:root {
            --primary: #3a4cc0;
            --primary-light: #eef0fd;
            --secondary: #6c757d;
            --success: #198754;
            --danger: #dc3545;
            --light-bg: #f8f9fa;
            --border-radius: 12px;
            --box-shadow: 0 8px 24px rgba(0, 0, 0, 0.08);
        }

        body {
            background: var(--light-bg);
            font-family: 'Inter', sans-serif;
        }

        .card {
            border: 0;
            box-shadow: var(--box-shadow);
            border-radius: var(--border-radius);
            overflow: hidden;
        }

        .section-header {
            background: var(--primary);
            color: #fff;
            font-weight: 600;
            font-size: 1rem;
            padding: 0.6rem 1rem;
            border-radius: 6px;
            margin: 2rem 0 1rem 0;
            display: flex;
            align-items: center;
        }

        .section-header i {
            margin-right: 0.5rem;
        }

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

        .form-control,
        .form-select {
            border-radius: 8px;
            border: 1px solid #dee2e6;
            padding: 0.65rem 1rem;
        }

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

        .btn-primary:hover {
            background-color: #2c3da5;
            border-color: #2c3da5;
        }

        .counter.ok {
            color: var(--success);
        }

        .counter.limit {
            color: var(--danger);
            font-weight: 600;
        }