;
}
/* Global Worksheet Reprocessing Toast */
.global-toast {
    position: fixed;
    top: calc(var(--toolbar-height) + var(--spacing-lg));
    left: 50%;
    transform: translateX(-50%) translateY(-150%);
    background-color: var(--color-secondary-dark);
    color: var(--color-text-on-dark);
    padding: var(--spacing-md) var(--spacing-xl);
    border-radius: var(--border-radius-md);
    box-shadow: var(--shadow-lg);
    z-index: 2000;
    font-size: var(--font-size-md);
    font-weight: 500;
    opacity: 0;
    transition: opacity 0.3s ease-in-out, transform 0.4s cubic-bezier(0.25, 0.8, 0.25, 1);
    pointer-events: none;
}
.global-toast.visible {
    opacity: 0.95;
    transform: translateX(-50%) translateY(0);
}
#toast-worksheet-name-placeholder {
    font-weight: 600;
}


/* Custom Scrollbar Styling - uses standard properties with WebKit fallbacks for cross-browser compatibility. */
#thumbs, #sidebar-content-area, #pdf, #sidebar-home, #content-pane-home, #content-pane-concepts, #content-pane-worksheets, #document-list-container {
    scrollbar-width: thin;
    scrollbar-color: var(--color-border-secondary) var(--color-background-lvl1);
}
#thumbs::-webkit-scrollbar,
#sidebar-content-area::-webkit-scrollbar,
#pdf::-webkit-scrollbar,
#sidebar-home::-webkit-scrollbar,
#content-pane-home::-webkit-scrollbar,
#content-pane-concepts::-webkit-scrollbar,
#content-pane-worksheets::-webkit-scrollbar,
#document-list-container::-webkit-scrollbar {
    width: var(--spacing-sm);
    height: var(--spacing-sm);
}
#thumbs::-webkit-scrollbar-track,
#sidebar-content-area::-webkit-scrollbar-track,
#pdf::-webkit-scrollbar-track,
#sidebar-home::-webkit-scrollbar-track,
#content-pane-home::-webkit-scrollbar-track,
#content-pane-concepts::-webkit-scrollbar-track,
#content-pane-worksheets::-webkit-scrollbar-track,
#document-list-container::-webkit-scrollbar-track {
    background: var(--color-background-lvl1);
}
#thumbs::-webkit-scrollbar-thumb,
#sidebar-content-area::-webkit-scrollbar-thumb,
#pdf::-webkit-scrollbar-thumb,
#sidebar-home::-webkit-scrollbar-thumb,
#content-pane-home::-webkit-scrollbar-thumb,
#content-pane-concepts::-webkit-scrollbar-thumb,
#content-pane-worksheets::-webkit-scrollbar-thumb,
#document-list-container::-webkit-scrollbar-thumb {
    background-color: var(--color-border-secondary);
    border-radius: var(--border-radius-md);
    border: 2px solid var(--color-background-lvl1);
}
#thumbs::-webkit-scrollbar-thumb:hover,
#sidebar-content-area::-webkit-scrollbar-thumb:hover,
#pdf::-webkit-scrollbar-thumb:hover,
#sidebar-home::-webkit-scrollbar-thumb:hover,
#content-pane-home::-webkit-scrollbar-thumb:hover,
#content-pane-concepts::-webkit-scrollbar-thumb:hover,
#content-pane-worksheets::-webkit-scrollbar-thumb:hover,
#document-list-container::-webkit-scrollbar-thumb:hover {
    background-color: var(--color-border-secondary);
}

/* CONCEPT SECTIONS */
.concept-section {
    margin-bottom: var(--spacing-xl);
    border: var(--border-width) solid var(--color-border-primary);
    border-radius: var(--border-radius-lg);
    background-color: var(--color-background-surface);
    box-shadow: var(--shadow-sm);
    transition: box-shadow 0.2s ease-in-out, opacity 0.2s ease-in-out, background-color 0.2s ease-in-out;
}
.concept-section:hover { box-shadow: var(--shadow-md); }
.concept-section h3 {
    margin: 0;
    padding: var(--spacing-md) var(--spacing-lg);
    cursor: pointer;
    font-size: var(--font-size-md);
    font-weight: 600;
    color: var(--color-text-primary);
    background-color: transparent;
    border-bottom: var(--border-width) solid var(--color-border-primary);
    border-top-left-radius: var(--border-radius-lg);
    border-top-right-radius: var(--border-radius-lg);
    display: flex;
    align-items: center;
    justify-content: space-between;
    transition: background-color 0.15s ease-in-out;
}
.concept-section h3:hover { background-color: var(--color-background-lvl1); }
.concept-header-swatch {
    display: inline-block;
    width: 12px;
    height: 12px;
    border-radius: 50%;
    margin-right: var(--spacing-sm);
    vertical-align: middle;
    flex-shrink: 0;
    border: var(--border-width) solid rgba(0,0,0,0.1);
}
.concept-title-group {
    display: flex;
    align-items: center;
    flex-grow: 1;
    margin-right: var(--spacing-sm);
    overflow: hidden;
}
.concept-title-group span:last-child {
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}
.concept-header-actions {
    display: flex;
    align-items: center;
    margin-left: auto;
    flex-shrink: 0;
}
.header-confidence-icons {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    flex-shrink: 0;
}
.header-conf-icon-item {
    display: flex;
    align-items: center;
    font-size: var(--font-size-sm);
    padding: var(--spacing-xxs) var(--spacing-xs);
    border-radius: var(--border-radius-sm);
}
.header-conf-icon-item .icon-char {
    font-weight: bold;
    font-size: 1.1em;
    margin-right: var(--spacing-xxs);
}
.concept-section h3::after {
    content: '';
    display: inline-block;
    width: 0.5em;
    height: 0.5em;
    border-right: 0.15em solid var(--color-text-secondary);
    border-bottom: 0.15em solid var(--color-text-secondary);
    transform: rotate(45deg);
    transition: transform 0.2s ease-in-out;
    margin-left: var(--spacing-sm);
    flex-shrink: 0;
}
.concept-section.collapsed > h3::after { transform: rotate(-45deg); }
.concept-section-content { padding: var(--spacing-lg); }
.concept-section.collapsed > .concept-section-content { display: none; }

/* Concept Reprocessing Styles (Viewer Sidebar) */
.concept-reprocess-btn {
    padding: 3px 4px !important;
    font-size: 0.9em !important;
    line-height: 1 !important;
    background-color: transparent;
    border: 1px solid transparent;
    opacity: 0.5;
    transition: opacity 0.2s, background-color 0.2s, border-color 0.2s, transform 0.15s ease-in-out;
    order: 2; /* NEW: Ensure it's after spinner/cancel */
    margin-right: var(--spacing-xs);
    display: inline-flex;
    align-items: center;
    justify-content: center;
}
.concept-reprocess-btn:hover {
    opacity: 1;
    background-color: var(--color-background-interactive);
    transform: scale(1.1); /* Added hover effect */
}
.concept-section h3:hover .concept-reprocess-btn {
    opacity: 0.75;
}
.concept-header-spinner {
    display: none; /* Hidden by default */
    width: 16px;
    height: 16px;
    border: 2px solid var(--color-primary-main);
    border-top-color: transparent;
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
    margin-left: var(--spacing-xs); 
    order: 1;
}
.concept-cancel-btn {
    order: 0;
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background-color: transparent;
    border: none;
    color: var(--color-text-tertiary);
    font-size: 1.5em;
    line-height: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: background-color 0.15s, color 0.15s;
}
.concept-cancel-btn:hover {
    background-color: var(--color-background-interactive-hover);
    color: var(--color-text-error);
}
.concept-section.reprocessing-active > h3 .concept-reprocess-btn {
    display: none !important; 
}
.concept-section.reprocessing-active > h3 .concept-header-spinner,
.concept-section.reprocessing-active > h3 .concept-cancel-btn {
    display: inline-flex !important; 
}
.concept-section.reprocessing-active {
    opacity: 0.65;
    background-color: var(--color-background-lvl1);
}
.concept-section.reprocessing-active > h3 {
    cursor: default;
}
/* MODIFICATION: This is the key fix for the flicker. */
.concept-section.reprocessing-active > .concept-section-content {
    display: none !important;
}


/* EXTRACTS, SUMMARY, REASONING GROUPS & LABELS */
.extracts-group, .summary-group, .reasoning-group {
    padding: var(--spacing-xs) 0;
    margin-bottom: var(--spacing-md);
}
.extracts-group.collapsed > .extract-container,
.summary-group.collapsed > .summary-container,
.summary-group.collapsed > .ai-generated-notice,
.reasoning-group.collapsed > .reasoning-text {
    display: none;
}

.extracts-label, .summary-label, .reasoning-label {
    font-size: 0.8rem;
    font-weight: 600;
    margin-bottom: var(--spacing-md);
    color: var(--color-text-secondary);
    cursor: pointer;
    display: flex;
    align-items: center;
    text-transform: uppercase;
    letter-spacing: 0.8px;
    padding: var(--spacing-xs) 0;
    border-radius: var(--border-radius-sm);
    transition: color 0.1s ease-in-out;
    opacity: 1;
}
.extracts-label:hover, .summary-label:hover, .reasoning-label:hover,
.extracts-label:focus-visible, .summary-label:focus-visible, .reasoning-label:focus-visible {
    color: var(--color-primary-main);
    background-color: transparent;
}
.extracts-label::after, .summary-label::after, .reasoning-label::after {
    content: '';
    display: inline-block;
    width: 0.4em;
    height: 0.4em;
    border-right: 0.12em solid currentColor;
    border-bottom: 0.12em solid currentColor;
    transform: rotate(45deg);
    transition: transform 0.2s ease-in-out;
    margin-left: var(--spacing-xs);
}
.extracts-group.collapsed > .extracts-label::after,
.summary-group.collapsed > .summary-label::after,
.reasoning-group.collapsed > .reasoning-label::after { transform: rotate(-45deg); }

/* INDIVIDUAL EXTRACTS */
.extract-container {
    position: relative;
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    margin: var(--spacing-sm) 0;
}
.extract {
    flex-grow: 1;
    padding: var(--spacing-sm) var(--spacing-md);
    white-space: pre-line;
    background-color: var(--color-background-lvl1);
    border-radius: var(--border-radius-md);
    transition: background-color 0.15s ease-in-out, border-left-color 0.15s ease-in-out, box-shadow 0.15s ease-in-out;
    font-size: 0.9rem;
    line-height: var(--line-height-normal);
    color: var(--color-text-primary);
    border: 1px solid var(--color-border-input);
}
.extract:hover, .extract[contenteditable="true"]:hover {
    background-color: var(--color-background-lvl2);
    box-shadow: var(--shadow-xs);
}
.extract.active {
    box-shadow: var(--shadow-sm);
}
.extract-container .close-btn {
    position: absolute;
    top: var(--spacing-xs); right: var(--spacing-xs);
    width: 18px; height: 18px;
    opacity: 0.5; cursor: pointer;
    transition: opacity 0.2s, transform 0.2s;
    display: flex; align-items: center; justify-content: center;
    z-index: 5;
}
.extract-container .close-btn::before, .extract-container .close-btn::after {
    position: absolute; content: ' ';
    height: 12px; width: 2px;
    background-color: var(--color-text-secondary);
    border-radius: 1px;
}
.extract-container .close-btn::before { transform: rotate(45deg); }
.extract-container .close-btn::after { transform: rotate(-45deg); }
.extract-container:hover .close-btn { opacity: 0.8; }
.extract-container .close-btn:hover { opacity: 1; transform: scale(1.1); }
.extract-container .close-btn:hover::before, .extract-container .close-btn:hover::after {
    background-color: var(--color-text-error);
}

/* AI GENERATED NOTICE & CONFIDENCE */
.ai-generated-notice {
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
    margin-top: var(--spacing-xs);
    margin-bottom: var(--spacing-xs);
    cursor: default;
    display: inline-flex;
    align-items: center;
    padding: var(--spacing-xs) 0;
    border-radius: var(--border-radius-sm);
}

.inline-warning-icon {
    display: inline-block;
    font-weight: bold;
    cursor: help;
    color: var(--color-text-error);
    font-size: 1.5em;
    flex-shrink: 0;
    -webkit-user-select: none;
    user-select: none;
    margin-right: var(--spacing-xs);
}

.has-low-confidence {
    border-left-width: 3px !important;
    border-left-style: solid !important;
    border-left-color: var(--color-text-error) !important;
}


/* CONCEPT SUMMARY */
.summary-container {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}
.concept-summary {
    white-space: pre-line;
    color: var(--color-text-primary);
    margin: var(--spacing-xs) 0 var(--spacing-sm);
    font-size: var(--font-size-sm);
    padding: var(--spacing-sm) var(--spacing-md);
    background-color: var(--color-background-surface);
    border: 1px solid var(--color-border-input);
    border-radius: var(--border-radius-md);
    line-height: var(--line-height-normal);
    min-height: 3em;
    flex-grow: 1;
}
.concept-summary[contenteditable]:focus {
    outline: none;
    border-color: var(--color-border-focus);
    box-shadow: var(--shadow-focus-ring);
}
 .concept-summary span[style*="font-style: italic"] {
    color: var(--color-text-tertiary);
}
.concept-summary.is-placeholder {
    font-style: italic;
    color: var(--color-text-tertiary);
}


/* REASONING TEXT */
.reasoning-text {
    white-space: pre-wrap;
    font-family: var(--font-monospace);
    font-size: 0.85rem;
    color: var(--color-text-secondary);
    padding: var(--spacing-sm) var(--spacing-md);
    background-color: var(--color-background-lvl1);
    border: 1px solid var(--color-border-primary);
    border-radius: var(--border-radius-sm);
    line-height: 1.5;
    max-height: 200px;
    overflow-y: auto;
}
 .extracts-group > p[style*="font-style: italic"],
.summary-group > p[style*="font-style: italic"] {
     padding: var(--spacing-sm) 0;
     color: var(--color-text-tertiary);
}


/* RAW LLM (DEV ONLY) */
.raw-llm {
  max-height: 20vh; overflow: auto; background: var(--color-background-lvl1);
  border: 1px solid var(--color-border-primary);
  white-space: pre-wrap; font-family: var(--font-monospace); padding: var(--spacing-sm);
  margin: var(--spacing-xs) 0; font-size: 11px;
  border-radius: var(--border-radius-sm);
  color: var(--color-text-secondary);
}

/* === PDF HIGHLIGHTS === */
.pdf-highlight {
    position: absolute;
    pointer-events: auto;
    cursor: pointer;
    opacity: var(--hl-opacity);
    mix-blend-mode: multiply;
    z-index: 10;
    transition: box-shadow 0.15s ease-in-out, opacity 0.15s ease-in-out;
    border-radius: var(--border-radius-sm);
}
.pdf-highlight:hover { box-shadow: 0 0 8px rgba(0,0,0,0.2); }
.pdf-highlight.active { box-shadow: 0 0 10px rgba(0,0,0,0.3); }
@media (prefers-reduced-motion:reduce) { .pdf-highlight { transition:none; }}

/* === TEXT LAYER === */
.textLayer { position: absolute; top: 0; left: 0; color: transparent; pointer-events: none; overflow: hidden; line-height: 1; }
.textLayer span { position: absolute; white-space: pre; transform-origin: 0% 0%; line-height: 1; pointer-events: auto; cursor: text; }
.textLayer .endOfContent { display: none; }

/* === UTILITY === */
.tail-spacer { height: 50vh; }
.watermark-banner { display: none; }
.hidden { display: none !important; }

/* === UTILITY & HELPER CLASSES === */
.placeholder-text {
    text-align: center;
    color: var(--color-text-tertiary);
}

/* === SAVE STATUS TOAST === */
#save-status {
    position: fixed;
    bottom: var(--spacing-xl);
    left: 50%;
    transform: translateX(-50%);
    font-family: var(--font-primary);
    font-size: var(--font-size-sm);
    line-height: 1.4;
    background: var(--color-secondary-dark);
    color: var(--color-text-on-dark);
    padding: var(--spacing-md) var(--spacing-xl);
    border-radius: var(--border-radius-md);
    z-index: 1001;
    box-shadow: var(--shadow-lg);
    transition: opacity 0.3s ease-in-out, transform 0.3s ease-in-out;
    opacity: 0;
    transform: translateX(-50%) translateY(20px);
    display: none;
}
#save-status.visible {
    opacity: 1;
    transform: translateX(-50%) translateY(0);
    display: block;
}
#save-status.error {
    background-color: var(--color-text-error);
    color: var(--color-text-on-primary);
}
#save-status.error::before {
    content: "⚠ ";
    margin-right: var(--spacing-sm);
    font-weight: bold;
}


/* === MODAL STYLES === */
.modal {
    position: fixed; z-index: 1000; left: 0; top: 0; width: 100%; height: 100%;
    background-color: var(--color-background-overlay);
    display: none;
    align-items: center; justify-content: center;
}
.modal.visible {
    display: flex;
}
.modal-content {
    background-color: var(--color-background-surface);
    padding: 0;
    border: none;
    width: 80%;
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-xl);
    display: flex; flex-direction: column; max-height: 90vh;
}
.modal-header {
    padding: var(--spacing-lg) var(--spacing-xl);
    background-color: var(--color-background-surface);
    color: var(--color-text-primary);
    border-bottom: var(--border-width) solid var(--color-border-primary);
    border-top-left-radius: var(--border-radius-lg);
    border-top-right-radius: var(--border-radius-lg);
    display: flex; justify-content: space-between; align-items: center;
    flex-shrink: 0;
}
.modal-header h2 { margin: 0; font-size: var(--font-size-lg); font-weight: 600; }
.modal-close-btn {
    color: var(--color-text-secondary);
    font-size: 28px; font-weight: bold; cursor: pointer;
    padding: 0 var(--spacing-sm); opacity: 0.7;
    transition: opacity 0.15s ease-in-out, color 0.15s ease-in-out;
    background: none; border: none;
}
.modal-close-btn:hover, .modal-close-btn:focus-visible { color: var(--color-text-primary); opacity: 1; }
.modal-body {
    padding: var(--spacing-xl);
    overflow-y: auto; flex-grow: 1;
    color: var(--color-text-primary);
}
.modal-footer {
    padding: var(--spacing-lg) var(--spacing-xl);
    background-color: var(--color-background-lvl1);
    border-top: var(--border-width) solid var(--color-border-primary); text-align: right;
    border-bottom-left-radius: var(--border-radius-lg);
    border-bottom-right-radius: var(--border-radius-lg);
    flex-shrink: 0;
    position: sticky;
    bottom: 0;
}
.modal-footer .toolbar-button {
    padding: var(--spacing-sm) var(--spacing-lg);
    font-size: var(--font-size-sm); border: var(--border-width) solid var(--color-primary-main);
    background-color: var(--color-primary-main); color: var(--color-text-on-primary);
    border-radius: var(--border-radius-md); cursor: pointer;
    transition: background-color 0.15s ease-in-out, border-color 0.15s ease-in-out;
    text-transform: none; letter-spacing: normal; font-weight: 500;
}
.modal-footer .toolbar-button:hover {
  background-color: var(--color-primary-dark);
  border-color: var(--color-primary-dark);
}
.toolbar-button:disabled,
.toolbar-button[disabled] {
    background-color: var(--color-background-lvl2) !important;
    border-color: var(--color-border-primary) !important;
    color: var(--color-text-tertiary) !important;
    cursor: not-allowed !important;
    opacity: 0.6;
}
.toolbar-button:disabled .icon,
.toolbar-button[disabled] .icon {
    opacity: 0.5 !important;
}


/* === EXPORT MODAL Specifics === */
.form-section {
    margin-bottom: var(--spacing-xl); padding-bottom: var(--spacing-lg);
    border-bottom: var(--border-width) solid var(--color-border-primary);
}
.form-section:last-child { border-bottom: none; margin-bottom: 0; padding-bottom: 0; }
.form-section h3, .form-section label {
    font-size: var(--font-size-md); color: var(--color-text-primary);
    margin-top: 0; margin-bottom: var(--spacing-md);
    font-weight: 600;
}
.form-subsection { margin-bottom: var(--spacing-sm); }
.checkbox-list {
    height: 150px;
    overflow-y: auto;
    border: var(--border-width) solid var(--color-border-input);
    padding: var(--spacing-sm);
    border-radius: var(--border-radius-md);
    background-color: var(--color-background-lvl1);
    display: flex;
    flex-direction: column;
}
#modal-doc-list p,
#modal-concept-list p,
#reprocess-modal-concept-list p,
#assign-user-list-container p {
    margin: auto;
    text-align: center;
    color: var(--color-text-tertiary);
    width: 100%;
}
.checkbox-list label {
    display: block; margin-bottom: var(--spacing-xs); font-weight: normal;
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--border-radius-sm); cursor: pointer;
    transition: background-color 0.1s ease-in-out;
}
.checkbox-list label:hover { background-color: var(--color-background-lvl2); }
.checkbox-list label input[type="checkbox"] { margin-right: var(--spacing-sm); vertical-align: middle; }

#viewer-modal-doc-list hr {
    border: none;
    border-top: 1px solid var(--color-border-secondary);
    margin: var(--spacing-sm) 0;
}

#modal-worksheet-select,
#reprocess-modal-worksheet-select,
.modal-body input[type="text"],
.modal-body input[type="number"],
.modal-body select {
    width: 100%; padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--border-radius-md);
    border: var(--border-width) solid var(--color-border-input);
    background-color: var(--color-background-surface);
    color: var(--color-text-primary); font-size: var(--font-size-sm);
    transition: border-color 0.15s ease-in-out, box-shadow 0.15s ease-in-out;
    box-sizing: border-box;
}
#modal-worksheet-select:focus,
#reprocess-modal-worksheet-select:focus,
.modal-body input[type="text"]:focus,
.modal-body input[type="number"]:focus,
.modal-body select:focus {
    border-color: var(--color-border-focus);
    outline: none;
    box-shadow: var(--shadow-focus-ring);
}
.form-inline-label { margin-right: var(--spacing-md); font-weight: normal; display: inline-flex; align-items: center;}
.form-inline-label input[type="radio"], .form-inline-label input[type="checkbox"] {
  margin-right: var(--spacing-xs); vertical-align: middle;
}
.note { font-size: 0.9em; color: var(--color-text-tertiary); margin-left: var(--spacing-xs); }


/* === UPLOAD MODAL Specifics === */
#upload-modal .modal-content {
    max-width: 650px;
    min-height: 400px;
}
.file-dropzone {
    flex-grow: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-xl);
    border: 2px dashed var(--color-border-secondary);
    border-radius: var(--border-radius-lg);
    background-color: transparent;
    text-align: center;
    cursor: pointer;
    transition: border-color 0.2s ease-in-out, background-color 0.2s ease-in-out;
}
.file-dropzone:not(.has-files):hover {
    background-color: var(--color-background-interactive);
}
.file-dropzone.dragover-active {
    border-color: var(--color-primary-main);
    background-color: var(--color-primary-light);
}
.file-dropzone.has-files {
    justify-content: flex-start;
    padding: var(--spacing-md);
    cursor: default;
    background-color: var(--color-background-surface);
}
.dropzone-prompt {
    color: var(--color-text-secondary);
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    text-align: center;
}
.file-dropzone.has-files .dropzone-prompt {
    display: none;
}
.dropzone-icon {
    color: var(--color-icon-secondary);
    margin-bottom: var(--spacing-md);
    transition: color 0.2s ease-in-out, transform 0.2s ease-in-out;
}
.file-dropzone.dragover-active .dropzone-icon {
    color: var(--color-primary-main);
    transform: scale(1.1);
}
.dropzone-text {
    font-size: var(--font-size-md);
    font-weight: 500;
    margin: 0;
}
.dropzone-text strong {
    color: var(--color-primary-main);
}
.dropzone-subtext {
    font-size: var(--font-size-sm);
    color: var(--color-text-tertiary);
    margin-top: var(--spacing-xs);
}
.file-dropzone.dragover-active .dropzone-text {
    font-size: 1.2rem;
    color: var(--color-primary-dark);
}
.file-dropzone.dragover-active .dropzone-subtext {
    display: none;
}
#modal-file-list-progress {
    width: 100%;
    list-style: none;
    padding: 0;
    margin: 0;
    max-height: 250px;
    overflow-y: auto;
}
#modal-file-list-progress li {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-sm) var(--spacing-md);
    font-size: var(--font-size-sm);
    background-color: var(--color-background-surface);
    border-bottom: 1px solid var(--color-border-primary);
    cursor: default;
}
#modal-file-list-progress li:last-child {
    border-bottom: none;
}
#modal-file-list-progress .file-name-modal {
    flex-grow: 1;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    margin-right: var(--spacing-sm);
}
#modal-file-list-progress .file-status-indicator-modal {
    font-size: 1em;
    flex-shrink: 0;
    display: flex;
    align-items: center;
}
#modal-file-list-progress .file-status-indicator-modal::before {
    display: inline-block;
    width: 1.2em;
    text-align: center;
}
#modal-file-list-progress .file-status-indicator-modal.status-loading .spinner {
    width: 16px;
    height: 16px;
    border-width: 2px;
    display: inline-block;
}
#modal-file-list-progress .file-status-indicator-modal.status-uploaded::before {
    content: '✓';
    color: var(--color-text-success);
    font-weight: bold;
    animation: none;
}
#modal-file-list-progress .file-status-indicator-modal.status-error::before {
    content: '⚠';
    color: var(--color-text-error);
    font-weight: bold;
    animation: none;
}


/* === CURRENTLY PROCESSING Section (Homepage Sidebar) === */
@keyframes complete-pop {
    0% { transform: scale(0.8); opacity: 0; }
    80% { transform: scale(1.1); }
    100% { transform: scale(1); opacity: 1; }
}
#sidebar-home #sidebar-processing-section {
    margin-top: var(--spacing-md);
}
.sidebar-processing-title {
    font-weight: 500;
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-xs);
}
#sidebar-processing-list {
    list-style: none;
    padding: 0;
    margin: 0;
}
.sidebar-processing-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) 0;
}
.sidebar-processing-item .processing-status-icon {
    flex-shrink: 0;
    width: 20px;
    height: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
}
.sidebar-processing-item .processing-status-icon .spinner {
    width: 16px;
    height: 16px;
    border-width: 2px;
}
.sidebar-processing-item .processing-status-icon .status-glyph {
    display: none;
    font-size: 1.2em;
    font-weight: bold;
    animation: complete-pop 0.3s ease-out;
}
.sidebar-processing-item .processing-info {
    flex-grow: 1;
    min-width: 0;
}
.sidebar-processing-item .filename {
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
    display: block;
}
.sidebar-processing-item .progress-bar-container-sidebar {
    height: 6px;
    background-color: var(--color-background-lvl2);
    border-radius: var(--border-radius-sm);
    overflow: hidden;
    margin-top: var(--spacing-xs);
}
.sidebar-processing-item .progress-bar-fill-sidebar {
    height: 100%;
    width: 0%;
    background-color: var(--color-primary-main);
    border-radius: var(--border-radius-sm);
    transition: width 0.4s ease-in-out;
}
.sidebar-processing-item .progress-percentage-label {
    flex-shrink: 0;
    font-size: 0.8rem;
    color: var(--color-text-tertiary);
    font-weight: 500;
    width: 35px;
    text-align: right;
}

/* State management */
.sidebar-processing-item.is-completed .processing-status-icon .spinner,
.sidebar-processing-item.is-error .processing-status-icon .spinner,
.sidebar-processing-item.is-completed .progress-bar-container-sidebar,
.sidebar-processing-item.is-error .progress-bar-container-sidebar,
.sidebar-processing-item.is-completed .progress-percentage-label,
.sidebar-processing-item.is-error .progress-percentage-label {
    display: none;
}
.sidebar-processing-item.is-completed .processing-status-icon .status-glyph.completed-icon,
.sidebar-processing-item.is-error .processing-status-icon .status-glyph.error-icon {
    display: block;
}
.sidebar-processing-item.is-completed .processing-status-icon .status-glyph.completed-icon {
    color: var(--color-primary-main);
}
.sidebar-processing-item.is-error .processing-status-icon .status-glyph.error-icon {
    color: var(--color-text-error);
}
.sidebar-processing-item.is-processing .processing-status-icon .status-glyph {
    display: none;
}


/* === ANNOTATION TOPIC PICKER === */
.AnnotationTopicPicker {
    position: fixed;
    width: 250px;
    background-color: var(--color-background-surface);
    border: var(--border-width) solid var(--color-border-primary);
    border-radius: var(--border-radius-md);
    box-shadow: var(--shadow-lg);
    z-index: 1002;
    padding: var(--spacing-sm);
    max-height: 320px;
    overflow-y: auto;
}
.AnnotationTopicPicker-header {
    font-size: var(--font-size-md);
    font-weight: 600;
    color: var(--color-text-primary);
    margin-bottom: var(--spacing-sm);
    padding-bottom: var(--spacing-sm);
    border-bottom: var(--border-width) solid var(--color-border-primary);
}
.AnnotationTopicPicker ul { list-style: none; padding: 0; margin: 0; }
.AnnotationTopicPicker li {
    padding: var(--spacing-sm) var(--spacing-md);
    font-size: var(--font-size-sm);
    color: var(--color-text-primary);
    cursor: pointer;
    border-radius: var(--border-radius-sm);
    transition: background-color 0.15s, color 0.15s;
}
.AnnotationTopicPicker li:hover {
    background-color: var(--color-primary-main);
    color: var(--color-text-on-primary);
}

/* === AI WARNING POPUP === */
#ai-warning-popup {
    position: fixed;
    width: auto;
    max-width: 320px;
    background-color: var(--color-background-surface);
    border: var(--border-width) solid var(--color-border-primary);
    border-radius: var(--border-radius-md);
    box-shadow: var(--shadow-lg);
    z-index: 1003;
    padding: var(--spacing-md);
    display: none;
    font-size: var(--font-size-sm);
    line-height: 1.5;
    color: var(--color-text-primary);
    cursor: default;
}
#ai-warning-popup p {
    margin: 0;
    display: inline;
}
#ai-warning-popup button.close-ai-popup {
    display: inline-block;
    margin-left: var(--spacing-sm);
    vertical-align: baseline;
    margin-top: 0;
    padding: calc(var(--spacing-xxs) / 2) var(--spacing-xs);
    font-size: 0.9em;
    background-color: var(--color-background-lvl1);
    border: var(--border-width) solid var(--color-border-primary);
    color: var(--color-text-primary);
    border-radius: var(--border-radius-sm);
    cursor: pointer;
    transition: background-color 0.1s ease-in-out, border-color 0.1s ease-in-out;
}
#ai-warning-popup button.close-ai-popup:hover {
    background-color: var(--color-background-lvl2);
    border-color: var(--color-border-secondary);
}


/* === LOADING SPINNER === */
@keyframes spin { to { transform: rotate(360deg); }}
.spinner {
    border: 4px solid var(--color-background-lvl1);
    border-top-color: var(--color-primary-main);
    border-radius: 50%;
    width: 30px;
    height: 30px;
    animation: spin 0.8s linear infinite;
}
#global-loader .spinner { width: 40px; height: 40px; }
#sidebar-content-area .spinner { width: 24px; height: 24px; margin:10px auto; }

/* === FOCUS VISIBLE STYLES === */
*:focus-visible {
    outline: none;
    box-shadow: var(--shadow-focus-ring);
}
.toolbar-button:focus-visible,
#doc-switcher-container:focus-visible,
#worksheet-dropdown-container:focus-visible,
.thumbnail-container:focus-visible,
.resizer:focus-visible,
.extracts-label:focus-visible, .summary-label:focus-visible, .reasoning-label:focus-visible,
.extract:focus-visible, .concept-summary:focus-visible,
.modal-close-btn:focus-visible,
.AnnotationTopicPicker li:focus-visible,
#ai-warning-popup button.close-ai-popup:focus-visible,
.document-table th[data-sortable="true"]:focus-visible,
.document-table th[data-is-dynamic-concept="true"]:focus-visible,
.document-table td a:focus-visible,
input[type="checkbox"]:focus-visible, input[type="radio"]:focus-visible, select:focus-visible,
.column-list-item:focus-visible,
.global-expansion-zone:focus-visible, .row-expansion-zone:focus-visible {
    box-shadow: var(--shadow-focus-ring);
}

.extract[contenteditable="true"]:focus-visible,
.concept-summary[contenteditable="true"]:focus-visible {
    border-color: var(--color-border-focus);
    box-shadow: var(--shadow-focus-ring);
}

.checkbox-list label:has(input[type="checkbox"]:focus-visible),
.form-inline-label:has(input:focus-visible) {
    background-color: rgba(0,122,255,0.1);
    border-radius: var(--border-radius-sm);
    box-shadow: none;
}
#modal-worksheet-select:focus-visible,
#reprocess-modal-worksheet-select:focus-visible,
.modal-body input[type="text"]:focus-visible,
.modal-body input[type="number"]:focus-visible,
.modal-body select:focus-visible {
    border-color: var(--color-border-focus);
    box-shadow: var(--shadow-focus-ring);
}
.header-conf-icon-item:focus-visible {
    outline: none;
    background-color: var(--color-background-interactive);
    box-shadow: var(--shadow-focus-ring);
}

/* === HOMEPAGE DOCUMENT TABLE STYLES === */
#document-list-container {
    width: 100%;
    position: relative;
    flex-grow: 1;
    overflow: auto;
}
#document-list-container.is-loading::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0; bottom: 0;
    background-color: rgba(248, 249, 250, 0.7);
    z-index: 20;
    border-radius: var(--border-radius-lg);
}
#document-list-container.is-loading::after {
    content: '';
    position: absolute;
    top: 40%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 40px;
    height: 40px;
    border: 4px solid var(--color-primary-light);
    border-top-color: var(--color-primary-main);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
    z-index: 21;
}

.document-table {
    width: 100%;
    border-collapse: collapse;
    font-size: var(--font-size-sm);
    table-layout: fixed;
}
.document-table th, .document-table td {
    padding: var(--spacing-md);
    text-align: left;
    border-bottom: var(--border-width) solid var(--color-border-primary);
    vertical-align: middle;
    overflow: hidden;
    white-space: nowrap;
}
.document-table td {
    white-space: normal;
}
.document-table thead th {
    background-color: var(--color-background-lvl1);
    font-weight: 600;
    color: var(--color-text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    position: sticky;
    top: 0;
    z-index: 10;
}
.document-table thead {
    padding-right: var(--scrollbar-width, 15px);
}
.document-table thead th[data-sortable="true"],
.document-table thead th[data-is-dynamic-concept="true"] {
    cursor: pointer;
}
.document-table th .sort-arrow {
    display: inline-block;
    width: 0;
    height: 0;
    margin-left: 5px;
    vertical-align: middle;
    border-left: 4px solid transparent;
    border-right: 4px solid transparent;
    opacity: 0.4;
    transition: opacity 0.15s ease-in-out, border-color 0.15s ease-in-out;
}
.document-table th .sort-arrow.sort-asc {
    border-bottom: 5px solid var(--color-text-tertiary);
    border-top: none;
}
.document-table th .sort-arrow.sort-desc {
    border-top: 5px solid var(--color-text-tertiary);
    border-bottom: none;
}
.document-table th[data-sortable="true"]:hover .sort-arrow {
    opacity: 0.8;
}
.document-table th[data-sortable="true"] .sort-arrow.sort-asc,
.document-table th[data-sortable="true"] .sort-arrow.sort-desc {
    opacity: 1;
}
.document-table th[data-sortable="true"]:hover .sort-arrow.sort-asc,
.document-table th[data-sortable="true"] .sort-arrow.sort-asc {
    border-bottom-color: var(--color-primary-main);
}
.document-table th[data-sortable="true"]:hover .sort-arrow.sort-desc,
.document-table th[data-sortable="true"] .sort-arrow.sort-desc {
    border-top-color: var(--color-primary-main);
}


.document-table td a {
    text-decoration: none;
    color: var(--color-text-link);
    font-weight: 500;
}
.document-table td a:hover {
    text-decoration: underline;
    color: var(--color-primary-dark);
}
.document-table .date-na {
    color: var(--color-text-tertiary);
    font-style: italic;
}

.summary-cell {
    word-break: break-word;
    min-width: 100px;
    vertical-align: top;
    padding-right: var(--spacing-md) !important;
    cursor: pointer;
    position: relative;
}
.summary-cell .summary-text-container {
    white-space: pre-wrap;
    word-break: break-word;
}
.document-table tr.state-collapsed .summary-text-container,
.document-table tr.state-collapsed .filename-cell-container a,
.document-table tr.state-collapsed .cell-content-wrapper {
    display: block;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}
.document-table tr.state-collapsed td {
    padding-top: var(--spacing-sm);
    padding-bottom: var(--spacing-sm);
    vertical-align: middle;
}
.document-table tr.state-collapsed .filename-cell-container {
    min-height: auto;
}

.summary-cell .inline-extracts-list {
    margin-top: var(--spacing-sm);
}
.summary-cell .inline-extracts-list ul {
    list-style-type: disc;
    padding-left: var(--spacing-lg);
    margin: 0;
}
.summary-cell .inline-extracts-list li {
    margin-bottom: var(--spacing-xs);
    font-size: 0.9em;
}
.summary-cell .inline-extracts-list li a {
    color: var(--color-text-link);
    text-decoration: none;
}
.summary-cell .inline-extracts-list li a:hover {
    text-decoration: underline;
}
.summary-cell .no-inline-extracts {
    font-style: italic;
    color: var(--color-text-tertiary);
    font-size: 0.9em;
}

.document-table td.summary-content-cell {
    vertical-align: top;
    cursor: pointer;
}
.document-table td.extracts-content-cell {
    vertical-align: top;
    border-top: 1px dashed var(--color-border-secondary);
    padding-top: var(--spacing-sm);
}
.document-table td[rowspan="2"] {
    vertical-align: top;
}
.document-table tr.extracts-row[style*="visibility: collapse"] td {
    padding-top: 0;
    padding-bottom: 0;
    border-bottom-width: 0;
    font-size: 0;
    line-height: 0;
}

.document-table th.filler-column,
.document-table td.filler-column {
    width: 100%;
    padding: 0;
    border: none;
}



@keyframes subtleHighlight {
    0% {
        background-color: var(--color-primary-light);
    }
    70% {
        background-color: var(--color-primary-light);
    }
    100% {
        background-color: transparent;
    }
}
.document-table tbody tr.newly-processed-highlight td:not(.row-number-column) {
    animation: subtleHighlight 2.5s ease-out forwards;
}

.document-table tbody tr.summary-row.is-hovered,
.document-table tbody tr.summary-row.is-hovered + tr.extracts-row {
    background-color: var(--color-background-lvl2);
}
.document-table tbody tr.summary-row.is-hovered td,
.document-table tbody tr.summary-row.is-hovered + tr.extracts-row td {
    background-color: var(--color-background-lvl2);
}

.document-table tbody tr.summary-row.is-focused,
.document-table tbody tr.summary-row.is-focused + tr.extracts-row {
    background-color: var(--color-primary-light);
}
.document-table tbody tr.summary-row.is-focused td,
.document-table tbody tr.summary-row.is-focused + tr.extracts-row td {
    background-color: var(--color-primary-light);
}


.filename-cell-container {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
    justify-content: center;
}
.filename-cell-container a {
    white-space: normal;
    word-break: break-word;
}

.avatar-row {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: var(--spacing-xs);
    min-height: 28px;
}

.user-avatar {
    position: relative;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 24px;
    height: 24px;
    border-radius: 50%;
    font-size: 0.75rem;
    font-weight: 600;
    color: white;
    text-transform: uppercase;
    transition: transform 0.15s ease-in-out, box-shadow 0.15s ease-in-out;
    margin: 3px;
    flex-shrink: 0;
    border: 2px solid transparent;
}
.user-avatar:hover {
    transform: scale(1.1);
}
.user-avatar.avatar-reviewed {
    box-shadow: 0 0 0 2px var(--color-background-surface), 0 0 0 4px var(--color-text-success);
}

.custom-tooltip {
    position: fixed;
    display: none;
    padding: var(--spacing-xs) var(--spacing-md);
    background-color: var(--color-secondary-dark);
    color: var(--color-text-on-dark);
    border-radius: var(--border-radius-md);
    font-size: var(--font-size-sm);
    font-weight: 500;
    z-index: 9999;
    pointer-events: none; /* The tooltip itself should not be interactive */
    white-space: nowrap;
}


/* === HOMEPAGE SIDEBAR ACTION BUTTONS === */
.toolbar-button.full-width-button {
    display: block;
    width: 100%;
    text-align: left;
    margin-bottom: var(--spacing-sm);
    padding-left: var(--spacing-md);
    padding-right: var(--spacing-md);
}
.toolbar-button.full-width-button .icon {
    margin-right: var(--spacing-sm);
    width: 1.2em;
    text-align: center;
    display: inline-block;
    vertical-align: middle;
}
.toolbar-button.full-width-button .icon.spin {
    animation: spin 1.5s linear infinite;
}

/* Quick Statistics Progress Bar (Homepage Sidebar) */
.stats-panel p {
    font-size: var(--font-size-sm);
    color: var(--color-text-primary);
    margin-bottom: var(--spacing-xs);
}
.stats-panel p strong {
    font-weight: 600;
    color: var(--color-text-secondary);
}
.stats-panel .stat-group-separator {
    margin-top: var(--spacing-md);
}
.stats-panel .progress-bar-container {
    width: 100%;
    background-color: var(--color-background-lvl2);
    border-radius: var(--border-radius-sm);
    height: 10px;
    overflow: hidden;
    margin-top: var(--spacing-xs);
    border: 1px solid var(--color-border-primary);
}
.stats-panel .progress-bar-fill {
    height: 100%;
    width: 0%;
    transition: width 0.5s ease-in-out;
    border-radius: var(--border-radius-sm);
}
.stats-panel .progress-bar-fill.reviewed {
    background-color: var(--color-primary-main);
}
.stats-panel .progress-bar-fill.assigned {
    background-color: var(--color-text-warning);
}
.stats-panel .percentage-label {
    text-align: right;
    font-size: var(--font-size-sm);
    color: var(--color-text-tertiary);
    margin-top: var(--spacing-xxs);
}

#sidebar-home .sidebar-section:first-child > .sidebar-section-content {
    padding-top: var(--spacing-sm);
}
#sidebar-home .project-meta p {
    margin-top: 0;
}


/* === UPLOAD PROGRESS STYLES === */
.status-message {
    margin-top: var(--spacing-md); padding: var(--spacing-md);
    border-radius: var(--border-radius-md); font-size: var(--font-size-sm);
    border: var(--border-width) solid transparent;
}
.status-message.success {
    background-color: rgba(25,135,84,0.1);
    color: var(--color-text-success);
    border-color:     rgba(25,135,84,0.3);
}
.status-message.error {
    background-color: rgba(220,53,69,0.1);
    color: var(--color-text-error);
    border-color:     rgba(220,53,69,0.3);
}
.status-message.info { background-color: var(--color-primary-light); color: var(--color-primary-dark); border-color: var(--color-primary-main); }

/* Styles for column resizing handles */
.document-table th.resizable-column .resize-handle {
    position: absolute;
    top: 0;
    right: -6px;
    width: 12px;
    height: 100%;
    cursor: col-resize;
    z-index: 15;
}
.document-table th.resizable-column .resize-handle::before {
    content: '';
    position: absolute;
    top: 25%;
    left: 50%;
    transform: translateX(-50%);
    width: 2px;
    height: 50%;
    background-color: transparent;
    transition: background-color 0.15s ease-in-out;
    border-radius: 1px;
}
.document-table th.resizable-column:hover .resize-handle::before {
    background-color: var(--color-primary-main);
}
body.col-resizing .resize-handle::before {
    background-color: var(--color-primary-main);
}
.document-table th.merged-select-expand-column .resize-handle {
    display: none !important;
}


/* Style for hidden columns */
.column-hidden {
    display: none !important;
}


/* === HOMEPAGE SIDEBAR & TOGGLE === */
#sidebar-home {
    flex-shrink: 0;
    flex-basis: var(--sidebar-home-width);
    background-color: var(--color-background-lvl1);
    padding: var(--spacing-xl);
    border-right: var(--border-width) solid var(--color-border-primary);
    overflow-y: auto;
    height: 100%;
    position: relative;
    transition: flex-basis 0.3s ease-in-out, padding 0.3s ease-in-out;
    overflow-x: hidden;
    white-space: nowrap;
}
body:not(.sidebar-home-collapsed) #sidebar-home {
    cursor: pointer;
}
body.sidebar-home-collapsed #sidebar-home {
    flex-basis: var(--sidebar-home-width-collapsed);
    padding-left: 0;
    padding-right: 0;
    overflow: hidden;
    cursor: pointer;
}
.toolbar-button.icon-button {
    padding: var(--spacing-sm);
    width: 36px;
    height: 36px;
}
#sidebar-collapse-toggle {
    position: absolute;
    bottom: var(--spacing-md);
    left: var(--sidebar-home-width);
    transform: translateX(-50%);
    z-index: 50;
    border-radius: 50%;
    width: 28px;
    height: 28px;
    padding: 0;
    background-color: var(--color-background-surface);
    border: 1px solid var(--color-border-primary);
    box-shadow: var(--shadow-sm);
    transition: left 0.3s ease-in-out, transform 0.3s ease-in-out, background-color 0.15s ease-in-out;
}
body.sidebar-home-collapsed #sidebar-collapse-toggle {
    left: var(--sidebar-home-width-collapsed);
}
#sidebar-collapse-toggle:hover {
    background-color: var(--color-background-interactive);
    border-color: var(--color-primary-main);
}
#sidebar-collapse-toggle svg {
    transition: transform 0.2s ease-in-out;
}
body.sidebar-home-collapsed #sidebar-collapse-toggle svg {
    transform: rotate(180deg);
}
.sidebar-section-icon {
    margin-right: var(--spacing-md);
    color: var(--color-icon-secondary);
}
body.sidebar-home-collapsed .sidebar-section-header {
    justify-content: center;
}
body.sidebar-home-collapsed .sidebar-section-icon {
    margin-right: 0;
}
body.sidebar-home-collapsed .sidebar-section-header .chevron {
    display: none !important;
}

body.sidebar-home-collapsed .sidebar-section-title,
body.sidebar-home-collapsed .sidebar-section-content {
    display: none;
}
.sidebar-subsection:first-child {
    margin-top: 0;
    padding-top: 0;
    border-top: none;
}
#content-pane-home {
    flex-grow: 1;
    background-color: var(--color-background-body);
    height: 100%;
    min-width: 0;
    display: flex;
    flex-direction: column;
    padding: var(--spacing-xl);
}

/* Filter Bar Styling */
#document-filter-bar {
    display: flex;
    gap: var(--spacing-md);
    align-items: flex-end;
    flex-wrap: wrap;
}
#document-filter-bar > div {
    margin-bottom: var(--spacing-sm);
}
#document-filter-bar label {
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
    display: block;
    margin-bottom: var(--spacing-xs);
    font-weight: 500;
}
#document-filter-bar input[type="text"],
#document-filter-bar select {
    width: 100%;
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--border-radius-sm);
    border: 1px solid var(--color-border-input);
    font-size: var(--font-size-sm);
    box-sizing: border-box;
    height: calc(2 * var(--spacing-sm) + 2 * var(--spacing-xs) + var(--font-size-sm) * var(--line-height-normal));
}
#document-filter-bar input[type="text"] {
    min-width: 200px;
}
#document-filter-bar .toolbar-button {
    padding: var(--spacing-xs) var(--spacing-md);
    height: calc(2 * var(--spacing-sm) + 2 * var(--spacing-xs) + var(--font-size-sm) * var(--line-height-normal));
    align-self: flex-end;
}
.filter-text-search-group {
    display: flex;
    align-items: flex-end;
    gap: var(--spacing-sm);
    flex-grow: 1;
}
.filter-text-search-group .filter-input-group {
    flex-grow: 1;
}
.filter-text-search-group .filter-input-group label {
    margin-bottom: var(--spacing-xs);
}
.filter-text-search-group .filter-input-group input[type="text"] {
    width: 100%;
}


#worksheet-editor-concepts-checklist label.dragging { opacity: 0.5; background-color: var(--color-primary-light); }
#worksheet-editor-concepts-checklist label.drag-over-top { border-top: 2px dashed var(--color-primary-main) !important; }
#worksheet-editor-concepts-checklist label.drag-over-bottom { border-bottom: 2px dashed var(--color-primary-main) !important; }

/* REPROCESSING INDICATORS */
.document-table .reprocessing-indicator {
    display: inline-block;
    width: 16px;
    height: 16px;
    border-radius: 50%;
    border: 2px solid var(--color-primary-main);
    border-top-color: transparent;
    animation: spin 1s linear infinite;
    margin-left: var(--spacing-xs);
    vertical-align: middle;
}
.document-table .reprocessing-indicator.error {
    animation: none;
    border: none;
    color: var(--color-text-error);
    font-weight: bold;
    font-size: 1.2em;
}
.document-table .reprocessing-indicator.error::before {
    content: '⚠';
}
.document-table .reprocessing-complete-indicator {
    display: inline-block;
    color: var(--color-text-success);
    font-weight: bold;
    font-size: 1.2em;
    margin-left: var(--spacing-xs);
    vertical-align: middle;
}
.document-table tr.reprocessing-full td,
.document-table td.reprocessing-partial {
    opacity: 0.5;
    pointer-events: none;
    background-color: var(--color-background-lvl2) !important;
}
.document-table tr.reprocessing-full input[type="checkbox"] {
    visibility: hidden;
}
.document-table td.reprocessing-partial .summary-text-container,
.document-table td.reprocessing-partial .inline-extracts-list {
    display: none !important;
}
.document-table td.reprocessing-partial .reprocessing-indicator-cell-content {
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.8em;
    color: var(--color-text-tertiary);
    height: 100%;
    padding: var(--spacing-xs) 0;
}
.document-table td.reprocessing-partial .reprocessing-indicator-cell-content .reprocessing-indicator {
    margin-left: 0;
    margin-right: var(--spacing-xs);
}
.document-table td.reprocessing-failed {
    background-color: rgba(220,53,69,0.05) !important;
    opacity: 1;
    pointer-events: auto;
}
.document-table td.reprocessing-failed .reprocessing-indicator-cell-content {
    color: var(--color-text-error);
}
.document-table td.reprocessing-failed .reprocessing-indicator-cell-content .retry-reprocess-btn {
    margin-left: var(--spacing-sm);
    font-size: 0.9em;
    padding: 2px 6px;
    background-color: var(--color-background-surface);
    border-color: var(--color-text-error);
    color: var(--color-text-error);
    pointer-events: all;
}
.document-table td.reprocessing-failed .reprocessing-indicator-cell-content .retry-reprocess-btn:hover {
    background-color: rgba(220,53,69,0.1);
}


#overwrite-details-list ul {
    list-style-type: disc;
    padding-left: var(--spacing-lg);
    margin: 0;
}
#overwrite-details-list li {
    margin-bottom: var(--spacing-xs);
}

.document-table tbody tr.just-completed td {
    animation: subtleHighlight 2.0s ease-out forwards;
}

/* Custom Multi-Select Filter Styles */
.multi-select-filter-container {
    position: relative;
    min-width: 150px;
}
.multi-select-filter-container.open {
    z-index: 105;
}
.multi-select-btn {
    width: 100%;
    text-align: left;
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--border-radius-sm);
    border: 1px solid var(--color-border-input);
    background-color: var(--color-background-surface);
    font-size: var(--font-size-sm);
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: calc(2 * var(--spacing-sm) + 2 * var(--spacing-xs) + var(--font-size-sm) * var(--line-height-normal));
    box-sizing: border-box;
    transition: background-color 0.15s ease-in-out, border-color 0.15s ease-in-out, color 0.15s ease-in-out;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}
.multi-select-btn::after {
    content: '▼';
    font-size: 0.6em;
    color: var(--color-text-tertiary);
    transition: transform 0.2s ease-in-out;
    margin-left: var(--spacing-xs);
    flex-shrink: 0;
}
.multi-select-filter-container.open .multi-select-btn::after {
    transform: rotate(180deg);
}
.multi-select-dropdown {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    width: 100%;
    min-width: 220px;
    background-color: var(--color-background-surface);
    border: 1px solid var(--color-border-primary);
    border-radius: var(--border-radius-md);
    box-shadow: var(--shadow-md);
    z-index: 110;
}
.multi-select-filter-container.open .multi-select-dropdown {
    display: block;
}
.multi-select-options {
    max-height: 200px;
    overflow-y: auto;
    padding: var(--spacing-sm);
}
.multi-select-options .user-filter-item {
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--border-radius-sm);
    cursor: pointer;
    transition: background-color 0.1s ease-in-out, color 0.1s ease-in-out, font-weight 0.1s ease-in-out;
    font-weight: normal;
    color: var(--color-text-primary);
}
.multi-select-options .user-filter-item:hover {
    background-color: var(--color-background-lvl1);
}
.multi-select-options .user-filter-item.state-include {
    background-color: #b8d9ff;
    color: var(--color-primary-dark);
    font-weight: 500;
}
.multi-select-options .user-filter-item.state-include:hover {
    background-color: #b8d9ff;
}
.multi-select-options .user-filter-item.state-exclude {
    background-color: rgba(220, 53, 69, 0.1); /* --color-text-error is #dc3545 */
    color: var(--color-text-error);
    font-weight: 500;
}
.multi-select-options .user-filter-item.state-exclude:hover {
    background-color: rgba(220, 53, 69, 0.2);
}

.multi-select-logic-toggle {
    padding: var(--spacing-sm);
    border-top: 1px solid var(--color-border-primary);
    background-color: var(--color-background-lvl1);
    display: none;
    justify-content: space-around;
    font-size: 0.9em;
}
.multi-select-logic-toggle label {
    cursor: pointer;
}
.multi-select-logic-toggle input {
    margin-right: var(--spacing-xs);
}

/* Search term highlighting */
mark {
    background-color: #fff3cd;
    color: #664d03;
    padding: 0.1em 0.2em;
    border-radius: var(--border-radius-sm);
    font-weight: 500;
}

.user-id-tag.clickable-user-filter {
    cursor: pointer;
    transition: background-color 0.15s ease-in-out, color 0.15s ease-in-out, text-decoration 0.15s ease-in-out;
}
.user-id-tag.clickable-user-filter:hover {
    background-color: var(--color-primary-light);
    color: var(--color-primary-dark);
    text-decoration: underline;
}

/* Filter Pill Styles */
.filter-pill {
    background-color: var(--color-primary-light);
    color: var(--color-primary-dark);
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--border-radius-lg);
    font-size: var(--font-size-sm);
    display: inline-flex;
    align-items: flex-start;
    margin: var(--spacing-xxs);
    cursor: pointer;
    transition: background-color 0.15s ease-in-out, color 0.15s ease-in-out, border-color 0.15s ease-in-out;
    border: 1px solid transparent;
    max-width: 100%;
}
.filter-pill.pill-negated {
    background-color: rgba(220, 53, 69, 0.15);
    color: var(--color-text-error);
    border: none;
}
.filter-pill:hover {
    opacity: 0.8;
}
.filter-pill .pill-text {
    white-space: normal;
    word-break: break-word;
}
.filter-pill .clear-pill-btn {
    background: none;
    border: none;
    color: inherit;
    font-size: 1.1em;
    line-height: 1;
    padding: 0 var(--spacing-xxs);
    margin-left: var(--spacing-xs);
    cursor: pointer;
    opacity: 0.7;
    align-self: flex-start;
}
.filter-pill .clear-pill-btn:hover {
    opacity: 1;
}
.filter-pill .pill-show-more-btn {
    display: none;
}

.filter-connector {
    font-size: calc(var(--font-size-sm) * 0.85);
    color: var(--color-text-tertiary);
    font-weight: 400;
    padding: var(--spacing-xxs) var(--spacing-xs);
    border-radius: var(--border-radius-md);
    background-color: transparent;
    cursor: pointer;
    transition: background-color 0.15s ease-in-out, color 0.15s ease-in-out;
    align-self: center;
    border: 1px solid var(--color-border-primary);
}
.filter-connector:hover {
    background-color: var(--color-background-lvl1);
    color: var(--color-text-secondary);
    border-color: var(--color-border-secondary);
}

.multi-select-btn.filter-active-positive {
    background-color: var(--color-primary-light);
    border-color: var(--color-primary-main);
    color: var(--color-primary-dark);
}
.multi-select-btn.filter-active-positive:hover {
    background-color: var(--color-primary-light);
}

.multi-select-btn.filter-active-negative {
    background-color: rgba(220,53,69,0.1);
    border-color:     var(--color-text-error);
    color: var(--color-text-error);
}
.multi-select-btn.filter-active-negative:hover {
    background-color: rgba(220,53,69,0.2);
}

.multi-select-btn.filter-active-mixed {
    background-color: var(--color-background-lvl2);
    border-color: var(--color-border-secondary);
    color: var(--color-text-primary);
}
.multi-select-btn.filter-active-mixed:hover {
    background-color: var(--color-background-interactive-hover);
}

.user-assignment-list {
    height: 300px;
    overflow-y: auto;
    border: 1px solid var(--color-border-secondary);
    border-radius: var(--border-radius-sm);
    padding: var(--spacing-sm);
    margin-top: var(--spacing-md);
    display: flex;
    flex-direction: column;
}
.user-assignment-list-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-sm) 0;
    border-bottom: 1px solid var(--color-border-primary);
}
.user-assignment-list-item:last-child {
    border-bottom: none;
}
.user-assignment-list-item .username {
    flex-grow: 1;
    margin-right: var(--spacing-md);
    color: var(--color-text-primary);
}
.user-assignment-list-item .action-button {
    padding: var(--spacing-xs) var(--spacing-sm);
    font-size: 0.9em;
    margin-left: var(--spacing-sm);
}
.user-assignment-list-item .action-button.unassign-btn {
    background-color: var(--color-text-warning);
    border-color: var(--color-text-warning);
    color: var(--color-warning-yellow-text-darker);
}
.user-assignment-list-item .action-button.unassign-btn:hover {
    background-color: #e0ad06;
    border-color:     #e0ad06;
}

.team-member-item .presence-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background-color: var(--color-text-tertiary);
    opacity: 0.5;
    transition: background-color 0.3s ease-in-out, opacity 0.3s ease-in-out;
    flex-shrink: 0;
}
.team-member-item .presence-dot.online {
    background-color: var(--color-text-success);
    opacity: 1;
}

/* === USER MENU (TOP RIGHT) === */
.user-menu-container {
    position: relative;
    margin-left: var(--spacing-sm);
}
.user-avatar-button {
    cursor: pointer;
    width: 36px;
    height: 36px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: box-shadow 0.15s ease-in-out;
    border: 2px solid transparent;
}
.user-avatar-button:hover,
.user-avatar-button:focus-visible {
    box-shadow: var(--shadow-focus-ring);
    border-color: var(--color-primary-main);
}
.user-menu-dropdown {
    display: none;
    position: absolute;
    top: calc(100% + var(--spacing-sm));
    right: 0;
    background-color: var(--color-background-surface);
    border: 1px solid var(--color-border-primary);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-lg);
    z-index: 101;
    min-width: 220px;
    padding-top: var(--spacing-sm);
    padding-bottom: var(--spacing-sm);
}
.user-menu-container.open .user-menu-dropdown {
    display: block;
}
.user-menu-header {
    padding: var(--spacing-sm) var(--spacing-lg);
    border-bottom: 1px solid var(--color-border-primary);
    margin-bottom: var(--spacing-sm);
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
}
.user-menu-header strong {
    color: var(--color-text-primary);
    font-weight: 600;
}
.user-menu-dropdown ul {
    list-style: none;
    padding: 0;
    margin: 0;
}
.user-menu-dropdown a {
    display: block;
    padding: var(--spacing-sm) var(--spacing-lg);
    color: var(--color-text-primary);
    text-decoration: none;
    font-size: var(--font-size-sm);
    transition: background-color 0.1s ease-in-out;
}
.user-menu-dropdown a:hover,
.user-menu-dropdown a:focus-visible {
    background-color: var(--color-background-interactive);
    color: var(--color-primary-dark);
    outline: none;
}

/* === EXPANSION CONTROLS === */
.expansion-icon {
    display: inline-block;
    width: 0.5em;
    height: 0.5em;
    border-right: 0.15em solid var(--color-text-secondary);
    border-bottom: 0.15em solid var(--color-text-secondary);
    transition: transform 0.2s ease-in-out;
    flex-shrink: 0;
}
.global-expansion-zone:hover .expansion-icon,
.row-expansion-zone:hover .expansion-icon {
    border-color: var(--color-primary-main);
}

th.global-state-collapsed .global-expansion-icon,
tr.state-collapsed .row-expansion-icon { transform: rotate(-45deg); } /* RIGHT */

th.global-state-abbreviated .global-expansion-icon,
tr.state-abbreviated .row-expansion-icon { transform: rotate(45deg); } /* DOWN */

th.global-state-full .global-expansion-icon,
tr.state-full .row-expansion-icon { transform: rotate(-135deg); } /* UP */


/* === SEARCH SCOPE PANEL === */
#search-scope-panel {
    border-top: 1px solid var(--color-border-primary);
    background-color: var(--color-background-surface);
    display: flex;
    flex-direction: column;
    max-height: 500px;
    transition: all 0.3s ease-in-out;
}
#filter-container.collapsed > #search-scope-panel {
    max-height: 0;
    padding-top: 0;
    padding-bottom: 0;
    border-top-color: transparent;
    overflow: hidden;
}
#search-scope-panel .panel-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-sm) var(--spacing-lg);
    background-color: var(--color-background-lvl1);
    border-bottom: 1px solid var(--color-border-primary);
}
#search-scope-panel .panel-header h5 {
    margin: 0;
    font-size: var(--font-size-sm);
    font-weight: 600;
    color: var(--color-text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}
#search-scope-panel .close-panel-btn {
    background: none;
    border: none;
    font-size: 1.5rem;
    color: var(--color-text-tertiary);
    cursor: pointer;
    line-height: 1;
    padding: 0 var(--spacing-xs);
}
#search-scope-panel .close-panel-btn:hover {
    color: var(--color-text-primary);
}
#search-scope-panel .panel-body {
    padding: var(--spacing-lg);
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}
#search-scope-panel .panel-footer {
    padding: var(--spacing-md) var(--spacing-lg);
    text-align: right;
    border-top: 1px solid var(--color-border-primary);
    background-color: var(--color-background-lvl1);
}
#search-scope-panel .panel-footer .toolbar-button {
    background-color: var(--color-primary-main);
    border-color: var(--color-primary-main);
    color: var(--color-text-on-primary);
}
#search-scope-panel .panel-footer .toolbar-button:hover {
    background-color: var(--color-primary-dark);
    border-color: var(--color-primary-dark);
}
.search-target-group {
    border: none;
    padding: 0;
    margin: 0;
}
.search-target-group legend {
    font-weight: 600;
    font-size: var(--font-size-sm);
    padding-bottom: var(--spacing-sm);
    margin-bottom: var(--spacing-sm);
    width: 100%;
    border-bottom: 1px solid var(--color-border-primary);
}
.global-targets {
    display: flex;
    gap: var(--spacing-xl);
    align-items: center;
    flex-wrap: wrap;
}
.concept-scope-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    gap: var(--spacing-lg) var(--spacing-xl);
}
.concept-scope-block {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
}
.target-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}
.target-item label {
    font-size: var(--font-size-sm);
    color: var(--color-text-primary);
    cursor: pointer;
}
.target-item input[type="checkbox"] {
    cursor: pointer;
    width: 16px;
    height: 16px;
}
.concept-parent label {
    font-weight: 600;
}
.concept-child {
    padding-left: var(--spacing-xl);
}
input[type="checkbox"]:indeterminate {
    background-color: var(--color-primary-main);
    border-color: var(--color-primary-main);
    background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16'%3e%3cpath fill='none' stroke='%23fff' stroke-linecap='round' stroke-linejoin='round' stroke-width='2' d='M2 8h12'/%3e%3c/svg%3e");
    background-position: center;
    background-repeat: no-repeat;
}

/* === Inline Summary Edit Styles (Homepage) === */
.document-table td.summary-cell {
    position: relative;
}

.summary-cell .edit-summary-icon {
    position: absolute;
    top: 4px;
    right: 4px;
    width: 24px;
    height: 24px;
    border-radius: var(--border-radius-sm);
    background-color: rgba(255, 255, 255, 0.8);
    border: 1px solid var(--color-border-secondary);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: opacity 0.15s ease-in-out, background-color 0.15s ease-in-out;
    z-index: 5;
}

.document-table tr.state-collapsed .edit-summary-icon {
    display: none;
}

.document-table td.summary-cell:hover .edit-summary-icon {
    opacity: 1;
}

.document-table td.summary-cell.is-editing:hover .edit-summary-icon {
    display: none;
}

.summary-cell .edit-summary-icon:hover {
    background-color: var(--color-background-interactive);
}

.summary-cell .edit-summary-icon svg {
    width: 16px;
    height: 16px;
    color: var(--color-text-secondary);
}

.document-table td.summary-cell.is-editing {
    background-color: var(--color-background-lvl1);
    outline: none;
    box-shadow: inset 0 0 0 2px var(--color-primary-main);
}

.document-table td.summary-cell.is-editing .summary-text-container {
    min-height: 5em;
}

/* Active Save Button Style */
.toolbar-button.save-button-active {
    background-color: var(--color-primary-main) !important;
    border-color: var(--color-primary-main) !important;
    color: var(--color-text-on-primary) !important;
    font-weight: 600;
}
.toolbar-button.save-button-active:hover {
    background-color: var(--color-primary-dark) !important;
    border-color: var(--color-primary-dark) !important;
}

/* Danger Button Style */
.toolbar-button.btn-danger {
    background-color: var(--color-text-error);
    border-color: var(--color-text-error);
    color: var(--color-text-on-primary);
}
.toolbar-button.btn-danger:hover {
    background-color: #b02a37;
    border-color: #b02a37;
    color: var(--color-text-on-primary);
}

.toolbar-button.btn-success {
    background-color: var(--color-text-success);
    border-color: var(--color-text-success);
    color: var(--color-text-on-primary);
}
.toolbar-button.btn-success:hover {
    background-color: #16794b; /* Darker green */
    border-color: #16794b;
}

#delete-worksheet-btn:not(:disabled):hover {
    background-color: rgba(220,53,69,0.1);
    border-color: var(--color-text-error);
    color: var(--color-text-error);
}

/* === MODAL-SPECIFIC OVERRIDES & REFACTORED STYLES === */
.modal-content--narrow { max-width: 500px; }
.modal-content--medium { max-width: 600px; }
.modal-content--wide { max-width: 700px; }
.modal-content--extra-wide { max-width: 800px; }
.modal-content--tall { min-height: 70vh; }

.overwrite-details-list {
    max-height: 150px;
    overflow-y: auto;
    border: 1px solid var(--color-border-primary);
    padding: var(--spacing-sm);
    margin-bottom: var(--spacing-lg);
    font-size: var(--font-size-sm);
}
.reprocess-doc-count {
    margin-bottom: var(--spacing-md);
    font-weight: 500;
}
.batch-assign-confirmation-text {
    margin-top: var(--spacing-lg);
    padding: var(--spacing-md);
    background-color: var(--color-background-lvl1);
    border-radius: var(--border-radius-md);
    min-height: 2em;
    text-align: center;
    font-weight: 500;
}
.form-inline-actions {
    display: flex;
    gap: var(--spacing-md);
    align-items: flex-end;
    flex-wrap: wrap;
}
.form-group-flex-grow {
    flex-grow: 1;
    margin-bottom: 0;
    min-width: 150px;
}
.form-action-button {
    padding-top: var(--spacing-sm);
    padding-bottom: var(--spacing-sm);
    margin-bottom: 0;
}
.section-divider {
    margin: var(--spacing-xl) 0;
}
.tab-content-padded {
    padding: var(--spacing-xl);
}
.status-message-admin {
    margin-top: var(--spacing-md);
}

#upload-modal .modal-content {
    max-width: 650px;
    min-height: 400px;
}
#reprocess-options-modal .modal-content,
#viewer-reprocess-options-modal .modal-content {
    max-width: 700px;
}
#overwrite-warning-modal .modal-content,
#viewer-overwrite-warning-modal .modal-content,
#create-worksheet-modal .modal-content {
    max-width: 600px;
}
#batch-assign-modal .modal-content,
#add-concept-modal .modal-content,
#unsaved-changes-modal .modal-content,
#delete-worksheet-modal .modal-content {
    max-width: 500px;
}

.modal-header.header-warning {
    background-color: var(--color-text-warning);
    color: var(--color-warning-yellow-text-darker);
}
.modal-header.header-warning h2,
.modal-header.header-warning .modal-close-btn {
    color: var(--color-warning-yellow-text-darker);
}

.click-to-browse {
    color: var(--color-primary-main);
    text-decoration: underline;
}

#modal-upload-status-message {
    margin-top: auto;
}

#cancel-reprocess-btn,
#viewer-cancel-reprocess-btn,
#proceed-without-saving-btn {
    background-color: var(--color-secondary-main);
    border-color: var(--color-secondary-main);
}
#confirm-overwrite-reprocess-btn,
#viewer-confirm-overwrite-reprocess-btn {
    background-color: var(--color-text-error);
    border-color: var(--color-text-error);
}
#cancel-batch-assign-btn-footer {
    background-color: transparent;
    border-color: var(--color-border-secondary);
    color: var(--color-text-secondary);
}

/* NEW: Sidebar Nav Link */
.sidebar-nav-link {
    display: flex;
    align-items: center;
    padding: var(--spacing-sm) var(--spacing-md);
    margin: 0 var(--spacing-sm) var(--spacing-xs);
    border-radius: var(--border-radius-md);
    text-decoration: none;
    color: var(--color-text-secondary);
    font-weight: 500;
    transition: background-color 0.15s ease-in-out, color 0.15s ease-in-out;
}
.sidebar-nav-link:hover {
    background-color: var(--color-background-interactive);
    color: var(--color-primary-dark);
}
.sidebar-nav-link svg {
    margin-right: var(--spacing-sm);
    flex-shrink: 0;
}

/* NEW: Concept Type Badge */
.concept-type-badge {
    font-size: 0.75rem;
    font-weight: 600;
    padding: 2px 6px;
    border-radius: var(--border-radius-lg);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}
.concept-type-badge.type-llm_extraction {
    background-color: var(--color-primary-light);
    color: var(--color-primary-dark);
}
.concept-type-badge.type-notes_only {
    background-color: var(--color-background-lvl2);
    color: var(--color-text-secondary);
}

/* NEW: Refine with AI button style */
#refine-with-ai-btn {
    background-color: transparent;
    border: 1px solid var(--color-primary-main);
    color: var(--color-primary-main);
    font-weight: 500;
}
#refine-with-ai-btn:hover {
    background-color: var(--color-primary-light);
    color: var(--color-primary-dark);
}

/* NEW: Field-specific error message */
.field-error-message {
    color: var(--color-text-error);
    font-size: var(--font-size-sm);
    margin-top: var(--spacing-xs);
    display: none; /* Hidden by default */
}
#content-pane-worksheets,
#content-pane-concepts {
    flex-grow: 1;
    padding: var(--spacing-xl);
    overflow-y: auto;
    background-color: var(--color-background-body);
    height: 100%;
}

/* NEW: Create Concept Modal Styles */
.concept-type-selection {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}
.concept-type-selection button {
    display: block;
    width: 100%;
    padding: var(--spacing-lg);
    border: 1px solid var(--color-border-primary);
    border-radius: var(--border-radius-lg);
    background-color: var(--color-background-surface);
    text-align: left;
    cursor: pointer;
    transition: border-color 0.2s, box-shadow 0.2s;
}
.concept-type-selection button:hover {
    border-color: var(--color-primary-main);
    box-shadow: var(--shadow-sm);
}
.concept-type-selection button strong {
    display: block;
    font-size: var(--font-size-md);
    font-weight: 600;
    color: var(--color-text-primary);
    margin-bottom: var(--spacing-xs);
}
.concept-type-selection button span {
    color: var(--color-text-secondary);
    font-size: var(--font-size-sm);
}
.tooltip-icon {
    display: inline-block;
    width: 16px;
    height: 16px;
    border-radius: 50%;
    background-color: var(--color-background-lvl2);
    color: var(--color-text-secondary);
    text-align: center;
    font-weight: bold;
    font-size: 12px;
    line-height: 16px;
    cursor: help;
    margin-left: var(--spacing-xs);
}
.filter-group-container {
    min-width: 150px;
}
#selected-doc-count {
    margin-right: var(--spacing-md);
    font-weight: 500;
    color: var(--color-text-secondary);
}

/* === HOMEPAGE SPECIFIC STYLES === */
#sidebar-home {
    flex-shrink: 0;
    background-color: var(--color-background-lvl1);
    padding: var(--spacing-xl);
    border-right: var(--border-width) solid var(--color-border-primary);
    overflow-y: auto;
    height: 100%;
    position: relative;
}
#sidebar-home .sidebar-section {
    margin-bottom: var(--spacing-lg);
    background-color: var(--color-background-surface);
    border-radius: var(--border-radius-md);
    box-shadow: var(--shadow-xs);
}
#sidebar-home .sidebar-section-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-md);
    font-size: var(--font-size-md);
    font-weight: 600;
    color: var(--color-text-primary);
    border-bottom: 1px solid var(--color-border-primary);
    border-top-left-radius: var(--border-radius-md);
    border-top-right-radius: var(--border-radius-md);
}
#sidebar-home .sidebar-section-header.collapsible-header {
     cursor: pointer;
}
#sidebar-home .sidebar-section-header.collapsible-header:hover {
    background-color: var(--color-background-lvl2);
}
#sidebar-home .sidebar-section-header .chevron {
    display: inline-block;
    width: 0.5em;
    height: 0.5em;
    border-right: 0.15em solid var(--color-text-secondary);
    border-bottom: 0.15em solid var(--color-text-secondary);
    transform: rotate(45deg);
    transition: transform 0.2s ease-in-out;
}
#sidebar-home .sidebar-section.collapsed > .sidebar-section-header .chevron {
    transform: rotate(-45deg);
}
#sidebar-home .sidebar-section-content {
    padding: var(--spacing-md);
}
#sidebar-home .sidebar-section.collapsed > .sidebar-section-content {
    display: none;
}
#sidebar-home .project-meta p {
    color: var(--color-text-primary);
    margin-bottom: var(--spacing-xs);
    font-size: var(--font-size-sm);
    margin-top: 0;
}
 #sidebar-home .project-meta strong {
    color: var(--color-text-secondary);
    display: block;
    margin-bottom: var(--spacing-xxs);
}
#sidebar-home .project-meta .meta-value {
    color: var(--color-text-primary);
    font-weight: 500;
    margin-top: 0;
    margin-bottom: var(--spacing-md);
}
#sidebar-home .placeholder-text {
    color: var(--color-text-tertiary);
    font-style: italic;
}
.content-block {
    background-color: var(--color-background-surface);
    padding: var(--spacing-xl);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-md);
    display: flex;
    flex-direction: column;
    flex-grow: 1;
    min-height: 0;
}
.content-block-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 1px solid var(--color-border-primary);
    padding-bottom: var(--spacing-md);
    margin-bottom: var(--spacing-md);
    flex-shrink: 0;
}
.content-view-toolbar {
    display: flex;
    margin-bottom: var(--spacing-lg);
    flex-shrink: 0;
}
.header-left-group {
    display: flex;
    align-items: center;
    gap: var(--spacing-xl);
    flex-grow: 1;
}
.header-right-group {
    flex-shrink: 0;
}
.content-block-header h3 {
    font-size: var(--font-size-lg);
    margin: 0;
    padding: 0;
    border: none;
    color: var(--color-text-primary);
}
.view-controls {
    display: flex;
    gap: var(--spacing-sm);
}
.view-control-btn {
    padding: var(--spacing-xs) var(--spacing-md);
    font-size: var(--font-size-sm);
    font-weight: 500;
    border: 1px solid var(--color-border-secondary);
    background-color: var(--color-background-lvl1);
    color: var(--color-text-secondary);
    border-radius: var(--border-radius-md);
    cursor: pointer;
    transition: background-color 0.15s, color 0.15s, border-color 0.15s;
}
.view-control-btn:hover {
    background-color: var(--color-background-interactive);
    border-color: var(--color-border-focus);
}
.view-control-btn.is-active {
    background-color: var(--color-primary-main);
    color: var(--color-text-on-primary);
    border-color: var(--color-primary-main);
    font-weight: 600;
}
.view-control-btn.is-active:hover {
    background-color: var(--color-primary-dark);
    border-color: var(--color-primary-dark);
}

/* NEW: Styles for custom worksheet dropdown */
.worksheet-select-container-custom {
    position: relative;
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}
.worksheet-select-container-custom label {
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
    font-weight: 500;
    margin: 0;
}
.worksheet-select-button {
    background-color: var(--color-background-surface);
    border: 1px solid var(--color-border-secondary);
    border-radius: var(--border-radius-md);
    padding: var(--spacing-xs) var(--spacing-md);
    font-size: var(--font-size-sm);
    font-weight: 500;
    color: var(--color-text-primary);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: space-between;
    min-width: 200px;
    text-align: left;
    transition: border-color 0.15s, box-shadow 0.15s;
}
.worksheet-select-button:hover,
.worksheet-select-container-custom.open .worksheet-select-button {
    border-color: var(--color-border-focus);
    box-shadow: var(--shadow-focus-ring);
}
.worksheet-select-button span {
    flex-grow: 1;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}
.worksheet-select-button::after {
    content: '';
    display: inline-block;
    width: 0.5em;
    height: 0.5em;
    border-right: 0.15em solid var(--color-text-secondary);
    border-bottom: 0.15em solid var(--color-text-secondary);
    transform: rotate(45deg);
    transition: transform 0.2s ease-in-out;
    margin-left: var(--spacing-sm);
    flex-shrink: 0;
}
.worksheet-select-container-custom.open .worksheet-select-button::after {
    transform: rotate(225deg);
}
.worksheet-select-dropdown {
    display: none;
    position: absolute;
    top: calc(100% + var(--spacing-xs));
    right: 0;
    background-color: var(--color-background-surface);
    border: 1px solid var(--color-border-primary);
    box-shadow: var(--shadow-lg);
    z-index: 101;
    min-width: 100%;
    max-height: 300px;
    overflow-y: auto;
    border-radius: var(--border-radius-md);
}
.worksheet-select-container-custom.open .worksheet-select-dropdown {
    display: block;
}
.worksheet-select-options {
    list-style: none;
    padding: var(--spacing-sm) 0;
    margin: 0;
}
.worksheet-select-option {
    padding: var(--spacing-sm) var(--spacing-lg);
    font-size: var(--font-size-sm);
    font-weight: 500;
    color: var(--color-text-primary);
    cursor: pointer;
    transition: background-color 0.1s ease-in-out, color 0.1s ease-in-out;
}
.worksheet-select-option:hover {
    background-color: var(--color-background-interactive);
    color: var(--color-primary-dark);
}
.worksheet-select-option.is-active {
    background-color: var(--color-primary-main);
    color: var(--color-text-on-primary);
    font-weight: 600;
}
.worksheet-select-option.is-active:hover {
    background-color: var(--color-primary-dark);
}


#batch-actions-toolbar {
    padding-bottom: var(--spacing-lg);
    border-bottom: 1px solid var(--color-border-primary);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    flex-wrap: wrap;
    flex-shrink: 0;
}
.document-table thead th.row-number-column,
.document-table thead th.merged-select-expand-column,
.document-table thead th[data-column-key="filename"] {
    z-index: 11;
}
.document-table td.row-number-column,
.document-table td.merged-select-expand-column,
.document-table td[data-column-key="filename"],
.document-table td[data-column-key="status"] {
    z-index: 1;
}
.document-table th.row-number-column,
.document-table td.row-number-column {
    position: sticky;
    left: 0;
    background-color: var(--color-background-lvl1);
    width: 50px;
    min-width: 50px;
    text-align: center;
    font-weight: 600;
    color: var(--color-text-tertiary);
}
.document-table td.row-number-column {
    background-color: var(--color-background-lvl1);
}
.document-table thead th.merged-select-expand-column {
    position: sticky;
    left: 50px; /* Width of row number column */
    background-color: var(--color-background-lvl1);
}
.document-table td.merged-select-expand-column {
    position: sticky;
    left: 50px; /* Width of row number column */
    background-color: var(--color-background-surface);
}
.document-table th.merged-select-expand-column,
.document-table td.merged-select-expand-column {
    width: 60px;
    min-width: 60px;
    padding: var(--spacing-md) 0;
    text-align: center;
    box-sizing: border-box;
}
.document-table thead th[data-column-key="filename"] {
    position: sticky;
    left: 110px; /* Width of row number + checkbox column */
    background-color: var(--color-background-lvl1);
}
.document-table td[data-column-key="filename"] {
    position: sticky;
    left: 110px; /* Width of row number + checkbox column */
    background-color: var(--color-background-surface);
}
.global-expansion-zone, .row-expansion-zone {
    position: absolute;
    right: 0;
    top: 0;
    bottom: 0;
    width: 24px;
    cursor: pointer;
    z-index: 2;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-text-tertiary);
}
.global-expansion-zone:hover, .row-expansion-zone:hover {
    background-color: rgba(0, 122, 255, 0.08);
    color: var(--color-primary-main);
}
.document-table thead th.merged-select-expand-column input[type="checkbox"],
.document-table td.merged-select-expand-column input[type="checkbox"] {
    position: relative;
    z-index: 2;
    margin-right: 25px;
    vertical-align: middle;
}
#active-filters-display {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
    padding: var(--spacing-md) 0;
    min-height: 28px;
    flex-shrink: 0;
}
.document-table .status-not-assigned {
    color: var(--color-text-tertiary);
    font-style: italic;
}
.sidebar-subsection {
    padding-top: var(--spacing-md);
    margin-top: var(--spacing-md);
    border-top: 1px solid var(--color-border-primary);
}
.sidebar-subsection h4 {
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--color-text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-top: 0;
    margin-bottom: var(--spacing-sm);
}
#project-team-list {
    list-style: none;
    padding: 0;
    margin: 0;
}
.team-member-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: var(--font-size-sm);
    padding: var(--spacing-xs) 0;
}
.team-member-item .username {
    font-weight: 500;
    color: var(--color-text-primary);
    flex-grow: 1;
}
.team-member-item .role-text {
    font-size: 0.9em;
    color: var(--color-text-tertiary);
    text-align: right;
}
#quick-actions-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}
#filter-container, #column-visibility-container {
    border: 1px solid var(--color-border-primary);
    border-radius: var(--border-radius-md);
    background-color: var(--color-background-lvl1);
    margin-bottom: var(--spacing-lg);
    position: relative;
    z-index: 20;
    display: none;
    flex-shrink: 0;
}
#filter-container.is-active,
#column-visibility-container.is-active {
    display: block;
}
#document-filter-bar, #column-list-bar {
    padding: var(--spacing-md);
    border-top: none;
    margin-bottom: 0;
    border-radius: 0;
    border: none;
    background-color: transparent;
    overflow: visible;
}
#column-list-bar {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
}
.column-list-item {
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--border-radius-md);
    cursor: pointer;
    border: 1px solid var(--color-border-secondary);
    background-color: var(--color-background-lvl1);
    color: var(--color-text-secondary);
    font-size: var(--font-size-sm);
    font-weight: 500;
    transition: background-color 0.15s, color 0.15s, border-color 0.15s;
    white-space: nowrap;
}
.column-list-item:hover {
    border-color: var(--color-text-secondary);
    background-color: var(--color-background-lvl2);
}
.column-list-item.active {
    background-color: var(--color-primary-light);
    color: var(--color-primary-dark);
    border-color: var(--color-primary-main);
}
.filter-input-group {
    position: relative;
}
#clear-search-btn {
    position: absolute;
    right: var(--spacing-sm);
    top: 50%;
    transform: translateY(-50%);
    background: none;
    border: none;
    cursor: pointer;
    color: var(--color-text-tertiary);
    font-size: 1.2em;
    padding: 0 var(--spacing-xs);
    display: none;
}
#clear-search-btn:hover {
    color: var(--color-text-primary);
}

/* === Shepherd.js Tour Custom Theme === */
.shepherd-element.ifp-tour-popup {
    background-color: var(--color-background-surface);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-xl);
    max-width: 350px;
}

.shepherd-element.ifp-tour-popup .shepherd-header {
    background-color: var(--color-background-lvl1);
    padding: var(--spacing-md) var(--spacing-lg);
    border-top-left-radius: var(--border-radius-lg);
    border-top-right-radius: var(--border-radius-lg);
}

.shepherd-element.ifp-tour-popup .shepherd-title {
    color: var(--color-text-primary);
    font-weight: 600;
    font-size: var(--font-size-lg);
}

.shepherd-element.ifp-tour-popup .shepherd-cancel-icon {
    color: var(--color-text-secondary);
}
.shepherd-element.ifp-tour-popup .shepherd-cancel-icon:hover {
    color: var(--color-text-primary);
}

.shepherd-element.ifp-tour-popup .shepherd-text {
    padding: var(--spacing-lg);
    color: var(--color-text-primary);
    font-size: var(--font-size-sm);
    line-height: var(--line-height-normal);
}

.shepherd-element.ifp-tour-popup .shepherd-footer {
    padding: var(--spacing-sm) var(--spacing-lg) var(--spacing-lg);
    display: flex;
    justify-content: flex-end;
    gap: var(--spacing-sm);
}

.shepherd-element.ifp-tour-popup .shepherd-button {
    background-color: var(--color-secondary-main);
    color: var(--color-text-on-dark);
    border: none;
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--border-radius-md);
    font-weight: 500;
    transition: background-color 0.15s ease-in-out;
}
.shepherd-element.ifp-tour-popup .shepherd-button:hover {
    background-color: var(--color-secondary-dark);
}

.shepherd-element.ifp-tour-popup .shepherd-button.shepherd-button-primary {
    background-color: var(--color-primary-main);
    color: var(--color-text-on-primary);
}
.shepherd-element.ifp-tour-popup .shepherd-button.shepherd-button-primary:hover {
    background-color: var(--color-primary-dark);
}

.shepherd-arrow::before {
    background-color: var(--color-background-surface);
}

/* === NEW: Shepherd.js Avatar Legend Styles === */
.shepherd-text-intro {
    margin-bottom: var(--spacing-lg);
}
.shepherd-avatar-legend {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
    margin-top: var(--spacing-sm);
}
.avatar-legend-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}
.avatar-legend-item .user-avatar {
    flex-shrink: 0;
    width: 32px;
    height: 32px;
    font-size: 1rem;
}
.avatar-legend-label {
    font-size: var(--font-size-sm);
    line-height: 1.4;
    color: var(--color-text-secondary);
}
.avatar-legend-label strong {
    color: var(--color-text-primary);
    display: block;
}

/* === NEW: Shepherd.js Manual Highlight Class === */
.tour-highlight-extra {
    position: relative;
    z-index: 9999; /* Must be higher than the shepherd overlay's z-index */
    box-shadow: 0 0 0 4px rgba(0, 122, 255, 0.5), var(--shadow-lg);
    border-radius: var(--border-radius-md);
    transition: box-shadow 0.2s ease-in-out;
}

/* === NEW: Shepherd.js Final Note Style === */
.shepherd-text-final-note {
    display: block;
    font-style: italic;
    font-size: 0.9em;
    color: var(--color-text-tertiary);
}


/* === NEW: Search Bar Styles === */
#search-bar-container {
    position: absolute;
    top: 10px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 1005;
    background-color: var(--color-background-surface);
    border-radius: var(--border-radius-md);
    box-shadow: var(--shadow-lg);
    padding: var(--spacing-sm);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    border: 1px solid var(--color-border-primary);
    cursor: move;
}
#search-input {
    border: 1px solid var(--color-border-input);
    border-radius: var(--border-radius-sm);
    padding: var(--spacing-xs) var(--spacing-sm);
    font-size: var(--font-size-sm);
    width: 200px;
    cursor: text;
}
#search-input:focus {
    outline: none;
    border-color: var(--color-border-focus);
    box-shadow: var(--shadow-focus-ring);
}
#search-input.no-results {
    border-color: var(--color-text-error);
    background-color: rgba(220, 53, 69, 0.05);
}
#search-results-count {
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
    font-weight: 500;
    padding: 0 var(--spacing-xs);
    min-width: 40px;
    text-align: center;
}
.pdf-search-highlight {
    position: absolute;
    background-color: #ffeb3b; /* A standard yellow */
    opacity: 0.4;
    mix-blend-mode: multiply;
    pointer-events: none;
    z-index: 9;
    border-radius: 2px;
    transition: background-color 0.2s ease-in-out, opacity 0.2s ease-in-out;
}
.pdf-search-highlight.active-match {
    background-color: #ff9800; /* A distinct orange for the active match */
    opacity: 0.6;
}