:root {
            --blue: #1E5DAC;
            --alley: #B7C5DA;
            --misty: #EAE2E4;
            --white: #ffffff;
        }

        html,
        body {
            height: 100%;
        }

        body.bg-light {
            background-image: url("../images/background/bg_login.jpg");
            background-repeat: no-repeat;
            background-position: center;
            background-size: cover;
            background-attachment: fixed;
            font-family: "Poppins", sans-serif;
            position: relative;
        }

        body.bg-light::before {
            content: "";
            position: fixed;
            inset: 0;
            background: linear-gradient(135deg,
                    rgba(30, 93, 172, 0.45),
                    rgba(183, 197, 218, 0.35));
            z-index: -1;
        }

        .center-box {
            padding-top: 60px;
            padding-bottom: 80px;
        }

        .card {
            border-radius: 22px;
            background: rgba(234, 226, 228, 0.40);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border: 1px solid rgba(255, 255, 255, 0.45);
            box-shadow: 0 25px 50px rgba(30, 93, 172, 0.35);
        }

        .login-logo {
            width: 160px;
            filter: drop-shadow(0 6px 12px rgba(30, 93, 172, 0.5));
        }

        .card h4 {
            color: var(--blue);
            font-weight: 700;
            letter-spacing: 0.6px;
        }

        .form-label {
            color: #2d3a4a;
            font-weight: 500;
        }

        .form-control {
            border-radius: 12px;
            padding: 12px 14px;
            border: none;
            background: var(--white);
        }

        .form-control:focus {
            box-shadow: 0 0 0 3px rgba(30, 93, 172, 0.25);
        }

        .btn-login {
            background: linear-gradient(135deg,
                    var(--blue),
                    var(--alley));
            border: none;
            border-radius: 14px;
            padding: 12px;
            font-weight: 600;
            color: #fff;
            transition: 0.3s ease;
        }

        .btn-login:hover {
            background: linear-gradient(135deg,
                    var(--alley),
                    var(--blue));
            transform: translateY(-2px);
            box-shadow: 0 10px 25px rgba(30, 93, 172, 0.45);
        }

        .small a {
            color: var(--blue);
            text-decoration: none;
            transition: 0.2s;
        }

        .small a:hover {
            color: #000;
            font-weight: 600;
        }