/* ==========================================================================
   xlable - Premium CSS Styling System
   ========================================================================== */

:root {
    --bg-primary: #0b0f19;
    --bg-secondary: #131a2b;
    --bg-tertiary: #1b243b;
    --border-color: rgba(255, 255, 255, 0.08);
    --border-focus: rgba(59, 130, 246, 0.5);
    
    --text-primary: #f8fafc;
    --text-secondary: #94a3b8;
    --text-muted: #64748b;
    
    --accent-blue: #3b82f6;
    --accent-blue-hover: #2563eb;
    --accent-cyan: #06b6d4;
    --accent-green: #10b981;
    --accent-red: #ef4444;
    --accent-red-hover: #dc2626;
    --accent-warning: #f59e0b;
    
    --glass-bg: rgba(19, 26, 43, 0.7);
    --glass-border: rgba(255, 255, 255, 0.06);
    --glass-shadow: rgba(0, 0, 0, 0.4);
    
    --font-sans: 'Outfit', 'Segoe UI', system-ui, -apple-system, sans-serif;
    --font-mono: 'JetBrains Mono', monospace;
    
    --border-radius-sm: 6px;
    --border-radius-md: 10px;
    --border-radius-lg: 16px;
    
    --transition-fast: 0.15s ease;
    --transition-normal: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

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

body {
    background-color: var(--bg-primary);
    color: var(--text-primary);
    font-family: var(--font-sans);
    line-height: 1.5;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* Scrollbar Styles */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}
::-webkit-scrollbar-track {
    background: var(--bg-primary);
}
::-webkit-scrollbar-thumb {
    background: var(--bg-tertiary);
    border-radius: 4px;
}
::-webkit-scrollbar-thumb:hover {
    background: var(--text-muted);
}

/* Typography Helpers */
h1, h2, h3, h4, h5, h6 {
    font-weight: 600;
    letter-spacing: -0.02em;
}

a {
    color: var(--accent-blue);
    text-decoration: none;
    transition: color var(--transition-fast);
}
a:hover {
    color: var(--accent-cyan);
}

/* Glassmorphism Panel Wrapper */
.glass-panel {
    background: var(--glass-bg);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: 1px solid var(--glass-border);
    box-shadow: 0 10px 30px var(--glass-shadow);
    border-radius: var(--border-radius-lg);
}

/* Navbar */
.glass-nav {
    background: rgba(11, 15, 25, 0.85);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border-color);
    position: sticky;
    top: 0;
    z-index: 100;
    height: 65px;
}

.nav-container {
    max-width: 1400px;
    margin: 0 auto;
    height: 100%;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 24px;
}

.brand {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
}

.brand-icon {
    background: linear-gradient(135deg, var(--accent-blue), var(--accent-cyan));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.brand-text span {
    color: var(--accent-cyan);
}

.nav-actions {
    display: flex;
    align-items: center;
    gap: 15px;
}

.user-greeting {
    color: var(--text-secondary);
    font-size: 0.95rem;
    font-weight: 500;
    display: flex;
    align-items: center;
    gap: 6px;
}

.nav-btn {
    padding: 8px 16px;
    border-radius: var(--border-radius-sm);
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--text-secondary);
    background: transparent;
    border: 1px solid transparent;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 6px;
    transition: all var(--transition-fast);
}

.nav-btn:hover {
    color: var(--text-primary);
    background: var(--bg-tertiary);
}

.nav-btn.primary-btn {
    background: var(--accent-blue);
    color: var(--text-primary);
}

.nav-btn.primary-btn:hover {
    background: var(--accent-blue-hover);
}

.logout-form {
    display: inline;
}

.logout-btn:hover {
    background: rgba(239, 68, 68, 0.15) !important;
    color: var(--accent-red) !important;
    border-color: rgba(239, 68, 68, 0.2);
}

/* Footer */
.glass-footer {
    background: var(--bg-primary);
    border-top: 1px solid var(--border-color);
    padding: 12px 24px;
    text-align: center;
    color: var(--text-muted);
    font-size: 0.85rem;
    margin-top: auto;
    height: 45px;
}

/* Alert Messages */
.alerts-container {
    max-width: 1400px;
    margin: 15px auto 0 auto;
    padding: 0 24px;
}

.alert {
    padding: 12px 20px;
    border-radius: var(--border-radius-md);
    margin-bottom: 12px;
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 0.95rem;
    position: relative;
    border: 1px solid transparent;
    animation: slideDown 0.3s ease;
}

.alert.success {
    background: rgba(16, 185, 129, 0.1);
    border-color: rgba(16, 185, 129, 0.2);
    color: var(--accent-green);
}

.alert.error {
    background: rgba(239, 68, 68, 0.1);
    border-color: rgba(239, 68, 68, 0.2);
    color: var(--accent-red);
}

.alert.info {
    background: rgba(59, 130, 246, 0.1);
    border-color: rgba(59, 130, 246, 0.2);
    color: var(--accent-blue);
}

.alert-close {
    background: transparent;
    border: none;
    color: inherit;
    font-size: 1.3rem;
    cursor: pointer;
    margin-left: auto;
    opacity: 0.7;
}

.alert-close:hover {
    opacity: 1;
}

/* Main Content Container */
.main-content {
    max-width: 1400px;
    width: 100%;
    margin: 0 auto;
    padding: 24px;
    flex-grow: 1;
}

/* Forms & Inputs */
.form-group {
    margin-bottom: 16px;
}

.form-group label {
    display: block;
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--text-secondary);
    margin-bottom: 6px;
}

.form-control {
    width: 100%;
    padding: 10px 14px;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-sm);
    color: var(--text-primary);
    font-family: inherit;
    font-size: 0.95rem;
    transition: all var(--transition-fast);
}

.form-control:focus {
    outline: none;
    border-color: var(--accent-blue);
    box-shadow: 0 0 0 3px var(--border-focus);
}

.form-help-text {
    display: block;
    font-size: 0.8rem;
    color: var(--text-muted);
    margin-top: 4px;
}

.required {
    color: var(--accent-red);
}

/* Auth Pages Styling */
.auth-wrapper {
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 40px 0;
    min-height: calc(100vh - 180px);
}

.auth-card {
    width: 100%;
    max-width: 440px;
    padding: 36px;
}

.auth-title {
    font-size: 1.8rem;
    text-align: center;
    margin-bottom: 6px;
    font-weight: 700;
}

.auth-subtitle {
    font-size: 0.95rem;
    color: var(--text-secondary);
    text-align: center;
    margin-bottom: 28px;
}

.auth-errors {
    background: rgba(239, 68, 68, 0.1);
    border: 1px solid rgba(239, 68, 68, 0.2);
    color: var(--accent-red);
    padding: 12px;
    border-radius: var(--border-radius-sm);
    margin-bottom: 20px;
    font-size: 0.85rem;
}

.auth-errors ul {
    margin-left: 20px;
    margin-top: 6px;
}

.auth-submit-btn {
    width: 100%;
    padding: 12px;
    background: var(--accent-blue);
    color: var(--text-primary);
    border: none;
    border-radius: var(--border-radius-sm);
    font-weight: 600;
    font-size: 1rem;
    cursor: pointer;
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 8px;
    transition: background-color var(--transition-fast);
    margin-top: 24px;
}

.auth-submit-btn:hover {
    background: var(--accent-blue-hover);
}

.auth-footer {
    text-align: center;
    margin-top: 20px;
    font-size: 0.9rem;
    color: var(--text-secondary);
}

/* Dashboard Home */
.dashboard-header-section {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 30px;
}

.dashboard-title {
    font-size: 2.2rem;
    font-weight: 700;
}

.dashboard-subtitle {
    color: var(--text-secondary);
}

.action-button {
    padding: 10px 20px;
    border-radius: var(--border-radius-sm);
    font-size: 0.95rem;
    font-weight: 600;
    border: none;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    transition: all var(--transition-fast);
}

.primary-action-btn {
    background: var(--accent-blue);
    color: var(--text-primary);
}
.primary-action-btn:hover {
    background: var(--accent-blue-hover);
}

.secondary-action-btn {
    background: var(--bg-tertiary);
    color: var(--text-secondary);
    border: 1px solid var(--border-color);
}
.secondary-action-btn:hover {
    color: var(--text-primary);
    background: rgba(255, 255, 255, 0.05);
}

.accent-action-btn {
    background: linear-gradient(135deg, var(--accent-blue), var(--accent-cyan));
    color: var(--text-primary);
}
.accent-action-btn:hover {
    opacity: 0.9;
}

.delete-action-btn {
    background: rgba(239, 68, 68, 0.15);
    color: var(--accent-red);
    border: 1px solid rgba(239, 68, 68, 0.2);
}
.delete-action-btn:hover {
    background: var(--accent-red);
    color: white;
}

/* Projects grid */
.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(360px, 1fr));
    gap: 24px;
}

.project-card {
    padding: 24px;
    display: flex;
    flex-direction: column;
    min-height: 280px;
}

.hover-card {
    transition: transform var(--transition-normal), border-color var(--transition-fast);
}
.hover-card:hover {
    transform: translateY(-4px);
    border-color: rgba(255, 255, 255, 0.12);
}

.project-card-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 12px;
}

.project-name {
    font-size: 1.25rem;
    font-weight: 600;
}

.project-date {
    font-size: 0.8rem;
    color: var(--text-muted);
}

.project-desc {
    font-size: 0.9rem;
    color: var(--text-secondary);
    margin-bottom: 16px;
    flex-grow: 1;
}

.project-classes-info {
    margin-bottom: 16px;
}

.class-label {
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--text-muted);
    text-transform: uppercase;
    display: block;
    margin-bottom: 6px;
}

.class-tags-container {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
}

.class-tag {
    font-size: 0.75rem;
    background: var(--bg-tertiary);
    color: var(--text-secondary);
    padding: 2px 8px;
    border-radius: 4px;
    border: 1px solid var(--border-color);
}

.project-stats-progress {
    margin-bottom: 20px;
}

.stats-numbers {
    display: flex;
    justify-content: space-between;
    font-size: 0.85rem;
    color: var(--text-secondary);
    margin-bottom: 6px;
}

.progress-bar-bg {
    width: 100%;
    height: 6px;
    background: var(--bg-secondary);
    border-radius: 3px;
    overflow: hidden;
}

.progress-bar-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--accent-blue), var(--accent-cyan));
    border-radius: 3px;
}

.project-card-actions {
    display: flex;
    gap: 10px;
    margin-top: auto;
}

.card-btn {
    padding: 8px 12px;
    border-radius: var(--border-radius-sm);
    font-size: 0.85rem;
    font-weight: 600;
    border: none;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    gap: 6px;
    transition: all var(--transition-fast);
}

.card-btn.primary-btn {
    background: var(--accent-blue);
    color: white;
}
.card-btn.primary-btn.disabled {
    background: var(--bg-tertiary);
    color: var(--text-muted);
    cursor: not-allowed;
}

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

.card-btn.settings-btn {
    background: transparent;
    color: var(--text-muted);
    border: 1px solid transparent;
}
.card-btn.settings-btn:hover {
    background: rgba(255, 255, 255, 0.08);
    color: var(--text-primary);
    border-color: var(--border-color);
}

.card-btn.delete-btn {
    background: transparent;
    color: var(--text-muted);
    border: 1px solid transparent;
}
.card-btn.delete-btn:hover {
    background: rgba(239, 68, 68, 0.15);
    color: var(--accent-red);
    border-color: rgba(239, 68, 68, 0.1);
}

.inline-delete-form {
    margin-left: auto;
}

/* Empty State */
.empty-state {
    grid-column: 1 / -1;
    padding: 60px;
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    gap: 16px;
}

.empty-icon {
    font-size: 3.5rem;
    color: var(--text-muted);
}

.empty-state h3 {
    font-size: 1.5rem;
}

.empty-state p {
    color: var(--text-secondary);
    max-width: 400px;
    margin-bottom: 10px;
}

/* Modals */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(4px);
    display: none;
    justify-content: center;
    align-items: center;
    z-index: 200;
}

.modal-content {
    width: 100%;
    max-width: 500px;
    padding: 28px;
    border-radius: var(--border-radius-lg);
}

.animated-modal {
    animation: modalSlideUp var(--transition-normal);
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
}

.modal-header h3 {
    font-size: 1.3rem;
    display: flex;
    align-items: center;
    gap: 8px;
}

.close-modal {
    font-size: 1.5rem;
    color: var(--text-muted);
    cursor: pointer;
    transition: color var(--transition-fast);
}
.close-modal:hover {
    color: var(--text-primary);
}

.modal-footer {
    display: flex;
    justify-content: flex-end;
    gap: 12px;
    margin-top: 24px;
}

/* Detail View Layout */
.breadcrumb-nav {
    margin-bottom: 20px;
}
.back-link {
    font-size: 0.95rem;
    font-weight: 500;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    color: var(--text-secondary);
}
.back-link:hover {
    color: var(--text-primary);
}

.project-detail-layout {
    display: grid;
    grid-template-columns: 360px 1fr;
    gap: 24px;
    align-items: start;
}

.project-side-col {
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.card {
    padding: 20px;
}

.card-title {
    font-size: 1.1rem;
    margin-bottom: 16px;
    display: flex;
    align-items: center;
    gap: 8px;
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 10px;
}

.card-header-flex {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 16px;
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 10px;
}
.card-header-flex .card-title {
    border-bottom: none;
    padding-bottom: 0;
    margin-bottom: 0;
}

.mini-edit-btn {
    background: transparent;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
    font-size: 1rem;
    transition: color var(--transition-fast);
}
.mini-edit-btn:hover {
    color: var(--accent-blue);
}

.side-proj-name {
    font-size: 1.3rem;
    margin-bottom: 8px;
}
.side-proj-desc {
    font-size: 0.88rem;
    color: var(--text-secondary);
    margin-bottom: 20px;
}

.stats-list {
    margin-bottom: 20px;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.stats-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: var(--bg-secondary);
    padding: 8px 14px;
    border-radius: var(--border-radius-sm);
    font-size: 0.9rem;
}

.stat-label {
    color: var(--text-secondary);
}
.stat-val {
    font-weight: 700;
}

.success-text {
    color: var(--accent-green);
}
.warning-text {
    color: var(--accent-warning);
}

.classes-list-wrap {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.class-badge {
    background: var(--bg-secondary);
    padding: 6px 12px;
    border-radius: 4px;
    font-size: 0.85rem;
    border: 1px solid var(--border-color);
    font-weight: 500;
}

/* Upload Forms Tab */
.upload-tabs {
    display: flex;
    background: var(--bg-secondary);
    border-radius: var(--border-radius-sm);
    padding: 4px;
    margin-bottom: 16px;
    border: 1px solid var(--border-color);
}

.upload-tab-btn {
    flex: 1;
    text-align: center;
    padding: 6px;
    border-radius: 4px;
    font-size: 0.85rem;
    cursor: pointer;
    color: var(--text-secondary);
    font-weight: 500;
    transition: all var(--transition-fast);
}

.upload-tab-btn.active {
    background: var(--bg-tertiary);
    color: var(--text-primary);
    box-shadow: 0 2px 6px rgba(0,0,0,0.2);
}

.file-input-style {
    background: var(--bg-secondary) !important;
}

.json-upload-wrap {
    margin-top: 16px;
    padding-top: 16px;
    border-top: 1px dashed var(--border-color);
}

.w-100 { width: 100%; }
.text-center { text-align: center; }
.block-link { display: block; }
.mt-2 { margin-top: 8px; }

/* Exports panel */
.form-row {
    display: flex;
    gap: 12px;
}
.col-6 { flex: 0 0 calc(50% - 6px); }

.split-controls {
    display: flex;
    justify-content: space-between;
    gap: 8px;
    background: var(--bg-secondary);
    padding: 10px;
    border-radius: var(--border-radius-sm);
    border: 1px solid var(--border-color);
}

.split-input-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    font-size: 0.8rem;
    color: var(--text-secondary);
    gap: 4px;
}
.split-input-item input {
    width: 50px;
    padding: 4px;
    font-size: 0.85rem;
    font-weight: 700;
}

.export-loading-panel {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 20px 0;
    gap: 12px;
    text-align: center;
}

.spinner {
    width: 36px;
    height: 36px;
    border: 3px solid rgba(59, 130, 246, 0.2);
    border-top: 3px solid var(--accent-blue);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

/* Right Main Gallery pane */
.project-main-col {
    padding: 24px;
    max-height: 1760px;
    overflow-y: auto;
}

/* Custom scrollbar for project-main-col */
.project-main-col::-webkit-scrollbar {
    width: 6px;
}
.project-main-col::-webkit-scrollbar-track {
    background: transparent;
}
.project-main-col::-webkit-scrollbar-thumb {
    background: var(--border-color);
    border-radius: 3px;
}
.project-main-col::-webkit-scrollbar-thumb:hover {
    background: var(--text-muted);
}

.image-gallery-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
    gap: 16px;
    margin-top: 20px;
}

.gallery-card {
    position: relative;
    aspect-ratio: 1;
    background: var(--bg-secondary);
    border-radius: var(--border-radius-md);
    overflow: hidden;
    border: 2px solid transparent;
    transition: transform var(--transition-fast), border-color var(--transition-fast);
}

.gallery-card:hover {
    transform: scale(1.03);
}

.labeled-border {
    border-color: rgba(16, 185, 129, 0.2);
}
.labeled-border:hover {
    border-color: var(--accent-green);
}

.unlabeled-border {
    border-color: rgba(255, 255, 255, 0.04);
}
.unlabeled-border:hover {
    border-color: var(--text-muted);
}

.gallery-img-link {
    display: block;
    width: 100%;
    height: 100%;
}

.gallery-thumbnail {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.gallery-card-hover-info {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    background: linear-gradient(transparent, rgba(11, 15, 25, 0.95) 70%);
    padding: 20px 10px 8px 10px;
    display: flex;
    flex-direction: column;
    opacity: 0;
    pointer-events: none;
    transition: opacity var(--transition-fast);
}

.gallery-card:hover .gallery-card-hover-info {
    opacity: 1;
}

.img-name {
    font-size: 0.75rem;
    font-weight: 500;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.img-meta-tags {
    display: flex;
    gap: 4px;
    margin-top: 4px;
}

.tag-meta {
    font-size: 0.65rem;
    padding: 1px 4px;
    border-radius: 2px;
}
.size-tag {
    background: var(--bg-tertiary);
    color: var(--text-secondary);
}
.boxes-tag {
    background: rgba(59, 130, 246, 0.2);
    color: var(--accent-cyan);
}

.label-status-badge {
    position: absolute;
    top: 8px;
    left: 8px;
    font-size: 0.65rem;
    font-weight: 700;
    padding: 2px 6px;
    border-radius: 4px;
    text-transform: uppercase;
}

.labeled-bg {
    background: var(--accent-green);
    color: white;
}
.unlabeled-bg {
    background: var(--bg-tertiary);
    color: var(--text-secondary);
}

.delete-img-btn {
    position: absolute;
    top: 8px;
    right: 8px;
    background: rgba(11, 15, 25, 0.8);
    border: 1px solid rgba(255,255,255,0.06);
    color: var(--text-muted);
    border-radius: 4px;
    width: 24px;
    height: 24px;
    display: flex;
    justify-content: center;
    align-items: center;
    cursor: pointer;
    font-size: 0.75rem;
    opacity: 0;
    transition: all var(--transition-fast);
}

.gallery-card:hover .delete-img-btn {
    opacity: 1;
}
.delete-img-btn:hover {
    background: var(--accent-red);
    color: white;
    border-color: transparent;
}

.gallery-empty-state {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    height: 300px;
    text-align: center;
    color: var(--text-secondary);
    gap: 12px;
}

.gallery-empty-icon {
    font-size: 3rem;
    color: var(--text-muted);
}

/* ==========================================================================
   Interactive Labeling Workspace Layout
   ========================================================================== */

.labeler-workspace {
    display: grid;
    grid-template-columns: 280px 1fr 300px;
    height: 100%;
}

/* Left Sidebar - Files List */
.labeler-sidebar-left {
    border-radius: 0;
    border-top: none;
    border-bottom: none;
    border-left: none;
    display: flex;
    flex-direction: column;
    height: 100%;
    min-height: 0;
}

.sidebar-header {
    padding: 16px;
    border-bottom: 1px solid var(--border-color);
}
.back-project-link {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-secondary);
    display: inline-flex;
    align-items: center;
    gap: 6px;
    margin-bottom: 12px;
}
.back-project-link:hover {
    color: var(--text-primary);
}

.sidebar-images-list {
    flex-grow: 1;
    overflow-y: auto;
    padding: 8px;
}

.sidebar-img-item {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 8px;
    border-radius: var(--border-radius-sm);
    cursor: pointer;
    margin-bottom: 4px;
    border: 1px solid transparent;
    transition: all var(--transition-fast);
}

.sidebar-img-item:hover {
    background: rgba(255, 255, 255, 0.03);
}

.active-img {
    background: rgba(59, 130, 246, 0.08) !important;
    border-color: rgba(59, 130, 246, 0.25) !important;
}

.side-thumb {
    width: 44px;
    height: 44px;
    object-fit: cover;
    border-radius: 4px;
    background: var(--bg-secondary);
}

.side-img-meta {
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

.side-filename {
    font-size: 0.8rem;
    font-weight: 500;
    color: var(--text-primary);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.side-status {
    font-size: 0.72rem;
    color: var(--text-muted);
    display: flex;
    align-items: center;
    gap: 4px;
}

/* Center Canvas Editor Panel */
.labeler-canvas-pane {
    display: flex;
    flex-direction: column;
    background: var(--bg-primary);
    height: 100%;
    min-height: 0;
}

.canvas-top-bar {
    height: 60px;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 20px;
    background: var(--bg-secondary);
}

.canvas-filename-header h3 {
    font-size: 1.05rem;
    font-weight: 600;
}
.canvas-filename-header span {
    font-size: 0.75rem;
}

.canvas-zoom-controls {
    display: flex;
    align-items: center;
    gap: 6px;
}

.canvas-tool-btn {
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
    border-radius: var(--border-radius-sm);
    padding: 6px 10px;
    font-size: 0.85rem;
    font-weight: 500;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 6px;
    transition: all var(--transition-fast);
}

.canvas-tool-btn:hover {
    color: var(--text-primary);
    border-color: var(--text-muted);
}

.active-tool {
    background: var(--accent-blue) !important;
    border-color: transparent !important;
    color: white !important;
}

.tool-divider {
    width: 1px;
    height: 20px;
    background: var(--border-color);
    margin: 0 4px;
}

.canvas-wrapper {
    flex-grow: 1;
    position: relative;
    background: #06080d; /* Pitch dark backgrounds behind image */
    overflow: hidden;
    display: flex;
    justify-content: center;
    align-items: center;
}

#editorCanvas {
    box-shadow: 0 10px 40px rgba(0,0,0,0.6);
    display: block;
    cursor: crosshair;
}

.canvas-keyboard-help {
    position: absolute;
    bottom: 12px;
    left: 12px;
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    background: rgba(11, 15, 25, 0.8);
    backdrop-filter: blur(4px);
    border: 1px solid var(--border-color);
    padding: 6px 12px;
    border-radius: 6px;
    font-size: 0.72rem;
    color: var(--text-secondary);
    pointer-events: none;
}
.canvas-keyboard-help kbd {
    background: var(--bg-tertiary);
    border: 1px solid var(--text-muted);
    border-radius: 3px;
    padding: 1px 4px;
    font-family: inherit;
    font-weight: 700;
    color: var(--text-primary);
}

/* Right Sidebar - Annotations & Classes List */
.labeler-sidebar-right {
    border-radius: 0;
    border-top: none;
    border-bottom: none;
    border-right: none;
    display: flex;
    flex-direction: column;
    height: 100%;
    min-height: 0;
}

.right-sidebar-section {
    padding: 16px;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
}

.flex-grow-section {
    flex-grow: 1;
    overflow: hidden; /* Scroll logic inside container child */
}

.section-title {
    font-size: 0.85rem;
    font-weight: 700;
    text-transform: uppercase;
    color: var(--text-muted);
    margin-bottom: 12px;
    display: flex;
    align-items: center;
    gap: 6px;
}

.class-picker-grid {
    display: flex;
    flex-direction: column;
    gap: 6px;
    max-height: 180px;
    overflow-y: auto;
}

.class-select-btn {
    width: 100%;
    padding: 8px 10px;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-sm);
    color: var(--text-secondary);
    cursor: pointer;
    display: flex;
    align-items: center;
    font-family: inherit;
    font-size: 0.85rem;
    font-weight: 500;
    transition: all var(--transition-fast);
}

.class-select-btn:hover {
    color: var(--text-primary);
    background: var(--bg-tertiary);
}

.selected-class {
    background: var(--bg-tertiary) !important;
    border-color: var(--accent-blue) !important;
    color: var(--text-primary) !important;
    box-shadow: 0 0 0 2px rgba(59, 130, 246, 0.2);
}

.class-color-indicator {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    margin-right: 8px;
    flex-shrink: 0;
}

.class-shortcut-num {
    margin-left: auto;
    font-size: 0.7rem;
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    padding: 1px 4px;
    border-radius: 3px;
    color: var(--text-muted);
}

.selected-class .class-shortcut-num {
    color: var(--accent-cyan);
    border-color: rgba(6, 182, 212, 0.3);
}

/* Annotations List Container */
.annotations-list-container {
    flex-grow: 1;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    gap: 6px;
    padding-right: 4px;
}

.empty-annotations-msg {
    color: var(--text-muted);
    font-size: 0.8rem;
    text-align: center;
    margin-top: 30px;
    font-style: italic;
}

.annotation-item-row {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-sm);
    padding: 8px 10px;
    display: flex;
    align-items: center;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.annotation-item-row:hover {
    background: var(--bg-tertiary);
}

.selected-annot-row {
    border-color: var(--accent-cyan) !important;
    background: rgba(6, 182, 212, 0.05) !important;
}

.annot-color-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    margin-right: 8px;
}

.annot-label-name {
    font-size: 0.8rem;
    font-weight: 500;
    color: var(--text-primary);
}

.annot-coords {
    font-size: 0.7rem;
    color: var(--text-muted);
    font-family: var(--font-mono);
    margin-left: 8px;
}

.annot-item-delete-btn {
    background: transparent;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
    font-size: 0.8rem;
    margin-left: auto;
    width: 22px;
    height: 22px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 4px;
    transition: all var(--transition-fast);
}

.annot-item-delete-btn:hover {
    background: rgba(239, 68, 68, 0.15);
    color: var(--accent-red);
}

/* Actions panel footer */
.right-sidebar-actions {
    padding: 16px;
    margin-top: auto;
    border-top: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.nav-arrow-btns {
    display: flex;
    gap: 8px;
}

.save-label-btn {
    padding: 12px !important;
    font-size: 1rem !important;
}

/* Animations */
@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

@keyframes slideDown {
    from { transform: translateY(-20px); opacity: 0; }
    to { transform: translateY(0); opacity: 1; }
}

@keyframes modalSlideUp {
    from { transform: translateY(30px); opacity: 0; }
    to { transform: translateY(0); opacity: 1; }
}

.auto-label-btn {
    background: linear-gradient(135deg, #8a2be2, #4a00e0) !important;
    color: var(--text-primary) !important;
    border: none !important;
    justify-content: center;
    box-shadow: 0 4px 15px rgba(138, 43, 226, 0.3);
}
.auto-label-btn:hover:not(:disabled) {
    background: linear-gradient(135deg, #9b42f5, #5a10f0) !important;
    box-shadow: 0 4px 20px rgba(138, 43, 226, 0.5);
    transform: translateY(-1px);
}
.auto-label-btn:active:not(:disabled) {
    transform: translateY(0);
}
.auto-label-btn:disabled {
    background: var(--bg-tertiary) !important;
    color: var(--text-muted) !important;
    border: 1px solid var(--border-color) !important;
    box-shadow: none !important;
    cursor: not-allowed;
    opacity: 0.6;
}

#image-index-ratio {
    font-size: 0.85rem !important;
    font-weight: 600;
    color: var(--text-secondary);
    background: rgba(255, 255, 255, 0.08);
    padding: 3px 8px;
    border-radius: 6px;
    margin-left: 10px;
    vertical-align: middle;
    border: 1px solid rgba(255, 255, 255, 0.1);
}

/* Suggestions Dropdown for Project Members Autocomplete */
.suggestions-dropdown {
    position: absolute;
    top: 100%;
    left: 0;
    width: 100%;
    max-height: 200px;
    overflow-y: auto;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-sm);
    z-index: 1000;
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.5);
    margin-top: 4px;
}

.suggestion-item {
    padding: 8px 12px;
    cursor: pointer;
    color: var(--text-primary);
    font-size: 0.9rem;
    transition: background-color var(--transition-fast), color var(--transition-fast);
    display: flex;
    align-items: center;
    gap: 8px;
}

.suggestion-item:hover {
    background-color: var(--bg-tertiary);
    color: var(--accent-cyan);
}

.suggestion-item.active {
    background-color: var(--bg-tertiary);
    color: var(--accent-cyan);
}

/* Image Gallery Header & Management Controls */
.gallery-top-bar {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    align-items: center;
    gap: 16px;
    padding-bottom: 16px;
    border-bottom: 1px solid var(--border-color);
    margin-bottom: 16px;
}

.gallery-controls-wrap {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 14px;
}

.gallery-filter-tabs {
    display: flex;
    background: rgba(15, 23, 42, 0.7);
    border-radius: var(--border-radius-sm);
    padding: 3px;
    border: 1px solid var(--border-color);
    gap: 4px;
}

.filter-tab-btn {
    -webkit-appearance: none;
    appearance: none;
    background: transparent;
    border: 1px solid transparent;
    padding: 6px 14px;
    border-radius: 6px;
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-secondary) !important;
    cursor: pointer;
    transition: all var(--transition-fast);
    display: inline-flex;
    align-items: center;
    gap: 6px;
    outline: none;
}

.filter-tab-btn:hover {
    color: var(--text-primary) !important;
    background: rgba(255, 255, 255, 0.08);
}

.filter-tab-btn.active {
    background: var(--bg-tertiary) !important;
    color: var(--accent-cyan) !important;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
    border: 1px solid rgba(255, 255, 255, 0.12);
}

.gallery-bulk-actions {
    display: flex;
    gap: 8px;
}

.mini-bulk-action-btn {
    -webkit-appearance: none;
    appearance: none;
    background: rgba(15, 23, 42, 0.75);
    border: 1px solid var(--border-color);
    color: var(--text-secondary) !important;
    padding: 6px 12px;
    border-radius: 6px;
    font-size: 0.82rem;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-fast);
    display: inline-flex;
    align-items: center;
    gap: 6px;
    outline: none;
}

.mini-bulk-action-btn:hover {
    background: rgba(30, 41, 59, 0.9);
    color: var(--text-primary) !important;
    border-color: rgba(255, 255, 255, 0.25);
    transform: translateY(-1px);
}

/* Card Labeled Checkbox Control */
.gallery-card-checkbox-label {
    position: absolute;
    top: 8px;
    right: 8px;
    z-index: 10;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    user-select: none;
}

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

.checkbox-custom-btn {
    display: flex;
    align-items: center;
    gap: 5px;
    padding: 4px 8px;
    border-radius: 6px;
    font-size: 0.72rem;
    font-weight: 700;
    background: rgba(15, 23, 42, 0.85);
    backdrop-filter: blur(4px);
    border: 1px solid rgba(255, 255, 255, 0.15);
    color: var(--text-secondary);
    transition: all var(--transition-fast);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.4);
}

.gallery-card-checkbox-label:hover .checkbox-custom-btn {
    transform: scale(1.06);
    border-color: rgba(255, 255, 255, 0.3);
    color: var(--text-primary);
}

.gallery-card-checkbox-input:checked ~ .checkbox-custom-btn {
    background: rgba(16, 185, 129, 0.9);
    border-color: var(--accent-green);
    color: #ffffff;
    box-shadow: 0 0 12px rgba(16, 185, 129, 0.4);
}

.checkbox-icon {
    font-size: 0.75rem;
}

/* Editor Labeled Toggle Control */
.editor-labeled-toggle {
    user-select: none;
}

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

.editor-checkbox-custom-btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 5px 12px;
    border-radius: 6px;
    font-size: 0.82rem;
    font-weight: 700;
    background: rgba(15, 23, 42, 0.7);
    border: 1px solid rgba(255, 255, 255, 0.15);
    color: var(--text-secondary);
    transition: all var(--transition-fast);
    cursor: pointer;
}

.editor-labeled-toggle:hover .editor-checkbox-custom-btn {
    border-color: rgba(255, 255, 255, 0.3);
    color: var(--text-primary);
    transform: translateY(-1px);
}

.editor-checkbox-input:checked ~ .editor-checkbox-custom-btn {
    background: rgba(16, 185, 129, 0.85);
    border-color: var(--accent-green);
    color: #ffffff;
    box-shadow: 0 0 10px rgba(16, 185, 129, 0.35);
}