/* ================= 1. ตัวแปรสีหลัก ================= */
        :root {
            --maroon: #7A1723;
            --maroon-dark: #520D15;
            --gold: #D4AF37;
            --bg-page: #F5F7FA;
            --white: #FFFFFF;
            --text-main: #2C3E50;
            --text-muted: #7F8C8D;
            --border-line: #E2E8F0;
            --input-bg: #F8FAFC;
        }

        * { margin: 0; padding: 0; box-sizing: border-box; }
        body { font-family: 'Prompt', sans-serif; background-color: var(--bg-page); color: var(--text-main); display: flex; justify-content: center; align-items: center; min-height: 100vh; padding: 20px; }
        a { text-decoration: none; transition: 0.3s; }
        a:hover { text-decoration: none; }
        .serif { font-family: 'Playfair Display', serif; }

        /* ================= 2. เลย์เอาต์หลักแบบแบ่งครึ่ง ================= */
        .register-wrapper { 
            display: flex; width: 100%; max-width: 1150px; 
            background: var(--white); border-radius: 24px; 
            box-shadow: 0 20px 40px rgba(122, 23, 35, 0.08); 
            overflow: hidden; height: 90vh; min-height: 700px;
        }
        
        .register-image { 
            flex: 1.1; background-color: var(--maroon-dark);
            background-image: linear-gradient(to bottom, rgba(122,23,35,0.3), rgba(44,62,80,0.85)), url('https://www.therichonline.com/templates-new/img/photo-1620916566398-39f1143ab7be.png'); 
            background-size: cover; background-position: center; background-repeat: no-repeat;
            display: flex; flex-direction: column; justify-content: flex-end; padding: 50px; color: var(--white); 
        }
        .register-image h2 { font-size: 2.8rem; margin-bottom: 10px; color: var(--gold); line-height: 1.1; }
        .register-image p { font-size: 1.05rem; font-weight: 300; line-height: 1.6; color: rgba(255,255,255,0.9); max-width: 90%; }

        .form-container { 
            flex: 1.3; padding: 40px 50px; 
            overflow-y: auto; display: flex; flex-direction: column;
        }
        .form-container::-webkit-scrollbar { width: 6px; }
        .form-container::-webkit-scrollbar-track { background: var(--bg-page); border-radius: 10px; }
        .form-container::-webkit-scrollbar-thumb { background: #CBD5E1; border-radius: 10px; }
        .form-container::-webkit-scrollbar-thumb:hover { background: var(--maroon); }

        .brand-logo { font-size: 1.8rem; font-weight: 700; color: var(--maroon); text-align: center; display: flex; align-items: center; justify-content: center; gap: 8px; margin-bottom: 5px;}
        .brand-logo span { color: var(--gold); }
        .form-subtitle { text-align: center; color: var(--text-muted); font-size: 0.95rem; margin-bottom: 25px; line-height: 1.6;}
        .form-subtitle a { color: var(--maroon); font-weight: 600; text-decoration: underline transparent; }

        /* ================= 3. การจัดการช่อง Input ================= */
        .form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 15px 20px; }
        .full-width { grid-column: span 2; } 

        .input-group { width: 100%; display: flex; flex-direction: column; margin-bottom: 0; }
        .label-row { display: flex; justify-content: space-between; align-items: flex-end; margin-bottom: 8px; }
        .label-row label { font-size: 0.9rem; font-weight: 500; color: var(--text-main); margin-bottom: 0; }
        .label-hint { font-size: 0.75rem; color: var(--text-muted); font-weight: 400; margin-left: 5px; }

        .input-box { display: flex; align-items: center; background: var(--input-bg); border: 1.5px solid var(--border-line); border-radius: 12px; transition: 0.3s; width: 100%; position: relative; overflow: hidden; }
        .input-box:focus-within { border-color: var(--maroon); background: var(--white); box-shadow: 0 0 0 4px rgba(122, 23, 35, 0.08); }
        
        /* สไตล์กรอบแดง เมื่อ JustValidate ฟ้อง Error */
        .input-box.input-error { border-color: #E74C3C !important; background: #FDEDEC !important; }
        .error-msg { color: #E74C3C; font-size: 0.85rem; margin-top: 5px; display: block; padding-left: 5px; }
        
        /* บังคับแสดงข้อความของ JustValidate ให้สวยงาม */
        .just-validate-error-label { 
            display: block !important; 
            color: #E74C3C !important; 
            font-size: 0.85rem !important; 
            margin-top: 5px !important; 
            padding-left: 5px !important; 
            font-family: 'Prompt', sans-serif !important;
            font-weight: 400 !important;
        }

        .input-box input, .input-box select { flex: 1; border: none !important; padding: 14px 15px; background: transparent !important; font-family: 'Prompt', sans-serif; font-size: 0.95rem; color: var(--text-main); outline: none; width: 100%; box-shadow: none !important; }
        .input-box select { appearance: none; -webkit-appearance: none; cursor: pointer; padding-right: 40px; }
        .select-wrapper::after { content: '\f107'; font-family: 'Font Awesome 5 Free', 'Font Awesome 6 Free', 'FontAwesome'; font-weight: 900; position: absolute; right: 15px; top: 50%; transform: translateY(-50%); color: #A0ABC0; pointer-events: none; }

        .iti { width: 100%; display: block; }
        .iti__flag-container { border-radius: 12px 0 0 12px; z-index: 10; }
        .iti input[type="tel"] { padding-top: 14px !important; padding-bottom: 14px !important; padding-right: 15px !important; }

        /* ================= 4. ปุ่ม และ Google ================= */
        .google-auth-wrapper { display: flex; justify-content: center; width: 100%; }
        .divider { display: flex; align-items: center; text-align: center; margin: 20px 0; color: #A0ABC0; font-size: 0.85rem; }
        .divider::before, .divider::after { content: ''; flex: 1; border-bottom: 1px solid var(--border-line); }
        .divider span { padding: 0 15px; }

        .terms-box { display: flex; align-items: flex-start; gap: 10px; margin: 15px 0 5px; cursor: pointer; }
        .terms-box input[type="checkbox"] { margin-top: 3px; accent-color: var(--maroon); width: 18px; height: 18px; cursor: pointer; flex-shrink: 0; }
        .terms-text { font-size: 0.85rem; color: var(--text-main); line-height: 1.5; }
        .terms-text a { color: var(--maroon); font-weight: 600; text-decoration: underline transparent; transition: 0.3s; }

        .cf-wrapper { display: flex; justify-content: center; margin-top: 20px; }
        .btn-primary { width: 100%; padding: 15px; border-radius: 12px; font-family: 'Prompt', sans-serif; font-size: 1.05rem; font-weight: 500; cursor: pointer; transition: 0.3s; border: none; background: var(--maroon); color: var(--white); box-shadow: 0 4px 15px rgba(122, 23, 35, 0.2); }
        .btn-primary:hover { background: var(--maroon-dark); transform: translateY(-2px); box-shadow: 0 8px 20px rgba(122, 23, 35, 0.3); }

        /* ================= 5. นโยบาย Modal ================= */
        .custom-modal { display: none; position: fixed; top: 0; left: 0; width: 100%; height: 100%; background: rgba(0,0,0,0.6); z-index: 9999; justify-content: center; align-items: center; opacity: 0; transition: opacity 0.3s; }
        .custom-modal.show { display: flex; opacity: 1; }
        .custom-modal-dialog { background: var(--white); width: 90%; max-width: 800px; border-radius: 16px; display: flex; flex-direction: column; overflow: hidden; transform: translateY(-20px); transition: transform 0.3s; max-height: 85vh; }
        .custom-modal.show .custom-modal-dialog { transform: translateY(0); }
        .custom-modal-header { display: flex; justify-content: space-between; align-items: center; padding: 20px 25px; border-bottom: 1px solid var(--border-line); background: var(--white); }
        .custom-modal-header h4 { margin: 0; font-size: 1.15rem; font-family: 'Prompt', sans-serif; font-weight: 600; color: var(--maroon); }
        .custom-close-btn { background: none; border: none; font-size: 1.5rem; color: var(--text-muted); cursor: pointer; transition: 0.3s; }
        .custom-modal-body { padding: 25px; overflow-y: auto; font-size: 0.95rem; line-height: 1.7; color: var(--text-main); font-family: 'Prompt', sans-serif; }
        .custom-modal-footer { padding: 15px 25px; border-top: 1px solid var(--border-line); background: #F8F9FA; display: flex; justify-content: flex-end; }

        @media (max-width: 900px) {
            .register-wrapper { flex-direction: column; max-width: 500px; height: auto; margin: 15px; }
            .register-image { display: none; } 
            .form-container { padding: 35px 25px; overflow-y: visible; }
            .form-grid { grid-template-columns: 1fr; gap: 15px; }
            .full-width { grid-column: span 1; }
        }

        /* ================= 7. แก้ไขหน้าตาปฏิทิน (Daterangepicker) ให้พรีเมียม ================= */
        .daterangepicker {
            font-family: 'Prompt', sans-serif !important;
            border-radius: 16px !important;
            border: none !important;
            box-shadow: 0 10px 40px rgba(0,0,0,0.15) !important;
            padding: 10px !important;
            margin-top: 5px !important;
        }
        
        /* ตกแต่งลูกกลิ้งเลือกเดือน/ปี */
        .daterangepicker select.monthselect, .daterangepicker select.yearselect {
            padding: 4px !important; 
            border-radius: 6px !important; 
            border: 1px solid var(--border-line) !important; 
            background: var(--white) !important; 
            outline: none !important; 
            font-family: 'Prompt', sans-serif !important; 
            cursor: pointer !important;
        }
        
        /* สีวันที่เมื่อเอาเมาส์ชี้ หรือคลิกเลือก */
        .daterangepicker td.active, .daterangepicker td.active:hover { 
            background-color: var(--maroon) !important; 
            color: #fff !important; 
            border-radius: 8px !important;
        }
        .daterangepicker td.available:hover { 
            background-color: var(--input-bg) !important; 
            border-radius: 8px !important;
        }
        
        /* 🚨 จัดระเบียบปุ่ม ตกลง/ยกเลิก ไม่ให้ล้นกรอบ */
        .daterangepicker .drp-buttons {
            display: flex !important; 
            justify-content: flex-end !important; 
            align-items: center !important;
            gap: 10px !important; 
            padding: 15px 10px 5px !important; 
            border-top: 1px solid var(--border-line) !important;
        }
        .daterangepicker .drp-buttons .btn {
            width: auto !important; /* ลบล้างความกว้าง 100% จากปุ่มหน้าเว็บเดิม */
            padding: 6px 16px !important; 
            font-size: 0.9rem !important; 
            border-radius: 8px !important; 
            box-shadow: none !important; 
            font-weight: 500 !important;
            margin: 0 !important;
        }
        .daterangepicker .cancelBtn { 
            background: #F1F5F9 !important; 
            color: var(--text-main) !important; 
            border: none !important; 
        }
        .daterangepicker .cancelBtn:hover { 
            background: #E2E8F0 !important; 
        }
        .daterangepicker .applyBtn { 
            background: var(--maroon) !important; 
            color: var(--white) !important; 
            border: none !important; 
        }
        .daterangepicker .applyBtn:hover { 
            background: var(--maroon-dark) !important; 
        }