* {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
            font-family: 'Kanit', sans-serif;
        }
        body {
            background-color: #f4f7f6;
            color: #333;
            line-height: 1.6;
        }
        /* Header */
        header {
            background-color: #ffffff;
            box-shadow: 0 2px 10px rgba(0,0,0,0.05);
            padding: 1rem 5%;
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .logo {
            font-size: 1.5rem;
            font-weight: 600;
            color: #0d6efd;
        }
        header a {
            color: #333;
            text-decoration: none;
        }
        header a:hover {
            color: #0d6efd;
        }

        /* Hero Section */
        .hero {
            background: linear-gradient(135deg, #0d6efd 0%, #004085 100%);
            color: white;
            padding: 3rem 1rem;
            text-align: center;
        }
        .hero h1 {
            font-size: 2rem;
            margin-bottom: 0.5rem;
        }
        .hero p {
            opacity: 0.9;
            font-size: 1.1rem;
        }

        /* Form Container */
        .container {
            max-width: 800px;
            margin: -2rem auto 3rem auto;
            padding: 0 1rem;
        }
        .card {
            background: white;
            padding: 2rem;
            border-radius: 12px;
            box-shadow: 0 4px 20px rgba(0,0,0,0.08);
        }
        .form-title {
            font-size: 1.3rem;
            color: #0d6efd;
            margin-bottom: 1.5rem;
            border-bottom: 2px solid #eef2f5;
            padding-bottom: 0.5rem;
        }

        /* Form Controls */
        .form-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 1.2rem;
        }
        @media (max-width: 600px) {
            .form-grid {
                grid-template-columns: 1fr;
            }
        }
        .form-group {
            display: flex;
            flex-direction: column;
        }
        .form-group.full-width {
            grid-column: 1 / -1;
        }
        label {
            font-size: 0.95rem;
            margin-bottom: 0.4rem;
            font-weight: 500;
        }

        /* ดอกจันสีแดงตรง Required */
        .req-star::after {
            content: " *";
            color: #dc3545;
            font-weight: bold;
        }

        input[type="text"],
        input[type="tel"],
        input[type="email"],
        input[type="date"],
        select {
            padding: 0.75rem;
            border: 1px solid #ced4da;
            border-radius: 6px;
            font-size: 1rem;
            transition: border-color 0.2s;
            width: 100%;
        }
        input:focus, select:focus {
            outline: none;
            border-color: #0d6efd;
        }

        /* Style สำหรับกล่องอัปโหลดไฟล์ขนาดใหญ่ */
        .upload-box {
            border: 2px dashed #0d6efd;
            background-color: #f8fafc;
            border-radius: 10px;
            padding: 2rem 1rem;
            text-align: center;
            cursor: pointer;
            transition: all 0.2s ease-in-out;
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            margin-top: 0.3rem;
        }
        .upload-box:hover {
            background-color: #eef5ff;
            border-color: #0b5ed7;
        }
        .upload-icon {
            font-size: 2.5rem;
            margin-bottom: 0.5rem;
        }
        .upload-text {
            font-size: 1rem;
            color: #0d6efd;
            font-weight: 500;
        }
        .upload-subtext {
            font-size: 0.85rem;
            color: #6c757d;
            margin-top: 0.2rem;
        }
        .file-input-hidden {
            display: none;
        }

        /* Price & Submit */
        .price-box {
            background-color: #e8f1ff;
            padding: 1.2rem;
            border-radius: 8px;
            margin-top: 1.5rem;
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .price-amount {
            font-size: 1.8rem;
            font-weight: 600;
            color: #0d6efd;
        }
        .btn-submit {
            width: 100%;
            background-color: #28a745;
            color: white;
            border: none;
            padding: 1rem;
            font-size: 1.2rem;
            font-weight: 600;
            border-radius: 6px;
            cursor: pointer;
            margin-top: 1.5rem;
            transition: background 0.2s;
        }
        .btn-submit:hover {
            background-color: #218838;
        }
        .btn-submit:disabled {
            background-color: #9bc9a9;
            cursor: not-allowed;
        }

        .status-msg {
            margin-top: 1rem;
            padding: 0.9rem;
            border-radius: 6px;
            font-size: 0.95rem;
            display: none;
        }
        .status-msg.show {
            display: block;
        }
        .status-msg.success {
            background-color: #d4edda;
            color: #155724;
        }
        .status-msg.error {
            background-color: #f8d7da;
            color: #721c24;
        }

        /* Features */
        .features {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 1.5rem;
            margin-top: 3rem;
            text-align: center;
        }
        .feature-item {
            background: white;
            padding: 1.5rem;
            border-radius: 8px;
        }
        .feature-icon {
            font-size: 2rem;
            margin-bottom: 0.5rem;
        }