body {
            background-image: url("../images/trademark/IP-LEADER-logo_whitebackground-logo-horizontal.png");
            background-size: 100% auto;
            background-position: center;
            background-repeat: no-repeat;
            min-height: 100vh;
            font-family: Arial, sans-serif;
            display: flex;
            align-items: center;
            justify-content: center;
        }

/* BACKGROUND BLUR */
        body::before {
            content: "";
            position: fixed;
            inset: 0;

            background-image: url("{% static 'images/trademark/IP-LEADER-logo_whitebackground-logo-horizontal.png' %}");
            background-size: contain;
            background-repeat: no-repeat;
            background-position: center;

            filter: blur(6px);
            opacity: 0.6;
            transform: scale(1.1); /* tránh viền trắng khi blur */
            z-index: -1;
        }

        /* LỚP PHỦ TỐI NHẸ */
        body::after {
            content: "";
            position: fixed;
            inset: 0;
            background: rgba(255, 255, 255, 0.6);
            z-index: -1;
        }
        .login-wrapper {
            width: 100%;
            max-width: 420px;
            background: white;
            border-radius: 10px;
            box-shadow: 0 15px 40px rgba(0,0,0,0.3);
            overflow: hidden;
            animation: fadeIn 0.6s ease;
        }

        @keyframes fadeIn {
            from {
                opacity: 0;
                transform: translateY(20px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }

        .login-header {
            background: #BE1E2D;
            color: white;
            padding: 25px;
            text-align: center;
        }

        .login-header h1 {
            font-size: 22px;
            font-weight: bold;
            margin-bottom: 5px;
            letter-spacing: 1px;
        }

        .login-header p {
            font-size: 13px;
            opacity: 0.9;
            margin: 0;
        }

        .login-body {
            padding: 30px;
        }

        .form-control {
            height: 45px;
            font-size: 14px;
        }

        .btn-login {
            background: #BE1E2D;
            color: white;
            font-weight: 600;
            padding: 10px;
            width: 100%;
            border: none;
            border-radius: 5px;
            transition: 0.3s;
        }

        .btn-login:hover {
            background: #8B0000;
        }

        .error-message {
            background: #f8d7da;
            color: #842029;
            padding: 10px 15px;
            border-radius: 5px;
            font-size: 13px;
            margin-bottom: 15px;
        }

        .login-footer {
            text-align: center;
            font-size: 12px;
            color: #6c757d;
            padding: 15px 20px;
            border-top: 1px solid #dee2e6;
        }