:root {
            --orange: #f37021;
            --gray-light: #f9f9f9;
            --text-gray: #666;
            --error-red: #d32f2f;
            --border-gray: #eeeeee;
        }

        h2 { color: #444; letter-spacing: 2px; font-weight: 300; margin-bottom: 40px; text-transform: uppercase; }

        /* --- Step Progress Bar --- */
        .step-wrapper { display: flex; justify-content: center; align-items: center; margin-bottom: 50px; }
        .step-circle {
            width: 50px; height: 50px; border-radius: 50%;
            background-color: var(--gray-light); border: 1px solid var(--border-gray);
            display: flex; align-items: center; justify-content: center;
            font-size: 18px; color: #999; z-index: 2; transition: 0.3s;
        }
        .step-circle.active { background-color: var(--orange); color: white; border-color: var(--orange); }
        .step-line { height: 2px; background-color: var(--border-gray); flex: 0.1; z-index: 1; margin: 0 -2px; transition: 0.3s; }
        .step-line.active { background-color: var(--orange); }

        /* --- Form Sections --- */
        .form-section { display: none; text-align: left; animation: fadeIn 0.4s; }
        .form-section.active { display: block; }
        @keyframes fadeIn { from { opacity: 0; transform: translateY(10px); } to { opacity: 1; transform: translateY(0); } }

        .section-title { color: var(--orange); font-size: 22px; margin-bottom: 25px; font-weight: normal; border-bottom: 1px solid #eee; padding-bottom: 10px; }
        .form-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; margin-bottom: 20px; }
        
        .input-group { margin-bottom: 15px; }
        label { display: block; font-size: 13px; margin-bottom: 8px; color: #333; }
        label span { color: var(--error-red); }

        input[type="text"], input[type="email"], input[type="date"], select {
            width: 100%; padding: 12px; border: 1px solid var(--border-gray);
            background-color: var(--gray-light); border-radius: 4px; box-sizing: border-box;
        }

        .radio-group { display: flex; gap: 20px; margin-top: 10px; }
        .error-msg { color: var(--error-red); font-size: 11px; margin-top: 5px; display: block; }

        /* --- Buttons --- */
        .btn-container { text-align: center; margin-top: 40px; display: flex; justify-content: center; gap: 15px; }
        .btn { padding: 12px 35px; border-radius: 4px; cursor: pointer; font-size: 16px; border: none; transition: 0.3s; }
        .btn-back { background-color: #ddd; color: #333; }
        .btn-next { background-color: #4a4a4a; color: white; }
        .btn-back:hover { background-color: #ccc; }
        .btn-next:hover { background-color: #333; }
        .hidden { display: none; }