body {
            margin: 0;
            font-family: 'Inter', sans-serif;
            background: #f4f6f9;
            display: flex;
            align-items: center;
            justify-content: center;
            height: 100vh;
        }
        .card {
            background: #fff;
            padding: 2rem;
            border-radius: 1rem;
            box-shadow: 0 6px 18px rgba(0,0,0,0.1);
            width: 100%;
            max-width: 520px;
        }
        .card h2 {
            margin: 0 0 1.5rem;
            font-weight: 600;
            font-size: 1.5rem;
            color: #3F6416;
            text-align: center;
        }
        .form-group {
            margin-bottom: 1.2rem;
        }
        label {
            display: block;
            font-size: 0.9rem;
            font-weight: 600;
            margin-bottom: 0.4rem;
            color: #404866;
        }
        input {
            width: 100%;
            padding: 0.75rem;
            border: 1px solid #d1d5db;
            border-radius: 0.6rem;
            outline: none;
            font-size: 1rem;
            transition: border 0.3s;
        }
        input:focus {
            border-color: #3F6416;
        }
        .btn {
            width: 100%;
            padding: 0.9rem;
            border: none;
            border-radius: 0.6rem;
            font-size: 1rem;
            font-weight: 600;
            cursor: pointer;
            background: #3F6416;
            color: #fff;
            transition: background 0.3s;
        }
        .btn:hover {
            background: #2e4a10;
        }
        .login-link {
            text-align: center;
            margin-top: 1rem;
            font-size: 0.9rem;
        }
        .login-link a {
            color: #404866;
            text-decoration: none;
            font-weight: 600;
        }
        .login-link a:hover {
            text-decoration: underline;
        }