:root {
    --primary: #4f46e5;
    --primary-hover: #4338ca;
    --primary-light: #eef2ff;
    --success: #059669;
    --success-light: #ecfdf5;
    --warning: #d97706;
    --warning-light: #fffbeb;
    --danger: #dc2626;
    --danger-light: #fef2f2;
    --gray-50: #f9fafb;
    --gray-100: #f3f4f6;
    --gray-200: #e5e7eb;
    --gray-300: #d1d5db;
    --gray-400: #9ca3af;
    --gray-500: #6b7280;
    --gray-600: #4b5563;
    --gray-700: #374151;
    --gray-800: #1f2937;
    --gray-900: #111827;
    --radius: 8px;
    --shadow: 0 1px 3px rgba(0,0,0,0.1), 0 1px 2px rgba(0,0,0,0.06);
    --shadow-md: 0 4px 6px rgba(0,0,0,0.07), 0 2px 4px rgba(0,0,0,0.06);
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: var(--gray-50);
    color: var(--gray-800);
    line-height: 1.5;
}

.app-layout {
    display: flex;
    min-height: 100vh;
}

.sidebar {
    width: 240px;
    background: var(--gray-900);
    color: white;
    padding: 0;
    position: fixed;
    top: 0;
    left: 0;
    bottom: 0;
    z-index: 100;
    display: flex;
    flex-direction: column;
}

.sidebar-logo {
    padding: 20px 20px;
    border-bottom: 1px solid var(--gray-700);
    font-size: 18px;
    font-weight: 700;
    letter-spacing: -0.5px;
    color: white;
    text-decoration: none;
    display: block;
}

.sidebar-logo span {
    color: var(--primary);
}

.sidebar-nav {
    padding: 12px 8px;
    flex: 1;
}

.sidebar-nav a {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 14px;
    color: var(--gray-300);
    text-decoration: none;
    border-radius: 6px;
    font-size: 14px;
    transition: all 0.15s;
    margin-bottom: 2px;
}

.sidebar-nav a:hover {
    background: var(--gray-700);
    color: white;
}

.sidebar-nav a.active {
    background: var(--primary);
    color: white;
}

.sidebar-nav a svg {
    width: 18px;
    height: 18px;
    flex-shrink: 0;
}

.sidebar-footer {
    padding: 12px 8px;
    border-top: 1px solid var(--gray-700);
}

.sidebar-footer .user-info {
    padding: 8px 14px;
    font-size: 13px;
    color: var(--gray-400);
}

.sidebar-footer .user-info strong {
    color: white;
    display: block;
    font-size: 14px;
}

.main-content {
    margin-left: 240px;
    flex: 1;
    padding: 32px;
    max-width: 1200px;
}

.page-header {
    margin-bottom: 28px;
}

.page-header h1 {
    font-size: 24px;
    font-weight: 700;
    color: var(--gray-900);
}

.page-header p {
    color: var(--gray-500);
    margin-top: 4px;
    font-size: 14px;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 16px;
    margin-bottom: 28px;
}

.stat-card {
    background: white;
    border-radius: var(--radius);
    padding: 20px;
    box-shadow: var(--shadow);
    border: 1px solid var(--gray-200);
}

.stat-card .stat-label {
    font-size: 13px;
    color: var(--gray-500);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    font-weight: 500;
}

.stat-card .stat-value {
    font-size: 28px;
    font-weight: 700;
    color: var(--gray-900);
    margin-top: 4px;
}

.stat-card.primary { border-left: 3px solid var(--primary); }
.stat-card.success { border-left: 3px solid var(--success); }
.stat-card.warning { border-left: 3px solid var(--warning); }
.stat-card.danger { border-left: 3px solid var(--danger); }

.card {
    background: white;
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    border: 1px solid var(--gray-200);
    margin-bottom: 20px;
}

.card-header {
    padding: 16px 20px;
    border-bottom: 1px solid var(--gray-200);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.card-header h2 {
    font-size: 16px;
    font-weight: 600;
}

.card-body {
    padding: 20px;
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 8px 16px;
    border-radius: 6px;
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    border: 1px solid transparent;
    transition: all 0.15s;
    text-decoration: none;
}

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

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

.btn-primary:disabled {
    background: var(--gray-300);
    cursor: not-allowed;
}

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

.btn-success:hover { background: #047857; }

.btn-outline {
    background: white;
    color: var(--gray-700);
    border-color: var(--gray-300);
}

.btn-outline:hover { background: var(--gray-50); border-color: var(--gray-400); }

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

.btn-sm {
    padding: 5px 10px;
    font-size: 13px;
}

.btn-lg {
    padding: 12px 24px;
    font-size: 16px;
}

.form-group {
    margin-bottom: 16px;
}

.form-group label {
    display: block;
    font-size: 14px;
    font-weight: 500;
    color: var(--gray-700);
    margin-bottom: 4px;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 8px 12px;
    border: 1px solid var(--gray-300);
    border-radius: 6px;
    font-size: 14px;
    transition: border-color 0.15s;
    background: white;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.1);
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
}

.tabs {
    display: flex;
    border-bottom: 2px solid var(--gray-200);
    margin-bottom: 20px;
}

.tab {
    padding: 10px 20px;
    cursor: pointer;
    font-size: 14px;
    font-weight: 500;
    color: var(--gray-500);
    border-bottom: 2px solid transparent;
    margin-bottom: -2px;
    transition: all 0.15s;
}

.tab:hover { color: var(--gray-700); }

.tab.active {
    color: var(--primary);
    border-bottom-color: var(--primary);
}

.tab-content { display: none; }
.tab-content.active { display: block; }

.file-upload {
    border: 2px dashed var(--gray-300);
    border-radius: var(--radius);
    padding: 40px;
    text-align: center;
    cursor: pointer;
    transition: all 0.15s;
    background: var(--gray-50);
}

.file-upload:hover {
    border-color: var(--primary);
    background: var(--primary-light);
}

.file-upload.dragover {
    border-color: var(--primary);
    background: var(--primary-light);
}

.file-upload p { color: var(--gray-500); margin-top: 8px; font-size: 14px; }

.file-upload .file-name {
    margin-top: 8px;
    font-weight: 600;
    color: var(--primary);
}

.data-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 13px;
}

.data-table th {
    text-align: left;
    padding: 10px 12px;
    background: var(--gray-50);
    border-bottom: 2px solid var(--gray-200);
    font-weight: 600;
    color: var(--gray-600);
    font-size: 12px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    white-space: nowrap;
}

.data-table td {
    padding: 10px 12px;
    border-bottom: 1px solid var(--gray-100);
    max-width: 200px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.data-table tr:hover td { background: var(--gray-50); }

.badge {
    display: inline-block;
    padding: 2px 8px;
    border-radius: 12px;
    font-size: 12px;
    font-weight: 500;
}

.badge-success { background: var(--success-light); color: var(--success); }
.badge-warning { background: var(--warning-light); color: var(--warning); }
.badge-danger { background: var(--danger-light); color: var(--danger); }
.badge-primary { background: var(--primary-light); color: var(--primary); }

.progress-bar-container {
    width: 100%;
    height: 8px;
    background: var(--gray-200);
    border-radius: 4px;
    overflow: hidden;
    margin: 12px 0;
}

.progress-bar {
    height: 100%;
    background: var(--primary);
    border-radius: 4px;
    transition: width 0.3s ease;
}

.enrichment-status {
    padding: 20px;
    border-radius: var(--radius);
    margin-bottom: 20px;
}

.enrichment-status.running { background: var(--primary-light); border: 1px solid var(--primary); }
.enrichment-status.completed { background: var(--success-light); border: 1px solid var(--success); }
.enrichment-status.failed { background: var(--danger-light); border: 1px solid var(--danger); }

.search-bar {
    display: flex;
    gap: 12px;
    margin-bottom: 20px;
}

.search-bar input {
    flex: 1;
    padding: 8px 12px;
    border: 1px solid var(--gray-300);
    border-radius: 6px;
    font-size: 14px;
}

.search-bar input:focus {
    outline: none;
    border-color: var(--primary);
}

.pagination {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    margin-top: 20px;
}

.pagination button {
    padding: 6px 12px;
    border: 1px solid var(--gray-300);
    background: white;
    border-radius: 6px;
    cursor: pointer;
    font-size: 13px;
}

.pagination button:hover { background: var(--gray-50); }
.pagination button:disabled { opacity: 0.5; cursor: not-allowed; }
.pagination .page-info { font-size: 13px; color: var(--gray-500); }

.alert {
    padding: 12px 16px;
    border-radius: 6px;
    margin-bottom: 16px;
    font-size: 14px;
}

.alert-success { background: var(--success-light); color: var(--success); border: 1px solid #a7f3d0; }
.alert-danger { background: var(--danger-light); color: var(--danger); border: 1px solid #fecaca; }
.alert-info { background: var(--primary-light); color: var(--primary); border: 1px solid #c7d2fe; }

.empty-state {
    text-align: center;
    padding: 60px 20px;
    color: var(--gray-400);
}

.empty-state svg { width: 48px; height: 48px; margin-bottom: 12px; }
.empty-state p { font-size: 15px; }

.login-container {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    background: var(--gray-100);
}

.login-card {
    background: white;
    border-radius: var(--radius);
    box-shadow: var(--shadow-md);
    padding: 40px;
    width: 100%;
    max-width: 400px;
}

.login-card h1 {
    font-size: 24px;
    margin-bottom: 8px;
    text-align: center;
}

.login-card p {
    color: var(--gray-500);
    text-align: center;
    margin-bottom: 24px;
    font-size: 14px;
}

.quick-actions {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 16px;
    margin-bottom: 28px;
}

.quick-action {
    background: white;
    border: 1px solid var(--gray-200);
    border-radius: var(--radius);
    padding: 20px;
    text-decoration: none;
    color: var(--gray-800);
    transition: all 0.15s;
    display: flex;
    align-items: center;
    gap: 14px;
}

.quick-action:hover {
    box-shadow: var(--shadow-md);
    border-color: var(--primary);
}

.quick-action .icon {
    width: 44px;
    height: 44px;
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.quick-action .icon.blue { background: var(--primary-light); color: var(--primary); }
.quick-action .icon.green { background: var(--success-light); color: var(--success); }
.quick-action .icon.orange { background: var(--warning-light); color: var(--warning); }

.quick-action h3 { font-size: 15px; font-weight: 600; }
.quick-action p { font-size: 13px; color: var(--gray-500); margin-top: 2px; }

.table-wrapper {
    overflow-x: auto;
}

.spinner {
    width: 20px;
    height: 20px;
    border: 2px solid var(--gray-200);
    border-top-color: var(--primary);
    border-radius: 50%;
    animation: spin 0.6s linear infinite;
    display: inline-block;
}

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

.hidden { display: none !important; }

@media (max-width: 768px) {
    .sidebar { width: 60px; }
    .sidebar-logo span, .sidebar-nav a span, .sidebar-footer { display: none; }
    .main-content { margin-left: 60px; padding: 16px; }
    .form-row { grid-template-columns: 1fr; }
    .stats-grid { grid-template-columns: 1fr 1fr; }
}