:root {
            --color-primary: #113859;
            --color-secondary: #FC2F52;
            --color-tertiary: #FFB800;
            --color-light: #f8f9fa;
            --color-dark: #212529;
        }

        body {
            background-color: #f5f7fa;
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
        }

        .main-title {
            text-align: center;
            margin-bottom: 2rem;
            position: relative;
        }

        .main-title h1 {
            color: var(--color-primary);
            font-weight: 700;
            text-shadow: 0 2px 4px rgba(0,0,0,0.1);
            position: relative;
            display: inline-block;
        }

        .main-title h1::after {
            content: '';
            position: absolute;
            bottom: -10px;
            left: 50%;
            transform: translateX(-50%);
            width: 80px;
            height: 4px;
            background: var(--color-secondary);
            border-radius: 2px;
        }

        .form-card {
            background: white;
            border-radius: 12px;
            box-shadow: 0 10px 30px rgba(0,0,0,0.08);
            padding: 2.5rem;
            margin: 1.5rem 0;
            border: none;
        }

        .form-section {
            margin-bottom: 2rem;
            padding: 1.5rem;
            background-color: rgba(17, 56, 89, 0.02);
            border-radius: 8px;
            border-left: 4px solid var(--color-primary);
        }

        .form-section h3 {
            color: var(--color-primary);
            margin-bottom: 1.5rem;
            font-weight: 600;
        }

        .form-label {
            font-weight: 600;
            color: var(--color-dark);
            margin-bottom: 0.5rem;
        }

        .form-control, .form-select {
            border: 2px solid #e9ecef;
            border-radius: 8px;
            height: 35px;
            transition: all 0.3s ease;
        }

        .form-control:focus, .form-select:focus {
            border-color: var(--color-primary);
            box-shadow: 0 0 0 0.2rem rgba(17, 56, 89, 0.25);
        }

        .btn-primary {
            background: linear-gradient(135deg, var(--color-primary), #0d2a4a);
            border: none;
            padding: 0.75rem 2rem;
            border-radius: 8px;
            color: white;
            font-weight: 600;
            transition: all 0.3s ease;
        }

        .btn-primary:hover {
            background: linear-gradient(135deg, var(--color-secondary), #e0294a);
            transform: translateY(-2px);
            box-shadow: 0 5px 15px rgba(252, 47, 82, 0.3);
        }

        .required::after {
            content: " *";
            color: var(--color-secondary);
        }

        .hidden {
            display: none;
        }

        .form-button-group {
            display: flex;
            justify-content: center;
            gap: 1rem;
            margin-top: 2rem;
        }

        .container {
            max-width: 1200px;
            margin: 0 auto;
        }

        footer {
            background: linear-gradient(135deg, var(--color-primary), #0d2a4a);
            color: white;
            text-align: center;
            padding: 2rem 0;
            margin-top: 3rem;
        }

        /* Modal styles */
        .modal {
            display: none;
            position: fixed;
            z-index: 1050;
            left: 0;
            top: 0;
            width: 100%;
            height: 100%;
            background-color: rgba(0,0,0,0.5);
        }

        .modal-content {
            background-color: #fefefe;
            margin: 15% auto;
            padding: 20px;
            border: 1px solid #888;
            width: 80%;
            max-width: 600px;
            border-radius: 8px;
            box-shadow: 0 4px 8px rgba(0,0,0,0.2);
        }

        .modal-header {
            padding: 15px 20px;
            border-bottom: 1px solid #eee;
            margin: -20px -20px 20px -20px;
            background-color: var(--color-primary);
            color: white;
            border-radius: 8px 8px 0 0;
        }

        .modal-body {
            padding: 20px 0;
        }

        .modal-footer {
            padding: 15px 20px;
            border-top: 1px solid #eee;
            margin: 20px -20px -20px -20px;
            text-align: right;
        }

        .btn-modal {
            padding: 0.5rem 1.5rem;
            border-radius: 4px;
            cursor: pointer;
            font-weight: 600;
            transition: all 0.3s ease;
        }

        .btn-accept {
            background-color: var(--color-primary);
            color: white;
            border: none;
        }

        .btn-accept:hover {
            background-color: var(--color-secondary);
        }

        .btn-cancel {
            background-color: #6c757d;
            color: white;
            border: none;
            margin-right: 10px;
        }

        .btn-cancel:hover {
            background-color: #5a6268;
        }

        .form-disabled {
            opacity: 0.6;
            pointer-events: none;
        }

        @media (max-width: 768px) {
            .main-title h1 {
                font-size: 1.5rem;
            }
            
            .form-card {
                padding: 1.5rem;
            }
            
            .form-section {
                padding: 1rem;
            }
            
            .modal-content {
                width: 90%;
                margin: 20% auto;
            }
        }

        @media (max-width: 576px) {
            .main-title h1 {
                font-size: 1.3rem;
            }
            
            .form-card {
                padding: 1rem;
            }
            
            .form-button-group {
                flex-direction: column;
            }
        }