body {
            margin: 0;
            padding: 0;
        }

        .login-container {
            height: 120%;
            display: flex;
            align-items: center;
            justify-content: center;
            margin-top: 35px;
            padding: 40px 20px;
            background: url(../image/bg-main.png) center / cover no-repeat;
            position: relative;
        }

        .login-wrapper {
            width: 100%;
            max-width: 1200px;
            background: white;
            border-radius: 30px;
            box-shadow: 0 10px 40px rgba(0, 0, 0, 0.15);
            overflow: hidden;
            display: flex;
            flex-direction: row;
        }

        .login-image-section {
            flex: 1;
            min-height: 500px;
            position: relative;
            overflow: hidden;
            background: white;
            padding: 20px;
            display: flex;
            align-items: center;
            justify-content: center;
        }

        .login-image-section img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            display: block;
            border-radius: 20px;
        }

        .login-form-section {
            flex: 1;
            padding: 60px;
            display: flex;
            flex-direction: column;
            justify-content: center;
            background: white;
        }

        .login-header {
            text-align: center;
            margin-bottom: 10px;
        }

        .login-header h2 {
            color: #c2185b;
            font-size: 32px;
            font-weight: 700;
            margin-bottom: 15px;
            font-family: 'CHULALONGKORN';
        }

        .login-subtitle {
            color: #c2185b;
            font-size: 20px;
            margin-bottom: 15px;
            border-bottom: 2px dotted #e0e0e0;
            padding-bottom: 20px;
        }

        .form-group {
            margin-bottom: 25px !important;
            position: relative !important;
        }

        .form-group label {
            display: block;
            color: #c2185b;
            font-weight: 600;
            margin-bottom: 10px;
            font-size: 14px;
            text-transform: uppercase;
        }

        .form-control {
            width: 100%;
            padding: 12px 50px 12px 16px !important; /* ✅ เพิ่ม padding-right เพื่อให้ icon มีที่อยู่ */
            border: 1px solid #e0e0e0;
            border-radius: 50px;
            font-size: 20px;
            transition: all 0.3s ease;
            background: #f5f5f5;
        }

        .form-control:focus {
            outline: none;
            border-color: #f48fb1 !important;
            background: white !important;
            box-shadow: 0 0 0 3px rgba(244, 143, 177, 0.1) !important;
        }

        .form-control::placeholder {
            color: #bdbdbd;
        }

        /* ✅ Validation States - FORCE DISPLAY */
        .form-control.is-invalid {
            border: 2px solid #dc3545 !important;
            padding-right: 50px !important;
            background-color: #fff !important;
            background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 12 12' width='12' height='12' fill='none' stroke='%23dc3545'%3e%3ccircle cx='6' cy='6' r='4.5'/%3e%3cpath stroke-linejoin='round' d='M5.8 3.6h.4L6 6.5z'/%3e%3ccircle cx='6' cy='8.2' r='.6' fill='%23dc3545' stroke='none'/%3e%3c/svg%3e") !important;
            background-repeat: no-repeat !important;
            background-position: right 15px center !important;
            background-size: 20px 20px !important;
        }

        .form-control.is-valid {
            border: 2px solid #198754 !important;
            padding-right: 50px !important;
            background-color: #fff !important;
            background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 8 8'%3e%3cpath fill='%23198754' d='M2.3 6.73L.6 4.53c-.4-1.04.46-1.4 1.1-.8l1.1 1.4 3.4-3.8c.6-.63 1.6-.27 1.2.7l-4 4.6c-.43.5-.8.4-1.1.1z'/%3e%3c/svg%3e") !important;
            background-repeat: no-repeat !important;
            background-position: right 15px center !important;
            background-size: 20px 20px !important;
        }

        /* ✅ Validation Message - FORCE DISPLAY */
        .validation-message {
            color: #dc3545 !important;
            font-size: 14px !important;
            margin-top: 8px !important;
            margin-left: 16px !important;
            display: none !important;
            font-weight: 600 !important;
            line-height: 1.5 !important;
        }

        .validation-message.show {
            display: block !important;
            animation: fadeIn 0.2s ease-in !important;
            visibility: visible !important;
            opacity: 1 !important;
        }

        @keyframes fadeIn {
            from {
                opacity: 0;
                transform: translateY(-5px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }

        /* ✅ Password Toggle - FORCE DISPLAY */
        .position-relative {
            position: relative !important;
        }

        .password-toggle {
            position: absolute !important;
            right: 18px !important;
            top: 50% !important;
            transform: translateY(-50%) !important;
            cursor: pointer !important;
            color: #6c757d !important;
            z-index: 100 !important; /* ✅ เพิ่ม z-index สูงมาก */
            transition: color 0.15s ease-in-out !important;
            font-size: 20px !important;
            width: 24px !important;
            height: 24px !important;
            display: flex !important;
            align-items: center !important;
            justify-content: center !important;
            pointer-events: auto !important; /* ✅ ให้คลิกได้ */
        }

        .password-toggle:hover {
            color: #c2185b !important;
        }

        .password-toggle i {
            font-size: 20px !important;
            pointer-events: none !important;
        }

        /* ✅ Alert Styles */
        .alert {
            position: relative !important;
            display: flex !important;
            align-items: flex-start !important;
            padding: 1rem 3rem 1rem 1rem !important;
            margin-bottom: 1.5rem !important;
            border: none !important;
            border-radius: 20px !important;
            animation: slideDown 0.3s ease-out !important;
        }

        @keyframes slideDown {
            from {
                opacity: 0;
                transform: translateY(-10px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }

        .alert-danger {
            background-color: #fff5f5 !important;
            border-left: 4px solid #dc3545 !important;
            color: #721c24 !important;
        }

        .alert-success {
            background-color: #f0fff4 !important;
            border-left: 4px solid #28a745 !important;
            color: #155724 !important;
        }

        .alert-warning {
            background-color: #fff3cd !important;
            border-left: 4px solid #ffc107 !important;
            color: #856404 !important;
        }

        .alert-content {
            flex: 1 !important;
            display: flex !important;
            align-items: center !important;
            gap: 0.5rem !important;
        }

        .alert-content i {
            flex-shrink: 0 !important;
            font-size: 1.1rem !important;
        }

        .alert-content span {
            flex: 1 !important;
            line-height: 1.5 !important;
        }

        .alert .btn-close {
            position: absolute !important;
            top: 50% !important;
            right: 1rem !important;
            transform: translateY(-50%) !important;
            width: 1.5rem !important;
            height: 1.5rem !important;
            padding: 0 !important;
            background: transparent !important;
            border: none !important;
            cursor: pointer !important;
            opacity: 0.5 !important;
            transition: opacity 0.15s ease-in-out !important;
            display: flex !important;
            align-items: center !important;
            justify-content: center !important;
            font-size: 1.25rem !important;
            font-weight: 700 !important;
            line-height: 1 !important;
            color: inherit !important;
        }

        .alert .btn-close:hover {
            opacity: 1 !important;
        }

        .alert .btn-close:focus {
            outline: 2px solid currentColor !important;
            outline-offset: 2px !important;
            opacity: 1 !important;
        }

        /* Text Utilities */
        .text-danger {
            color: #dc3545 !important;
        }

        .mb-0 {
            margin-bottom: 0 !important;
        }

        .me-2 {
            margin-right: 0.5rem !important;
        }

        .btn-wrapper {
            background: linear-gradient(135deg, #f5f5f5 0%, #e0e0e0 100%);
            padding: 30px;
            border-radius: 20px;
            margin-top: 20px;
            display: flex;
            justify-content: center;
            align-items: center;
        }

        .btn-login {
            width: 100%;
            max-width: 400px;
            padding: 15px 20px;
            background: linear-gradient(90deg, #df5c8e 0%, #53186e 100%);
            color: white;
            border: none;
            border-radius: 50px;
            font-size: 16px;
            font-weight: 600;
            cursor: pointer;
            transition: all 0.3s ease;
            box-shadow: 0 4px 15px rgba(236, 64, 122, 0.3);
            position: relative;
        }

        .btn-login:hover {
            background: linear-gradient(90deg, #df5c8e 0%, #53186e 100%);
            box-shadow: 0 6px 20px rgba(236, 64, 122, 0.4);
            transform: translateY(-2px);
            color: white;
        }

        .btn-login:active {
            transform: translateY(0);
        }

        .btn-login:disabled {
            opacity: 0.65 !important;
            cursor: not-allowed !important;
        }

        .btn-login .btn-text,
        .btn-login .btn-loading {
            display: flex !important;
            align-items: center !important;
            justify-content: center !important;
        }

        .btn-login.loading .btn-text {
            display: none !important;
        }

        .btn-login.loading .btn-loading {
            display: flex !important;
        }

        @keyframes spin {
            0% { transform: rotate(0deg); }
            100% { transform: rotate(360deg); }
        }

        .fa-spinner {
            animation: spin 1s linear infinite !important;
        }

        /* Responsive */
        @media (max-width: 992px) {
            .login-wrapper {
                flex-direction: column;
            }

            .login-image-section {
                min-height: 300px;
            }

            .login-form-section {
                padding: 40px 30px;
            }
        }

        @media (max-width: 576px) {
            .login-form-section {
                padding: 30px 20px;
            }

            .login-header h2 {
                font-size: 24px;
            }

            .login-subtitle {
                font-size: 14px;
            }

            .form-control {
                font-size: 16px !important;
            }

            .password-toggle {
                right: 15px !important;
                font-size: 18px !important;
            }
        }

        .wave-decoration {
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            height: 100px;
            background: linear-gradient(to top, rgba(255, 255, 255, 0.9), transparent);
            pointer-events: none;
        }

        /* ✅ เพิ่ม input-wrapper style */
        .input-wrapper {
            position: relative !important;
            width: 100%;
        }

        .input-wrapper .form-control {
            width: 100%;
            padding: 12px 50px 12px 16px !important;
        }

        .input-wrapper .password-toggle {
            position: absolute !important;
            right: 18px !important;
            top: 50% !important;
            transform: translateY(-50%) !important;
            cursor: pointer !important;
            color: #6c757d !important;
            z-index: 10 !important;
            font-size: 20px !important;
            display: flex !important;
            align-items: center !important;
            justify-content: center !important;
        }

        .input-wrapper .password-toggle:hover {
            color: #c2185b !important;
        }

        .input-wrapper .validation-message {
            position: relative !important;
            margin-top: 8px !important;
        }