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

        body {
            background: #f6f8fc;
            font-family: 'Inter', sans-serif;
            padding: 2rem 1rem;
            color: #1e293b;
        }

        .container {
            max-width: 560px;
            margin: 0 auto;
        }

        .card {
            background: #ffffff;
            border-radius: 2rem;
            box-shadow: 0 20px 35px -12px rgba(0, 0, 0, 0.08), 0 0 0 1px rgba(0, 0, 0, 0.02);
            overflow: hidden;
        }

        .header {
            padding: 2rem 1.8rem 0.5rem 1.8rem;
            border-bottom: 1px solid #eef2f6;
        }

        .badge {
            display: inline-block;
            font-size: 0.7rem;
            font-weight: 600;
            text-transform: uppercase;
            letter-spacing: 1px;
            background: #eef2ff;
            color: #4f46e5;
            padding: 0.2rem 0.8rem;
            border-radius: 30px;
            margin-bottom: 1rem;
        }

        h1 {
            font-size: 1.8rem;
            font-weight: 600;
            letter-spacing: -0.3px;
            color: #0f172a;
            text-align: center;
        }

        .subhead {
            color: #475569;
            margin-top: 0.5rem;
            font-size: 0.9rem;
            line-height: 1.4;
            margin-bottom: 1.5rem;
            text-align: center;
        }

        .form-body {
            padding: 1.8rem;
        }

        .input-group {
            margin-bottom: 1.5rem;
        }

        label {
            font-size: 0.8rem;
            font-weight: 600;
            text-transform: uppercase;
            letter-spacing: 0.5px;
            color: #334155;
            display: block;
            margin-bottom: 0.5rem;
        }

        input {
            width: 100%;
            padding: 0.85rem 1rem;
            font-size: 0.95rem;
            font-family: 'Inter', monospace;
            background: #ffffff;
            border: 1.5px solid #e2e8f0;
            border-radius: 1rem;
            transition: 0.2s;
            color: #0f172a;
        }

        input:focus {
            outline: none;
            border-color: #818cf8;
            box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.1);
        }

        .checkbox-group {
            display: flex;
            align-items: center;
            gap: 12px;
            margin: 1.8rem 0;
            padding: 0.8rem 0;
        }

        .checkbox-group input {
            width: 20px;
            height: 20px;
            accent-color: #4f46e5;
        }

        .checkbox-group label {
            margin: 0;
            font-size: 0.85rem;
            font-weight: 400;
            text-transform: none;
            letter-spacing: normal;
            color: #334155;
        }

        .btn-submit {
            width: 100%;
            background: #0f172a;
            color: white;
            font-weight: 600;
            padding: 1rem;
            font-size: 0.95rem;
            border: none;
            border-radius: 1.5rem;
            cursor: pointer;
            transition: 0.2s;
            font-family: 'Inter', sans-serif;
        }

        .btn-submit:hover {
            background: #1e293b;
            transform: translateY(-2px);
        }

        .alert {
            padding: 1rem;
            border-radius: 1rem;
            margin-bottom: 1.5rem;
            font-size: 0.85rem;
        }

        .alert-success {
            background: #ecfdf5;
            color: #059669;
            border: 1px solid #a7f3d0;
        }

        .alert-warning {
            background: #fffbeb;
            color: #d97706;
            border: 1px solid #fde68a;
        }

        .alert-error {
            background: #fef2f2;
            color: #dc2626;
            border: 1px solid #fecaca;
        }

        .footer {
            padding: 1rem 1.8rem 1.8rem;
            border-top: 1px solid #eef2f6;
            font-size: 0.7rem;
            color: #94a3b8;
            text-align: center;
        }

        @media (max-width: 480px) {
            .form-body {
                padding: 1.5rem;
            }

            h1 {
                font-size: 1.5rem;
            }
        }