/* --- Premium Design System for Examurai --- */

:root {
    /* Color Palette */
    --bg-primary: #0a0c10;
    --bg-secondary: #11141b;
    --bg-surface: rgba(22, 26, 36, 0.65);
    --bg-surface-opaque: #161a24;
    
    --border-color: rgba(255, 255, 255, 0.06);
    --border-glow: rgba(99, 102, 241, 0.15);
    
    --accent-purple: #6366f1;
    --accent-purple-glow: rgba(99, 102, 241, 0.5);
    --accent-purple-hover: #4f46e5;
    
    --accent-mint: #10b981;
    --accent-mint-glow: rgba(16, 185, 129, 0.2);
    
    --accent-rose: #f43f5e;
    
    --text-main: #f3f4f6;
    --text-secondary: #9ca3af;
    --text-muted: #6b7280;
    
    /* Typography */
    --font-heading: 'Outfit', sans-serif;
    --font-body: 'Plus Jakarta Sans', sans-serif;
    
    /* Shadow and Blur */
    --shadow-premium: 0 8px 32px 0 rgba(0, 0, 0, 0.37);
    --blur-strength: 16px;
    --radius-lg: 16px;
    --radius-md: 10px;
    --radius-sm: 6px;
}

/* Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    background-color: var(--bg-primary);
    color: var(--text-main);
    font-family: var(--font-body);
    font-size: 15px;
    line-height: 1.6;
    overflow: hidden;
    height: 100vh;
    width: 100vw;
}

h1, h2, h3, h4 {
    font-family: var(--font-heading);
    font-weight: 600;
    letter-spacing: -0.02em;
    color: var(--text-main);
}

/* App Layout Grid */
#app {
    display: grid;
    grid-template-columns: 180px 1fr;
    height: 100vh;
    width: 100vw;
    transition: grid-template-columns 0.25s cubic-bezier(0.4, 0, 0.2, 1);
    background: radial-gradient(circle at 80% 20%, rgba(99, 102, 241, 0.08) 0%, rgba(10, 12, 16, 0) 50%),
                radial-gradient(circle at 10% 80%, rgba(16, 185, 129, 0.04) 0%, rgba(10, 12, 16, 0) 50%);
}

/* Sidebar Styling */
.sidebar {
    background-color: var(--bg-secondary);
    border-right: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    height: 100vh;
    padding: 16px 10px;
}

.brand {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 6px 8px 14px;
    border-bottom: 1px solid var(--border-color);
    margin-bottom: 14px;
}

.brand-icon {
    background: linear-gradient(135deg, var(--accent-purple) 0%, var(--accent-mint) 100%);
    width: 30px;
    height: 30px;
    min-width: 30px;
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-main);
    box-shadow: 0 4px 12px rgba(99, 102, 241, 0.3);
}

.brand h1 {
    font-size: 16px;
    font-weight: 800;
    background: linear-gradient(135deg, #ffffff 0%, #a5b4fc 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.nav-menu {
    display: flex;
    flex-direction: column;
    gap: 8px;
    flex-grow: 1;
}

.nav-item {
    background: none;
    border: none;
    outline: none;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 9px 10px;
    width: 100%;
    border-radius: var(--radius-sm);
    color: var(--text-secondary);
    font-family: var(--font-heading);
    font-weight: 500;
    font-size: 12.5px;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    text-align: left;
}

.nav-item svg {
    transition: transform 0.3s ease;
}

.nav-item:hover {
    color: var(--text-main);
    background-color: rgba(255, 255, 255, 0.03);
    padding-left: 14px;
}

.nav-item:hover svg {
    transform: translateX(2px);
}

.nav-item.active {
    color: #ffffff;
    background: linear-gradient(90deg, rgba(99, 102, 241, 0.15) 0%, rgba(99, 102, 241, 0.03) 100%);
    border-left: 3px solid var(--accent-purple);
    box-shadow: inset 0 0 10px rgba(99, 102, 241, 0.05);
    padding-left: 12px;
}

.sidebar-footer {
    padding-top: 10px;
    border-top: 1px solid var(--border-color);
}

.user-status {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 10.5px;
    color: var(--text-secondary);
    background-color: rgba(255, 255, 255, 0.02);
    padding: 7px 8px;
    border-radius: var(--radius-sm);
    border: 1px solid var(--border-color);
}

.status-indicator {
    width: 8px;
    height: 8px;
    border-radius: 50%;
}

.status-indicator.online {
    background-color: var(--accent-mint);
    box-shadow: 0 0 8px var(--accent-mint);
}

/* Main Content Styling */
.main-content {
    padding: 20px 24px;
    overflow-y: auto;
    height: 100vh;
}

/* Glassmorphism Cards */
.card.glass {
    background: var(--bg-surface);
    backdrop-filter: blur(var(--blur-strength));
    -webkit-backdrop-filter: blur(var(--blur-strength));
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-premium);
    padding: 24px;
    transition: border-color 0.3s ease, box-shadow 0.3s ease;
}

.card.glass:hover {
    border-color: rgba(99, 102, 241, 0.2);
}

.card-title {
    font-size: 18px;
    margin-bottom: 20px;
    border-left: 3px solid var(--accent-purple);
    padding-left: 12px;
}

/* Button Styling */
.btn {
    font-family: var(--font-heading);
    font-weight: 600;
    border-radius: var(--radius-md);
    cursor: pointer;
    border: none;
    outline: none;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    font-size: 14px;
}

.btn-primary {
    background: linear-gradient(135deg, var(--accent-purple) 0%, #4f46e5 100%);
    color: #ffffff;
    padding: 10px 20px;
    box-shadow: 0 4px 14px rgba(99, 102, 241, 0.3);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(99, 102, 241, 0.4);
}

.btn-secondary {
    background-color: rgba(255, 255, 255, 0.05);
    color: var(--text-main);
    border: 1px solid var(--border-color);
    padding: 10px 20px;
}

.btn-secondary:hover {
    background-color: rgba(255, 255, 255, 0.08);
    transform: translateY(-2px);
}

.btn-icon-only {
    width: 40px;
    height: 40px;
    border-radius: var(--radius-md);
    padding: 0;
}

.btn-sm {
    padding: 6px 12px;
    font-size: 12px;
}

/* Tab Panels */
.tab-panel {
    display: none;
    animation: fadeIn 0.4s ease;
}

.tab-panel.active {
    display: block;
}

.section-header {
    margin-bottom: 32px;
}

.section-header h2 {
    font-size: 28px;
    font-weight: 800;
    margin-bottom: 8px;
    background: linear-gradient(135deg, #ffffff 0%, #c7d2fe 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.section-header p {
    color: var(--text-secondary);
    font-size: 15px;
    max-width: 800px;
}

/* Dynamic Forms Elements */
.custom-select, .custom-select-small {
    background-color: rgba(10, 12, 16, 0.6);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    color: var(--text-main);
    padding: 10px 14px;
    font-family: var(--font-body);
    outline: none;
    width: 100%;
    transition: all 0.3s ease;
}

.custom-select:focus, .custom-select-small:focus {
    border-color: var(--accent-purple);
    box-shadow: 0 0 10px rgba(99, 102, 241, 0.2);
}

.custom-input-small, .custom-textarea-small {
    background-color: rgba(10, 12, 16, 0.5);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    color: var(--text-main);
    padding: 8px 12px;
    font-family: var(--font-body);
    outline: none;
    width: 100%;
    transition: all 0.3s ease;
}

.custom-input-small:focus, .custom-textarea-small:focus {
    border-color: var(--accent-purple);
    box-shadow: 0 0 8px rgba(99, 102, 241, 0.2);
}

/* Badges */
.badge-section {
    background-color: rgba(99, 102, 241, 0.12);
    border: 1px solid rgba(99, 102, 241, 0.3);
    color: #a5b4fc;
    padding: 4px 10px;
    border-radius: 50px;
    font-size: 11px;
    font-weight: 700;
    font-family: var(--font-heading);
    text-transform: uppercase;
}

.badge-marks {
    background-color: rgba(16, 185, 129, 0.12);
    border: 1px solid rgba(16, 185, 129, 0.3);
    color: #34d399;
    padding: 4px 10px;
    border-radius: 50px;
    font-size: 11px;
    font-weight: 700;
    font-family: var(--font-heading);
    text-transform: uppercase;
}

/* --- TAB 1: IMPORT CENTER --- */
.import-grid {
    display: grid;
    grid-template-columns: 1fr 1.2fr;
    gap: 24px;
    align-items: start;
}

.upload-card {
    height: 380px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    border: 2px dashed rgba(255, 255, 255, 0.12);
    cursor: pointer;
    text-align: center;
    position: relative;
    overflow: hidden;
    background: radial-gradient(circle at center, rgba(99, 102, 241, 0.03) 0%, rgba(22, 26, 36, 0.65) 100%);
}

.upload-card:hover {
    border-color: var(--accent-purple);
    background: radial-gradient(circle at center, rgba(99, 102, 241, 0.05) 0%, rgba(22, 26, 36, 0.75) 100%);
}

.upload-icon {
    color: var(--text-secondary);
    margin-bottom: 20px;
    transition: transform 0.3s ease, color 0.3s ease;
}

.upload-card:hover .upload-icon {
    transform: translateY(-8px);
    color: var(--accent-purple);
}

.upload-card h3 {
    font-size: 18px;
    margin-bottom: 6px;
}

.upload-card p {
    color: var(--text-secondary);
    font-size: 14px;
    margin-bottom: 20px;
}

.file-limits {
    font-size: 12px;
    color: var(--text-muted);
}

/* Loader Overlay */
.upload-loader {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: var(--bg-secondary);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 32px;
    z-index: 10;
    animation: fadeIn 0.3s ease;
}

.spinner {
    width: 50px;
    height: 50px;
    border: 3px solid rgba(255, 255, 255, 0.05);
    border-top: 3px solid var(--accent-purple);
    border-bottom: 3px solid var(--accent-mint);
    border-radius: 50%;
    animation: spin 1.2s cubic-bezier(0.5, 0, 0.5, 1) infinite;
    margin-bottom: 24px;
}

.upload-loader h4 {
    font-size: 18px;
    margin-bottom: 8px;
}

.upload-loader p {
    color: var(--text-secondary);
    font-size: 13px;
    text-align: center;
    max-width: 320px;
}

/* Exams List Item */
.exams-list {
    display: flex;
    flex-direction: column;
    gap: 12px;
    max-height: 420px;
    overflow-y: auto;
}

.exam-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 16px 20px;
    border-radius: var(--radius-md);
    background-color: rgba(255, 255, 255, 0.02);
    border: 1px solid var(--border-color);
    transition: all 0.2s ease;
}

.exam-item:hover {
    background-color: rgba(255, 255, 255, 0.04);
    border-color: rgba(255, 255, 255, 0.1);
    transform: translateX(4px);
}

.exam-info h4 {
    font-size: 15px;
    margin-bottom: 4px;
    color: var(--text-main);
}

.exam-meta {
    display: flex;
    gap: 14px;
    font-size: 12px;
    color: var(--text-secondary);
}

.exam-meta span {
    display: flex;
    align-items: center;
    gap: 4px;
}

/* Empty State Styling */
.empty-state {
    padding: 4px 0;
    font-size: 11.5px;
    font-style: italic;
    color: var(--text-muted);
}

.empty-state-large {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: 64px 32px;
    height: 100%;
}

.empty-state-large svg {
    color: var(--text-muted);
    margin-bottom: 24px;
}

.empty-state-large h2 {
    font-size: 20px;
    margin-bottom: 8px;
}

.empty-state-large p {
    color: var(--text-secondary);
    max-width: 420px;
    font-size: 14px;
}

/* --- TAB 2: QUESTION TAGGER --- */
.tagging-layout {
    display: grid;
    grid-template-columns: 230px 1fr;
    gap: 16px;
    height: calc(100vh - 128px);
}

.tagging-sidebar {
    height: 100%;
    display: flex;
    flex-direction: column;
    padding: 0 !important;
    overflow: hidden;
}

.tagging-sidebar .sidebar-header {
    padding: 12px;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.tagging-sidebar .sidebar-header h3 {
    font-size: 13px;
}

.questions-nav {
    flex-grow: 1;
    overflow-y: auto;
    padding: 12px;
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.q-nav-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 12px 16px;
    border-radius: var(--radius-sm);
    color: var(--text-secondary);
    background: none;
    border: 1px solid transparent;
    cursor: pointer;
    transition: all 0.2s ease;
    text-align: left;
    width: 100%;
}

.q-nav-item:hover {
    color: var(--text-main);
    background-color: rgba(255, 255, 255, 0.02);
}

.q-nav-item.active {
    color: #ffffff;
    background-color: rgba(99, 102, 241, 0.08);
    border-color: rgba(99, 102, 241, 0.2);
}

.q-nav-name {
    font-family: var(--font-heading);
    font-weight: 600;
    font-size: 14px;
}

.q-nav-badge {
    font-size: 10px;
    background-color: rgba(255, 255, 255, 0.05);
    padding: 2px 6px;
    border-radius: 4px;
    color: var(--text-secondary);
}

.q-nav-item.active .q-nav-badge {
    background-color: rgba(99, 102, 241, 0.2);
    color: var(--text-main);
}

/* Right Tagger main pane */
.tagging-main-container {
    height: 100%;
    overflow: hidden;
}

.tagger-panel {
    display: grid;
    grid-template-rows: auto 1fr;
    gap: 12px;
    height: 100%;
}

.tagger-details-card {
    display: flex;
    flex-direction: column;
    gap: 6px;
    padding: 8px 16px !important;
}

.detail-top {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.question-identity {
    display: flex;
    align-items: center;
    gap: 12px;
}

.question-identity h2 {
    font-size: 20px;
}

/* Collapsible drawer */
.adjust-drawer {
    background-color: rgba(10, 12, 16, 0.3);
    border-radius: var(--radius-md);
    padding: 16px;
    border: 1px solid var(--border-color);
    animation: slideDown 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.form-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 12px;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.form-group label {
    font-size: 12px;
    color: var(--text-secondary);
    font-weight: 600;
}

.adjust-actions {
    display: flex;
    gap: 8px;
    justify-content: flex-end;
    margin-top: 14px;
}

.tags-manager h4, .class-seen-manager h4 {
    font-size: 11.5px;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 4px;
}

.active-tags-list {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    min-height: 28px;
}

.tag-bubble {
    background-color: rgba(99, 102, 241, 0.08);
    border: 1px solid rgba(99, 102, 241, 0.2);
    color: #a5b4fc;
    padding: 4px 10px;
    border-radius: 50px;
    font-size: 12px;
    font-weight: 500;
    display: flex;
    align-items: center;
    gap: 6px;
    animation: scaleUp 0.2s ease;
}

.tag-bubble button {
    background: none;
    border: none;
    color: rgba(255, 255, 255, 0.4);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0;
    transition: color 0.2s ease;
}

.tag-bubble button:hover {
    color: var(--accent-rose);
}

/* Sidebar Mini Tag Pills */
.q-nav-tags-row {
    margin-top: 2px;
}

.q-nav-tag {
    background-color: rgba(99, 102, 241, 0.05);
    border: 1px solid rgba(99, 102, 241, 0.15);
    color: #a5b4fc;
    padding: 1px 6px;
    border-radius: 4px;
    font-size: 9.5px;
    font-weight: 500;
    display: inline-flex;
    align-items: center;
    gap: 3px;
    line-height: 1.2;
    transition: all 0.2s ease;
}

.q-nav-tag:hover {
    background-color: rgba(99, 102, 241, 0.08);
    border-color: rgba(99, 102, 241, 0.3);
}

.q-nav-tag.untagged {
    background-color: rgba(255, 255, 255, 0.01);
    border-color: rgba(255, 255, 255, 0.04);
    color: var(--text-muted);
    opacity: 0.55;
    padding: 1px 4px;
    font-style: italic;
}

.q-nav-tag-remove {
    cursor: pointer;
    color: rgba(255, 255, 255, 0.35);
    font-size: 10px;
    font-weight: 700;
    transition: color 0.15s ease;
    margin-left: 2px;
    display: flex;
    align-items: center;
    justify-content: center;
    height: 10px;
    width: 10px;
    border-radius: 50%;
}

.q-nav-tag-remove:hover {
    color: var(--accent-rose);
    background-color: rgba(244, 63, 94, 0.1);
}


/* Add custom input */
.tag-input-wrapper {
    display: flex;
    gap: 8px;
    max-width: 480px;
}

.custom-tag-input {
    background-color: rgba(10, 12, 16, 0.5);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    color: var(--text-main);
    padding: 6px 12px;
    font-size: 12px;
    outline: none;
    width: 100%;
    transition: all 0.3s ease;
}

.custom-tag-input:focus {
    border-color: var(--accent-purple);
    box-shadow: 0 0 10px rgba(99, 102, 241, 0.15);
}

/* Suggest tag list toggles */
.suggested-tags {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 11.5px;
}

.suggested-tags span {
    color: var(--text-secondary);
    font-weight: 600;
    white-space: nowrap;
}

.suggested-list {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
}

.btn-tag-suggest {
    background-color: rgba(255, 255, 255, 0.02);
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
    padding: 2px 8px;
    border-radius: 50px;
    font-size: 10.5px;
    cursor: pointer;
    font-family: var(--font-body);
    transition: all 0.2s ease;
}

.btn-tag-suggest:hover {
    border-color: rgba(99, 102, 241, 0.3);
    color: var(--text-main);
    background-color: rgba(99, 102, 241, 0.03);
}

.btn-tag-suggest.active {
    background-color: var(--accent-mint-glow);
    border-color: rgba(16, 185, 129, 0.5);
    color: #6ee7b7;
}

/* PDF Visual Viewer Canvas */
.tagger-viewer-card {
    display: flex;
    flex-direction: column;
    height: 100%;
    padding: 0 !important;
    overflow: hidden;
}

.viewer-header {
    padding: 16px 24px;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: space-between;
    background-color: rgba(17, 20, 27, 0.3);
}

.viewer-header h3 {
    font-size: 15px;
}

.viewer-pages-indicator {
    font-size: 12px;
    color: var(--text-secondary);
    font-weight: 600;
}

.viewer-canvas {
    flex-grow: 1;
    overflow-y: auto;
    padding: 24px;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 20px;
    background-color: rgba(10, 12, 16, 0.3);
}

.viewer-canvas img {
    width: 100%;
    max-width: 1100px;
    height: auto;
    border-radius: var(--radius-md);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
    border: 1px solid rgba(255, 255, 255, 0.05);
    transition: transform 0.3s ease;
}

.viewer-canvas img:hover {
    transform: scale(1.01);
}

/* --- TAB 3: TAG LIBRARY SEARCH --- */
.search-toolbar {
    margin-bottom: 24px;
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.search-input-group {
    position: relative;
    width: 100%;
}

.search-icon-svg {
    position: absolute;
    left: 18px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-muted);
}

.search-input {
    width: 100%;
    background-color: rgba(10, 12, 16, 0.6);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    color: var(--text-main);
    padding: 16px 20px 16px 52px;
    font-family: var(--font-body);
    font-size: 16px;
    outline: none;
    transition: all 0.3s ease;
}

.search-input:focus {
    border-color: var(--accent-purple);
    box-shadow: 0 0 16px rgba(99, 102, 241, 0.15);
}

.search-filters-row {
    display: flex;
    gap: 16px;
    margin-top: 4px;
    flex-wrap: wrap;
    width: 100%;
}

.filter-control {
    display: flex;
    flex-direction: column;
    gap: 6px;
    flex: 1;
    min-width: 200px;
}

.filter-control label {
    font-size: 11px;
    text-transform: uppercase;
    color: var(--text-muted);
    font-weight: 600;
    letter-spacing: 0.5px;
}

.filter-select {
    width: 100%;
    background-color: rgba(10, 12, 16, 0.6);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    color: var(--text-main);
    padding: 12px 16px;
    font-family: var(--font-body);
    font-size: 14px;
    outline: none;
    transition: all 0.3s ease;
    cursor: pointer;
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%2394a3b8' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 14px center;
    background-size: 14px;
    padding-right: 36px;
}

.filter-select:focus {
    border-color: var(--accent-purple);
    box-shadow: 0 0 12px rgba(99, 102, 241, 0.1);
}


.tag-cloud-wrapper {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.tag-cloud-wrapper h4 {
    font-size: 13px;
    color: var(--text-secondary);
    text-transform: uppercase;
}

.tag-cloud {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.tag-cloud-item {
    background-color: rgba(255, 255, 255, 0.02);
    border: 1px solid var(--border-color);
    border-radius: 50px;
    color: var(--text-secondary);
    padding: 6px 14px;
    font-size: 12px;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 6px;
    transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

.tag-cloud-item:hover {
    border-color: var(--accent-purple);
    color: var(--text-main);
    background-color: rgba(99, 102, 241, 0.05);
}

.tag-cloud-item.active {
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.2) 0%, rgba(99, 102, 241, 0.05) 100%);
    border-color: var(--accent-purple);
    color: #ffffff;
    box-shadow: 0 2px 10px rgba(99, 102, 241, 0.1);
}

.tag-count {
    background-color: rgba(255, 255, 255, 0.08);
    border-radius: 50%;
    width: 18px;
    height: 18px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 9px;
    font-weight: 700;
}

.tag-cloud-item.active .tag-count {
    background-color: var(--accent-purple);
    color: #ffffff;
}

/* Results Grid */
.search-results-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(360px, 1fr));
    gap: 20px;
}

/* Result Card */
.q-result-card {
    background: var(--bg-surface);
    backdrop-filter: blur(var(--blur-strength));
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-premium);
    padding: 20px;
    display: flex;
    flex-direction: column;
    gap: 16px;
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.q-result-card:hover {
    border-color: rgba(99, 102, 241, 0.25);
    box-shadow: 0 12px 40px rgba(99, 102, 241, 0.08);
    transform: translateY(-4px);
}

.q-result-header {
    display: flex;
    justify-content: space-between;
    align-items: start;
}

.q-result-exam {
    font-size: 11px;
    color: var(--text-muted);
    font-weight: 700;
    text-transform: uppercase;
}

.q-result-title {
    font-family: var(--font-heading);
    font-size: 16px;
    font-weight: 700;
    margin-top: 4px;
}

.q-result-body {
    font-size: 13.5px;
    color: var(--text-secondary);
    display: -webkit-box;
    -webkit-line-clamp: 4;
    -webkit-box-orient: vertical;
    overflow: hidden;
    text-overflow: ellipsis;
    line-height: 1.5;
    background-color: rgba(10, 12, 16, 0.15);
    padding: 10px;
    border-radius: var(--radius-sm);
    flex-grow: 1;
}

.q-result-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 4px;
}

.q-result-tag {
    background-color: rgba(255, 255, 255, 0.04);
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
    padding: 2px 8px;
    border-radius: 4px;
    font-size: 11px;
    font-weight: 500;
}

/* --- MODAL DIALOG --- */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background-color: rgba(10, 12, 16, 0.85);
    backdrop-filter: blur(8px);
    z-index: 100;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 40px;
    animation: fadeIn 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.modal-content {
    background-color: var(--bg-secondary);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: var(--radius-lg);
    box-shadow: 0 20px 80px rgba(0, 0, 0, 0.7);
    width: 100%;
    max-width: 1200px;
    height: 100%;
    max-height: 800px;
    position: relative;
    overflow: hidden;
}

.modal-close {
    position: absolute;
    top: 20px;
    right: 20px;
    background-color: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--border-color);
    border-radius: 50%;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    color: var(--text-secondary);
    z-index: 10;
    transition: all 0.2s ease;
}

.modal-close:hover {
    color: var(--text-main);
    background-color: rgba(255, 255, 255, 0.08);
    border-color: rgba(255, 255, 255, 0.2);
}

.modal-body-split {
    display: grid;
    grid-template-columns: 460px 1fr;
    height: 100%;
}

.modal-info-column {
    border-right: 1px solid var(--border-color);
    padding: 32px;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.modal-exam-title {
    font-size: 11px;
    font-weight: 700;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.modal-q-identity {
    display: flex;
    align-items: center;
    gap: 12px;
}

.modal-q-identity h2 {
    font-size: 24px;
}

.modal-divider {
    height: 1px;
    background-color: var(--border-color);
}

.modal-section-title {
    font-family: var(--font-heading);
    font-size: 13px;
    color: var(--text-secondary);
    text-transform: uppercase;
    font-weight: 600;
}

.modal-text-content {
    background-color: rgba(10, 12, 16, 0.3);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 16px;
    font-size: 14px;
    color: var(--text-main);
    white-space: pre-wrap;
    line-height: 1.6;
    overflow-y: auto;
    max-height: 280px;
    font-family: var(--font-body);
}

.modal-tags-list {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
}

.modal-tag-pill {
    background-color: rgba(99, 102, 241, 0.08);
    border: 1px solid rgba(99, 102, 241, 0.2);
    color: #a5b4fc;
    padding: 4px 12px;
    border-radius: 50px;
    font-size: 12px;
    font-weight: 500;
}

.modal-visual-column {
    display: flex;
    flex-direction: column;
    height: 100%;
    overflow: hidden;
}

.modal-canvas-header {
    padding: 24px 32px;
    border-bottom: 1px solid var(--border-color);
    background-color: rgba(17, 20, 27, 0.3);
}

.modal-canvas-header h3 {
    font-size: 16px;
}

.modal-canvas {
    flex-grow: 1;
    overflow-y: auto;
    padding: 32px;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 24px;
    background-color: rgba(10, 12, 16, 0.4);
}

.modal-canvas img {
    width: 100%;
    max-width: 720px;
    border-radius: var(--radius-md);
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.6);
    border: 1px solid rgba(255, 255, 255, 0.06);
}

/* Animations */
@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

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

@keyframes slideDown {
    from { transform: translateY(-10px); opacity: 0; }
    to { transform: translateY(0); opacity: 1; }
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

/* Custom Scrollbar Styles */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background-color: transparent;
}

::-webkit-scrollbar-thumb {
    background-color: rgba(255, 255, 255, 0.06);
    border-radius: 10px;
    transition: background-color 0.2s ease;
}

::-webkit-scrollbar-thumb:hover {
    background-color: rgba(255, 255, 255, 0.12);
}

/* Layout Utilities */
.margin-top-sm {
    margin-top: 12px;
}

/* Bulk Tagger Checkbox and Layout Custom CSS */
.q-nav-item-row {
    display: flex;
    align-items: center;
    gap: 8px;
    width: 100%;
    border-radius: var(--radius-sm);
    transition: background-color 0.2s ease;
    padding-left: 10px;
    border: 1px solid transparent;
}

.q-nav-item-row:hover {
    background-color: rgba(255, 255, 255, 0.02);
}

.q-nav-item-row.checked {
    background-color: rgba(99, 102, 241, 0.03);
}

.q-checkbox-container {
    display: inline-block;
    position: relative;
    cursor: pointer;
    width: 18px;
    height: 18px;
    user-select: none;
    flex-shrink: 0;
}

.q-checkbox-container input {
    position: absolute;
    opacity: 0;
    cursor: pointer;
    height: 0;
    width: 0;
}

.q-checkbox-checkmark {
    position: absolute;
    top: 0;
    left: 0;
    height: 18px;
    width: 18px;
    background-color: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--border-color);
    border-radius: 4px;
    transition: all 0.2s ease;
}

.q-checkbox-container:hover input ~ .q-checkbox-checkmark {
    background-color: rgba(255, 255, 255, 0.06);
    border-color: var(--accent-purple);
}

.q-checkbox-container input:checked ~ .q-checkbox-checkmark {
    background-color: var(--accent-purple);
    border-color: var(--accent-purple);
    box-shadow: 0 0 8px var(--accent-purple-glow);
}

.q-checkbox-checkmark:after {
    content: "";
    position: absolute;
    display: none;
}

.q-checkbox-container input:checked ~ .q-checkbox-checkmark:after {
    display: block;
}

.q-checkbox-container .q-checkbox-checkmark:after {
    left: 6px;
    top: 2px;
    width: 4px;
    height: 9px;
    border: solid white;
    border-width: 0 2px 2px 0;
    transform: rotate(45deg);
}

/* Bulk tagging panel view rules */
.tagger-bulk-panel {
    display: flex;
    flex-direction: column;
    gap: 20px;
    padding: 24px !important;
    height: 100%;
    overflow-y: auto;
    animation: fadeIn 0.4s ease;
}

.bulk-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.bulk-identity {
    display: flex;
    align-items: center;
    gap: 12px;
}

.bulk-identity h2 {
    font-size: 20px;
}

.bulk-selected-list-box h4 {
    font-size: 13px;
    color: var(--text-secondary);
    text-transform: uppercase;
    margin-bottom: 10px;
    letter-spacing: 0.05em;
}

.bulk-selected-questions-grid {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    max-height: 130px;
    overflow-y: auto;
    background-color: rgba(10, 12, 16, 0.3);
    border: 1px solid var(--border-color);
    padding: 12px;
    border-radius: var(--radius-md);
}

.bulk-q-pill {
    background-color: rgba(99, 102, 241, 0.08);
    border: 1px solid rgba(99, 102, 241, 0.2);
    color: #a5b4fc;
    padding: 4px 10px;
    border-radius: 6px;
    font-size: 12px;
    font-weight: 600;
}

.bulk-actions-box h3 {
    font-size: 15px;
    margin-bottom: 4px;
}

.bulk-help-text {
    font-size: 12px;
    color: var(--text-secondary);
}

.btn-tag-suggest-bulk {
    background-color: rgba(255, 255, 255, 0.02);
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
    padding: 4px 10px;
    border-radius: 50px;
    font-size: 11px;
    cursor: pointer;
    font-family: var(--font-body);
    transition: all 0.2s ease;
}

.btn-tag-suggest-bulk:hover {
    border-color: rgba(99, 102, 241, 0.3);
    color: var(--text-main);
    background-color: rgba(99, 102, 241, 0.03);
}

.btn-tag-suggest-bulk.active {
    background-color: var(--accent-mint-glow);
    border-color: rgba(16, 185, 129, 0.5);
    color: #6ee7b7;
}

/* Class Tracker Visual CSS Styles */
.class-seen-card {
    background-color: rgba(255, 255, 255, 0.02);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 14px 18px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: all 0.2s ease;
    cursor: pointer;
    user-select: none;
    border-left: 3px solid transparent;
}

.class-seen-card:hover {
    background-color: rgba(255, 255, 255, 0.04);
    border-color: rgba(99, 102, 241, 0.2);
    transform: translateY(-2px);
}

.class-seen-card.seen {
    background: radial-gradient(circle at top right, rgba(16, 185, 129, 0.06) 0%, rgba(22, 26, 36, 0.65) 100%);
    border-color: rgba(16, 185, 129, 0.35);
    border-left: 3px solid var(--accent-mint);
    box-shadow: 0 4px 20px rgba(16, 185, 129, 0.03);
}

.class-seen-info {
    display: flex;
    flex-direction: column;
    gap: 4px;
    flex-grow: 1;
}

.class-seen-q-title {
    font-family: var(--font-heading);
    font-size: 14.5px;
    font-weight: 700;
    color: var(--text-main);
}

.class-seen-q-meta {
    font-size: 11px;
    color: var(--text-secondary);
}

.class-seen-status-badge {
    font-family: var(--font-heading);
    font-size: 10px;
    font-weight: 700;
    padding: 4px 10px;
    border-radius: 50px;
    text-transform: uppercase;
    background-color: rgba(255, 255, 255, 0.04);
    color: var(--text-muted);
    border: 1px solid var(--border-color);
    transition: all 0.2s ease;
}

.class-seen-card.seen .class-seen-status-badge {
    background-color: rgba(16, 185, 129, 0.15);
    color: #34d399;
    border-color: rgba(16, 185, 129, 0.3);
    box-shadow: 0 0 8px rgba(16, 185, 129, 0.15);
}

/* Class Checklist in Question details tagger */
.class-seen-checkbox-label {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 11.5px;
    color: var(--text-secondary);
    cursor: pointer;
    background-color: rgba(255, 255, 255, 0.02);
    border: 1px solid var(--border-color);
    padding: 4px 10px;
    border-radius: 50px;
    transition: all 0.2s ease;
    user-select: none;
}

.class-seen-checkbox-label:hover {
    color: var(--text-main);
    border-color: rgba(99, 102, 241, 0.3);
    background-color: rgba(99, 102, 241, 0.03);
}

.class-seen-checkbox-label input {
    accent-color: var(--accent-mint);
    cursor: pointer;
    width: 14px;
    height: 14px;
}

.class-seen-checkbox-label.checked {
    background-color: rgba(16, 185, 129, 0.1);
    border-color: rgba(16, 185, 129, 0.35);
    color: #6ee7b7;
}

/* Seen badges for search results card */
.q-result-seen-badge {
    background-color: rgba(16, 185, 129, 0.1);
    border: 1px solid rgba(16, 185, 129, 0.25);
    color: #34d399;
    padding: 2px 6px;
    border-radius: 4px;
    font-size: 10px;
    font-weight: 700;
    font-family: var(--font-heading);
    text-transform: uppercase;
}


/* ==========================================================================
   --- SUITE 10 & 11: WORKSHEET BUILDER & SYLLABUS ANALYTICS STYLING ---
   ========================================================================== */

/* Floating Worksheet Builder Launcher */
.worksheet-basket-launcher {
    position: fixed;
    bottom: 24px;
    right: 24px;
    width: 56px;
    height: 56px;
    border-radius: 50%;
    background: rgba(16, 185, 129, 0.15);
    border: 1.5px solid rgba(16, 185, 129, 0.45);
    color: #6ee7b7;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    box-shadow: 0 0 24px rgba(16, 185, 129, 0.25), inset 0 0 10px rgba(16, 185, 129, 0.1);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    transition: all 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    z-index: 1000;
}

.worksheet-basket-launcher:hover {
    transform: scale(1.1) rotate(5deg);
    background: rgba(16, 185, 129, 0.25);
    box-shadow: 0 0 30px rgba(16, 185, 129, 0.45), inset 0 0 15px rgba(16, 185, 129, 0.2);
    color: #a7f3d0;
}

.worksheet-basket-launcher:active {
    transform: scale(0.95);
}

.worksheet-basket-launcher .basket-badge {
    position: absolute;
    top: -2px;
    right: -2px;
    background: var(--accent-rose);
    border: 1.5px solid #000;
    color: #fff;
    font-size: 10px;
    font-weight: 800;
    width: 20px;
    height: 20px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 0 10px rgba(244, 63, 94, 0.4);
    transition: all 0.3s ease;
}

/* Builder Drawer Overlay & Sidebar Drawer */
.builder-drawer-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background-color: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(6px);
    -webkit-backdrop-filter: blur(6px);
    z-index: 1100;
    display: flex;
    justify-content: flex-end;
    transition: all 0.3s ease;
}

.builder-drawer {
    width: 440px;
    height: 100%;
    background: rgba(13, 16, 23, 0.88) !important;
    border-left: 1px solid var(--border-color);
    box-shadow: -10px 0 40px rgba(0, 0, 0, 0.6);
    display: flex;
    flex-direction: column;
    overflow: hidden;
    animation: drawerSlideIn 0.35s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

@keyframes drawerSlideIn {
    from {
        transform: translateX(100%);
    }
    to {
        transform: translateX(0);
    }
}

.drawer-header {
    padding: 24px 28px;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.drawer-header h2 {
    font-size: 18px;
    font-weight: 700;
    color: var(--text-main);
    margin-bottom: 4px;
}

.drawer-header p {
    font-size: 11px;
    color: var(--text-muted);
    margin: 0;
}

.drawer-close {
    background: none;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
    transition: color 0.2s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 6px;
    border-radius: 50%;
}

.drawer-close:hover {
    color: var(--text-main);
    background-color: rgba(255, 255, 255, 0.05);
}

.drawer-body {
    padding: 24px 28px;
    display: flex;
    flex-direction: column;
    flex-grow: 1;
    overflow: hidden;
}

.drawer-section h4 {
    font-size: 11px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--text-muted);
    margin-bottom: 12px;
}

.input-field-group label {
    font-size: 10px;
    color: var(--text-secondary);
    font-weight: 600;
    margin-bottom: 4px;
    display: block;
}

/* Builder Queue List Items */
.builder-queue-list {
    margin-top: 4px;
}

.builder-queue-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    padding: 8px 12px;
    transition: all 0.2s ease;
}

.builder-queue-item:hover {
    background: rgba(255, 255, 255, 0.04);
    border-color: rgba(255, 255, 255, 0.1);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
}

.queue-item-info {
    display: flex;
    flex-direction: column;
    gap: 2px;
    flex-grow: 1;
    min-width: 0;
    padding-right: 8px;
}

.queue-item-title {
    font-size: 12px;
    font-weight: 700;
    color: var(--text-main);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.queue-item-sub {
    font-size: 10px;
    color: var(--text-muted);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.queue-item-controls {
    display: flex;
    align-items: center;
    gap: 4px;
    flex-shrink: 0;
}

.btn-queue-order, .btn-queue-delete {
    background: none;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
    padding: 4px;
    border-radius: 4px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s ease;
}

.btn-queue-order:hover {
    color: var(--text-main);
    background-color: rgba(255, 255, 255, 0.05);
}

.btn-queue-delete:hover {
    color: var(--accent-rose);
    background-color: rgba(244, 63, 94, 0.08);
}

/* Add to Worksheet Card Toggles */
.btn-worksheet-toggle {
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    color: var(--text-secondary);
    padding: 6px 10px;
    font-size: 11px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s ease;
    display: flex;
    align-items: center;
    gap: 6px;
    height: fit-content;
}

.btn-worksheet-toggle:hover {
    border-color: rgba(99, 102, 241, 0.3);
    background: rgba(99, 102, 241, 0.05);
    color: var(--text-main);
}

.btn-worksheet-toggle.added {
    background: rgba(16, 185, 129, 0.1);
    border-color: rgba(16, 185, 129, 0.35);
    color: #6ee7b7;
    box-shadow: 0 0 8px rgba(16, 185, 129, 0.1);
}

.btn-worksheet-toggle.added:hover {
    background: rgba(244, 63, 94, 0.1);
    border-color: rgba(244, 63, 94, 0.35);
    color: var(--accent-rose);
}

/* Loading Compilation overlay inside drawer footer */
.compile-loader-container {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(13, 16, 23, 0.95);
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    border-radius: var(--radius-md);
    gap: 12px;
    z-index: 10;
    box-shadow: 0 -4px 20px rgba(0, 0, 0, 0.4);
}

.compile-loader-container span {
    font-size: 11px;
    font-weight: 600;
    color: #a7f3d0;
}

.loader-spinner {
    width: 24px;
    height: 24px;
    border: 2px solid rgba(16, 185, 129, 0.15);
    border-radius: 50%;
    border-top-color: #34d399;
    animation: spin 0.8s linear infinite;
    box-shadow: 0 0 10px rgba(52, 211, 153, 0.2);
}

@keyframes spin {
    to { transform: rotate(360deg); }
}


/* Syllabus Progress bar analytics card */
.class-analytics-card {
    transition: transform 0.3s ease;
}

.syllabus-domain-item {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.syllabus-domain-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.syllabus-domain-name {
    font-size: 11.5px;
    font-weight: 700;
    color: var(--text-secondary);
}

.syllabus-domain-percentage {
    font-size: 11px;
    font-weight: 800;
    font-family: var(--font-heading);
}

.syllabus-progress-bar-wrapper {
    height: 5px;
    background: rgba(255, 255, 255, 0.04);
    border-radius: 50px;
    overflow: hidden;
    width: 100%;
}

.syllabus-progress-bar-fill {
    height: 100%;
    border-radius: 50px;
    transition: width 0.4s cubic-bezier(0.16, 1, 0.3, 1);
    box-shadow: 0 0 8px rgba(99, 102, 241, 0.3);
}

.syllabus-domain-stats {
    font-size: 9.5px;
    color: var(--text-muted);
    font-weight: 500;
}

/* Search match highlights */
.search-highlight {
    background: rgba(99, 102, 241, 0.28);
    color: #e0e7ff;
    padding: 0 4px;
    border-radius: 3px;
    font-weight: 500;
    text-shadow: 0 0 8px rgba(99, 102, 241, 0.4);
}

/* --- EXAMINER'S REPORT & DIFFICULTY RATINGS EXTENSIONS --- */

/* Glassmorphism Cohort Success / Difficulty Badges */
.badge-difficulty {
    padding: 3px 10px;
    border-radius: 50px;
    font-size: 11px;
    font-weight: 600;
    display: inline-flex;
    align-items: center;
    border: 1px solid rgba(255, 255, 255, 0.08);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    font-family: var(--font-heading);
    transition: all 0.3s ease;
}

/* Color Coding based on Cohort Success Rate */
.badge-difficulty.diff-easy {
    background: linear-gradient(135deg, rgba(16, 185, 129, 0.12) 0%, rgba(16, 185, 129, 0.04) 100%);
    border-color: rgba(16, 185, 129, 0.25);
    color: #34d399;
    box-shadow: 0 0 10px rgba(16, 185, 129, 0.08);
}

.badge-difficulty.diff-medium {
    background: linear-gradient(135deg, rgba(245, 158, 11, 0.12) 0%, rgba(245, 158, 11, 0.04) 100%);
    border-color: rgba(245, 158, 11, 0.25);
    color: #fbbf24;
    box-shadow: 0 0 10px rgba(245, 158, 11, 0.08);
}

.badge-difficulty.diff-hard {
    background: linear-gradient(135deg, rgba(244, 63, 94, 0.12) 0%, rgba(244, 63, 94, 0.04) 100%);
    border-color: rgba(244, 63, 94, 0.25);
    color: #fb7185;
    box-shadow: 0 0 10px rgba(244, 63, 94, 0.08);
}

/* Premium Segmented Toggle Container */
.canvas-toggle-container {
    display: flex;
    background: rgba(10, 12, 16, 0.6);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 50px;
    padding: 3px;
    gap: 2px;
    box-shadow: inset 0 2px 4px rgba(0, 0, 0, 0.4);
}

/* Segmented Buttons */
.btn-toggle-canvas {
    background: none;
    border: none;
    color: var(--text-secondary);
    padding: 6px 14px;
    border-radius: 50px;
    font-size: 11.5px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
    font-family: var(--font-body);
}

.btn-toggle-canvas:hover {
    color: var(--text-main);
    background: rgba(255, 255, 255, 0.03);
}

.btn-toggle-canvas.active {
    background: linear-gradient(135deg, var(--accent-purple) 0%, #4f46e5 100%);
    color: #ffffff;
    box-shadow: 0 2px 10px rgba(99, 102, 241, 0.35);
}

/* --- COHORT SUBPART BREAKDOWN STYLING --- */

/* Subpart text badges */
.subpart-badge-percentage {
    text-transform: uppercase;
    font-size: 10px;
    letter-spacing: 0.05em;
    padding: 2px 6px;
    border-radius: 4px;
    border: 1px solid rgba(255, 255, 255, 0.06);
}

.subpart-badge-percentage.diff-easy {
    background: rgba(16, 185, 129, 0.08);
    border-color: rgba(16, 185, 129, 0.18);
    color: #34d399;
}

.subpart-badge-percentage.diff-medium {
    background: rgba(245, 158, 11, 0.08);
    border-color: rgba(245, 158, 11, 0.18);
    color: #fbbf24;
}

.subpart-badge-percentage.diff-hard {
    background: rgba(244, 63, 94, 0.08);
    border-color: rgba(244, 63, 94, 0.18);
    color: #fb7185;
}

/* Subpart neon glow progress fills */
.diff-easy-fill {
    background: linear-gradient(90deg, #10b981 0%, #34d399 100%);
    box-shadow: 0 0 6px rgba(16, 185, 129, 0.4);
}

.diff-medium-fill {
    background: linear-gradient(90deg, #f59e0b 0%, #fbbf24 100%);
    box-shadow: 0 0 6px rgba(245, 158, 11, 0.4);
}

.diff-hard-fill {
    background: linear-gradient(90deg, #f43f5e 0%, #fb7185 100%);
    box-shadow: 0 0 6px rgba(244, 63, 94, 0.4);
}

/* Floating Cohort Popover Glassmorphic styles */
.cohort-popover {
    position: absolute;
    top: calc(100% + 8px);
    right: 0;
    width: 290px;
    z-index: 1000; /* Ensure it floats over visual page canvas and sidebar */
    background: rgba(15, 20, 28, 0.95);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: var(--radius-md);
    padding: 16px;
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.75), 0 0 20px rgba(99, 102, 241, 0.15);
    cursor: default;
    text-align: left;
    pointer-events: auto;
    animation: popoverFadeIn 0.22s cubic-bezier(0.16, 1, 0.3, 1);
}

/* Ensure no text-transform or other properties from parent badge-difficulty are inherited */
.cohort-popover h4 {
    font-size: 11px;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    margin: 0 0 4px 0;
    color: var(--text-main);
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    padding-bottom: 8px;
    font-family: var(--font-heading);
    font-weight: 700;
}

@keyframes popoverFadeIn {
    from {
        opacity: 0;
        transform: translateY(-8px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}



/* ============================================
   COLLAPSIBLE LEFT NAVIGATION SIDEBAR
   ============================================ */

/* Sidebar toggle button */
.btn-sidebar-toggle {
    margin-left: auto;
    background: none;
    border: 1px solid rgba(255,255,255,0.08);
    border-radius: var(--radius-sm);
    color: var(--text-muted);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 4px 5px;
    transition: all 0.2s ease;
    flex-shrink: 0;
}
.btn-sidebar-toggle:hover {
    color: var(--text-main);
    border-color: rgba(99,102,241,0.3);
    background: rgba(99,102,241,0.06);
}

/* Collapsed sidebar state */
#app.sidebar-collapsed {
    grid-template-columns: 52px 1fr;
}

.sidebar.collapsed {
    padding: 12px 8px;
    align-items: center;
}

.sidebar.collapsed .brand {
    padding: 4px 0 10px;
    gap: 0;
    justify-content: center;
}

.sidebar.collapsed .sidebar-title {
    display: none;
}

.sidebar.collapsed .btn-sidebar-toggle svg {
    transform: rotate(180deg);
}

.sidebar.collapsed .nav-item span {
    display: none;
}

.sidebar.collapsed .nav-item {
    justify-content: center;
    padding: 9px;
    border-radius: var(--radius-sm);
}

.sidebar.collapsed .nav-item:hover {
    padding-left: 9px;
}

.sidebar.collapsed .nav-item.active {
    padding-left: 9px;
    border-left: none;
    border-bottom: 2px solid var(--accent-purple);
}

.sidebar.collapsed .sidebar-footer {
    width: 100%;
}

.sidebar.collapsed .user-status {
    justify-content: center;
    padding: 7px;
}

.sidebar.collapsed .user-status span:not(.status-indicator) {
    display: none;
}

/* Worksheet nav badge count */
.nav-ws-count {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 16px;
    height: 16px;
    padding: 0 4px;
    background: var(--accent-purple);
    color: #fff;
    font-size: 9px;
    font-weight: 700;
    border-radius: 50px;
    font-family: var(--font-heading);
    vertical-align: middle;
    margin-left: 2px;
}

/* ============================================
   COMPACT TAGS + CLASS SEEN BAR
   ============================================ */

.tagger-compact-bar {
    display: flex;
    flex-direction: column;
    gap: 6px;
    border-top: 1px solid var(--border-color);
    padding-top: 8px;
    margin-top: 2px;
}

/* Row 1: active tags + inline input + class seen */
.tagger-tags-row {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 6px;
}

.tagger-tags-row .active-tags-list {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    min-height: 0;
    flex: 1;
}

/* Compact inline tag input */
.tag-input-wrapper.compact-input {
    display: flex;
    gap: 4px;
    max-width: 200px;
    flex-shrink: 0;
}
.tag-input-wrapper.compact-input .custom-tag-input {
    padding: 4px 8px;
    font-size: 11px;
}
.tag-input-wrapper.compact-input .btn.btn-primary {
    padding: 0 7px;
    min-height: 26px;
}

/* Class Seen inline section */
.class-seen-inline {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 6px;
    border-left: 1px solid var(--border-color);
    padding-left: 10px;
    flex-shrink: 0;
}

/* Row 2: horizontal scrollable suggestions */
.suggestions-strip {
    display: flex;
    gap: 5px;
    overflow-x: auto;
    scrollbar-width: none;  /* Firefox */
    padding-bottom: 2px;
}
.suggestions-strip::-webkit-scrollbar {
    display: none;
}
.suggestions-strip .btn-tag-suggest {
    flex-shrink: 0;
    font-size: 10px;
    padding: 2px 7px;
}