body {
    margin: 0;
    font-family: "Segoe UI", Tahoma, sans-serif;
    background: linear-gradient(135deg, #1e1e2f, #282c34);
    color: #fff;
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
}

.login-container {
    background: #2c2f45;
    padding: 40px;
    border-radius: 12px;
    box-shadow: 0 6px 20px rgba(0,0,0,0.3);
    width: 350px;
    text-align: center;
}

.login-container h1 {
    margin-bottom: 30px;
    font-size: 28px;
    color: #fff;
}

.login-container input[type="text"],
.login-container input[type="password"] {
    width: 100%;
    padding: 12px;
    margin: 10px 0;
    border-radius: 6px;
    border: none;
    font-size: 14px;
}

.login-container input[type="checkbox"] {
    margin-right: 8px;
}

.login-container button {
    width: 100%;
    padding: 12px;
    margin-top: 15px;
    border: none;
    border-radius: 6px;
    background: #007bff;
    color: #fff;
    font-size: 16px;
    cursor: pointer;
    transition: background 0.3s, transform 0.2s;
}

.login-container button:hover {
    background: #0056b3;
    transform: translateY(-2px);
}

.error {
    background: #dc3545;
    color: #fff;
    padding: 10px;
    border-radius: 6px;
    margin-bottom: 10px;
    font-size: 14px;
}

.remember {
    text-align: left;
    margin-top: 5px;
    font-size: 14px;
}