body {
    margin: 0;
    font-family: Arial, Helvetica, sans-serif;
    background: linear-gradient(135deg, #0f2027, #203a43, #2c5364);
    height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
}

.login-container {
    background: #fff;
    padding: 40px;
    width: 350px;
    text-align: center;
    border-radius: 10px;
    box-shadow: 0 10px 25px rgba(0,0,0,0.3);
}

.logo {
    width: 90px;
    margin-bottom: 15px;
}

h2 {
    margin: 10px 0 5px;
    color: #203a43;
}

.subtitle {
    font-size: 13px;
    color: #777;
    margin-bottom: 25px;
}

input {
    width: 100%;
    padding: 10px;
    margin-bottom: 15px;
    border-radius: 5px;
    border: 1px solid #ccc;
}

button {
    width: 100%;
    padding: 10px;
    background: #203a43;
    color: #fff;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    font-weight: bold;
}

button:hover {
    background: #0f2027;
}

.error {
    background: #ffdddd;
    color: #a00;
    padding: 10px;
    margin-bottom: 15px;
    border-radius: 5px;
}

.footer {
    margin-top: 20px;
    font-size: 11px;
    color: #999;
}