body {
    font-family: 'Inter', sans-serif;
    background-color: #f0f2f5;
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    margin: 0;
}
.login-container {
    background-color: #ffffff;
    padding: 40px;
    border-radius: 12px;
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.15);
    width: 100%;
    max-width: 450px;
    text-align: center;
}
h1 {
    color: #333;
    margin-bottom: 30px;
    font-weight: 700;
}
.btn-social {
    width: 100%;
    margin-bottom: 15px;
    padding: 12px 20px;
    border-radius: 8px;
    font-size: 1.1rem;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background-color 0.3s ease, transform 0.2s ease;
}
.btn-social:hover {
    transform: translateY(-2px);
}
.btn-google {
    background-color: #db4437;
    color: white;
    border: none;
}
.btn-google:hover {
    background-color: #c23321;
}
.btn-github {
    background-color: #333;
    color: white;
    border: none;
}
.btn-github:hover {
    background-color: #000;
}
.btn-email {
    background-color: #4285f4;
    color: white;
    border: none;
}
.btn-email:hover {
    background-color: #357ae8;
}
.btn-social i {
    margin-right: 10px;
    font-size: 1.2em;
}
.form-control {
    border-radius: 8px;
    padding: 12px;
    margin-bottom: 15px;
}
.alert {
    border-radius: 8px;
    margin-top: 20px;
}
#emailLoginForm {
    display: none; /* Hidden by default */
    margin-top: 20px;
    padding-top: 20px;
    border-top: 1px solid #eee;
}
.loading-spinner {
    display: none; /* Hidden by default */
    margin-top: 20px;
}