:root {
    --primary-color: #0d6efd;
    --secondary-color: #6c757d;
    --danger-color: #dc3545;
    --success-color: #198754;
}

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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: #f5f5f5;
}

/* Login Page */
.login-container {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
}

.login-card {
    background: white;
    border-radius: 10px;
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.2);
    padding: 40px;
    width: 100%;
    max-width: 400px;
}

.login-header {
    text-align: center;
    margin-bottom: 30px;
}

.login-header h1 {
    color: var(--primary-color);
    font-weight: 700;
    font-size: 2rem;
    margin-bottom: 10px;
}

.login-header .subtitle {
    color: var(--secondary-color);
    font-size: 0.95rem;
}

.login-card .form-label {
    font-weight: 500;
    color: #333;
    margin-bottom: 8px;
}

.login-card .form-control {
    border: 1px solid #ddd;
    border-radius: 6px;
    padding: 10px 12px;
    font-size: 0.95rem;
}

.login-card .form-control:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 0.2rem rgba(13, 110, 253, 0.25);
}

.login-card .btn-primary {
    padding: 10px;
    font-weight: 500;
    border-radius: 6px;
    margin-top: 10px;
}

.login-card .btn-primary:hover {
    background-color: #0b5ed7;
    border-color: #0b5ed7;
}

/* Dashboard */
.navbar {
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.section-nav {
    gap: 8px;
    flex-wrap: wrap;
}

.section-nav-link {
    border: 1px solid #d9e2ef;
    background-color: #fff;
    color: #344054;
    border-radius: 999px;
    padding: 8px 14px;
    font-weight: 500;
}

.section-nav-link:hover {
    border-color: var(--primary-color);
    color: var(--primary-color);
}

.section-nav-link.active {
    background-color: var(--primary-color);
    border-color: var(--primary-color);
    color: #fff;
}

.card {
    border: none;
    border-radius: 8px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s, box-shadow 0.3s;
}

.card:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

.card-title {
    color: #333;
    font-weight: 600;
}

.dashboard-backend-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 8px 14px;
    align-items: center;
}

.section {
    animation: fadeIn 0.3s ease-in;
}

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

/* Responsive */
@media (max-width: 768px) {
    .login-card {
        margin: 20px;
        padding: 30px;
    .dashboard-backend-card {
        cursor: pointer;
        transition: transform 0.12s ease, box-shadow 0.12s ease;
    }

    .dashboard-backend-card:hover,
    .dashboard-backend-card:focus {
        transform: translateY(-2px);
        box-shadow: 0 0.35rem 0.8rem rgba(0, 0, 0, 0.12);
    }
    }

    .login-header h1 {
        font-size: 1.5rem;
    }
}

/* Alert Adjustments */
.alert {
    border-radius: 6px;
    border: none;
}

.invalid-feedback {
    display: block;
    margin-top: 5px;
    font-size: 0.875rem;
}

#users-table thead th.sortable {
    cursor: pointer;
    user-select: none;
    white-space: nowrap;
}

#users-table thead th.sortable .sort-indicator {
    color: var(--primary-color);
    font-size: 0.8rem;
    margin-left: 4px;
}

#users-table thead th.sorted-active {
    color: var(--primary-color);
}

/* Users Table Actions */
#users-table tbody td {
    vertical-align: middle;
}

#users-table .actions-column {
    white-space: nowrap;
}

#users-table .btn-sm {
    padding: 0.25rem 0.5rem;
    font-size: 0.8rem;
    margin-right: 4px;
}

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

.edit-user-btn:hover {
    background-color: #0b5ed7;
    border-color: #0b5ed7;
    color: white;
}

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

.delete-user-btn:hover {
    background-color: #bb2d3b;
    border-color: #bb2d3b;
    color: white;
}

/* Modal Styles */
.modal-header {
    background-color: #f8f9fa;
    border-bottom: 1px solid #dee2e6;
}

.modal-title {
    color: #333;
    font-weight: 600;
}

.form-label {
    font-weight: 500;
    color: #333;
    margin-bottom: 0.5rem;
}

.form-control:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 0.2rem rgba(13, 110, 253, 0.25);
}

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

.btn-success:hover {
    background-color: #157347;
    border-color: #157347;
}

.collaborator-section-block {
    border: 1px solid #e3e8ef;
    border-radius: 8px;
    padding: 14px;
    margin-bottom: 14px;
    background: #fbfcfe;
}

.collaborator-section-title {
    margin-bottom: 12px;
    color: #0f172a;
    font-weight: 600;
}

#collabSummaryContent .table td,
#collabSummaryContent .table th {
    font-size: 0.9rem;
}

.collab-summary-meta {
    margin-bottom: 12px;
}

.collab-result-list {
    display: grid;
    gap: 12px;
}

.collab-result-card {
    border: 1px solid #dbe5f1;
    border-radius: 10px;
    padding: 14px;
    background: #fff;
}

.collab-result-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 8px;
    margin-bottom: 10px;
}

.collab-result-title {
    font-weight: 700;
    letter-spacing: 0.2px;
}

.collab-result-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 8px 12px;
}

.collab-result-success {
    border-left: 5px solid #198754;
    background: #f3fbf7;
}

.collab-result-partial {
    border-left: 5px solid #d39e00;
    background: #fffaf0;
}

.collab-result-failed {
    border-left: 5px solid #dc3545;
    background: #fff5f5;
}

.collab-result-not-selected {
    border-left: 5px solid #6c757d;
    background: #f8f9fa;
}

.collab-group-badge {
    background: #e9f3ff;
    color: #124c8a;
    border: 1px solid #cfe2ff;
    font-weight: 500;
}

.collab-group-badge-selected {
    background: #f1f3f5;
    color: #343a40;
    border: 1px solid #dee2e6;
    font-weight: 500;
}

.collab-errors-list {
    margin: 6px 0 0;
    padding-left: 18px;
}

.collab-errors-list li {
    margin-bottom: 4px;
}

.collab-linkedin-card {
    margin-top: 14px;
    border: 1px solid #d8e2f0;
    border-radius: 10px;
    padding: 14px;
    background: #f8fbff;
}

.collab-linkedin-paragraph {
    margin-bottom: 12px;
    color: #1f2a37;
    line-height: 1.6;
}

.collab-linkedin-toggle {
    margin-bottom: 12px;
}

.collab-linkedin-hashtags {
    margin-top: 12px;
    margin-bottom: 0;
    color: #0d4a86;
    font-weight: 600;
}

@media (max-width: 768px) {
    .collab-result-grid {
        grid-template-columns: 1fr;
    }

    .collab-linkedin-card {
        padding: 12px;
    }
}