:root {
            --primary-color: #1c1d67;
            --accent-color: #99bd43;
            --accent-hover: #8aae34;
        }

        body {
            background: linear-gradient(135deg, #e9eef7 0%, #f5f8fc 100%);
            font-family: "Inter", "Segoe UI", Roboto, sans-serif;
            color: #333;
            min-height: 100vh;
            display: flex;
            flex-direction: column;
        }

        .login-container {
            flex: 1;
            display: flex;
            align-items: center;
            justify-content: center;
            padding: 2rem;
        }

        .login-card {
            background: #fff;
            border: none;
            border-radius: 1rem;
            box-shadow: 0 0 40px rgba(0, 0, 0, 0.08);
            padding: 2.5rem 2rem;
            max-width: 420px;
            width: 100%;
            animation: fadeInUp 0.6s ease;
        }

        @keyframes fadeInUp {
            from {
                opacity: 0;
                transform: translateY(30px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }

        .login-card h2 {
            font-weight: 700;
            color: var(--primary-color);
            text-align: center;
            margin-bottom: 1.5rem;
        }

        .form-floating label {
            color: #555;
        }

        .form-control {
            border-radius: 0.5rem;
            border: 1px solid #ced4da;
            transition: all 0.2s ease;
        }

        .form-control:focus {
            border-color: var(--accent-color);
            box-shadow: 0 0 0 0.2rem rgba(153, 189, 67, 0.25);
        }

        .btn-login {
            background-color: var(--accent-color);
            color: var(--primary-color);
            font-weight: 600;
            padding: 0.75rem;
            border: none;
            border-radius: 0.5rem;
            transition: all 0.3s ease;
        }

        .btn-login:hover {
            background-color: var(--accent-hover);
            transform: translateY(-2px);
            box-shadow: 0 6px 10px rgba(0, 0, 0, 0.15);
        }

        .password-toggle {
            cursor: pointer;
            position: absolute;
            right: 15px;
            top: 50%;
            transform: translateY(-50%);
            color: #6c757d;
        }

        .alert {
            border-radius: 0.5rem;
        }

        .text-muted a {
            color: var(--primary-color);
            text-decoration: none;
        }

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

        .login-footer {
            text-align: center;
            font-size: 0.9rem;
            color: #777;
            padding-bottom: 1rem;
        }

        @media (max-width: 576px) {
            .login-card {
                padding: 1.5rem;
                box-shadow: none;
            }
        }