html, body {
            height: 100%;
            margin: 0;
        }

        body {
            background: linear-gradient(135deg, #371450, #336373);
            color: #fff;
            display: flex;
            flex-direction: column;
            font-family: "Segoe UI", Arial, sans-serif;
        }

        .main-content {
            flex: 1;
            display: flex;
            align-items: center;
            justify-content: center;
            padding: 30px 15px;
        }

        .login-card {
            width: 100%;
            max-width: 420px;
            background: rgba(30, 41, 59, 0.88);
            backdrop-filter: blur(10px);
            -webkit-backdrop-filter: blur(10px);
            border-radius: 20px;
            padding: 35px 30px;
            box-shadow: 0 20px 45px rgba(0, 0, 0, 0.35);
            border: 1px solid rgba(255, 255, 255, 0.08);
        }

        .login-logo {
            width: 90px;
            height: auto;
            display: block;
            margin: 0 auto 15px auto;
        }

        .login-card h3 {
            text-align: center;
            margin-bottom: 10px;
            font-weight: 700;
            color: #ffffff;
        }

        .login-card .subtitle {
            text-align: center;
            color: #cbd5e1;
            margin-bottom: 25px;
            font-size: 14px;
        }

        .form-label {
            color: #e2e8f0;
            font-size: 14px;
            margin-bottom: 6px;
            font-weight: 600;
        }

        .form-control {
            background: rgba(51, 65, 85, 0.9);
            border: 1px solid rgba(255, 255, 255, 0.08);
            color: #fff;
            height: 48px;
            border-radius: 12px;
        }

        .form-control:focus {
            background: rgba(51, 65, 85, 0.95);
            color: #fff;
            border-color: #10b981;
            box-shadow: 0 0 0 0.2rem rgba(16, 185, 129, 0.20);
        }

        .form-control::placeholder {
            color: #94a3b8;
        }

        .btn-login {
            background: linear-gradient(to right, #99b1b9, #336373);
            border: none;
            padding: 12px;
            font-weight: 700;
            border-radius: 12px;
            color: #fff;
            transition: 0.3s ease;
        }

        .btn-login:hover {
            background: linear-gradient(to right, #336373, #003C50);
            transform: translateY(-1px);
            color: #fff;
        }

        .bottom-text {
            font-size: 12px;
            text-align: center;
            color: #cbd5e1;
            margin-top: 18px;
        }

        .bottom-text a {
            color: #34d399;
            text-decoration: none;
            font-weight: 600;
        }

        .bottom-text a:hover {
            text-decoration: underline;
        }

        .custom-footer {
            text-align: center;
            padding: 20px 15px 25px;
            color: #d1d5db;
            font-size: 13px;
        }

        .custom-footer a {
            color: #86efac;
            text-decoration: none;
            margin: 0 10px;
            font-weight: 500;
        }

        .custom-footer a:hover {
            text-decoration: underline;
        }

        @media (max-width: 576px) {
            .login-card {
                padding: 28px 20px;
            }

            .login-logo {
                width: 75px;
                margin-bottom: 12px;
            }

            .custom-footer a {
                display: inline-block;
                margin: 5px 8px;
            }
        }