body {
            background: linear-gradient(135deg, #6a11cb, #2575fc);
            min-height: 100vh;
            display: flex;
            justify-content: center;
            align-items: center;
            font-family: 'Open Sans', sans-serif;
        }
        .login-card {
            background: rgba(255, 255, 255, 0.12);
            backdrop-filter: blur(12px);
            padding: 2.5rem;
            border-radius: 15px;
            box-shadow: 0 8px 25px rgba(0, 0, 0, 0.2);
            width: 100%;
            max-width: 400px;
            animation: fadeIn 0.6s ease-in-out;
        }
        .login-card h3 {
            color: white;
            text-align: center;
            margin-bottom: 1.8rem;
        }
        .form-floating input {
            background-color: rgba(255, 255, 255, 0.9);
            border-radius: 10px;
            border: none;
            box-shadow: none;
            padding-left: 0.8rem;
        }
        .form-floating input:focus {
            outline: none;
            box-shadow: 0 0 10px rgba(138, 43, 226, 0.7);
        }
        .btn-custom {
            background: #8a2be2;
            border: none;
            padding: 0.75rem;
            border-radius: 10px;
            color: white;
            font-weight: bold;
            transition: transform 0.2s ease, background 0.3s ease;
        }
        .btn-custom:hover {
            background: #6b1db7;
            transform: translateY(-3px) scale(1.03);
        }
        @keyframes fadeIn {
            from { opacity: 0; transform: translateY(-20px); }
            to { opacity: 1; transform: translateY(0); }
        }
        small.text-light {
            display: block;
            margin-top: -10px;
            margin-bottom: 10px;
            font-size: 0.8rem;
        }