.auth-container {
    max-width: 400px;
    margin: 40px auto;
    padding: 20px;
    border: 1px solid var(--shadow-color);
    border-radius: 8px;
}
.auth-container h2 {
    text-align: center;
    margin-top: 0;
}
.form-group {
    margin-bottom: 15px;
}
.form-group label {
    display: block;
    margin-bottom: 5px;
    font-weight: bold;
}
.form-group input {
    width: 100%;
    padding: 8px;
    box-sizing: border-box;
    border: 1px solid var(--form-border-color);
    border-radius: 4px;
    background-color: var(--container-bg);
    color: var(--text-color);
}
.form-group button {
    width: 100%;
    padding: 10px;
    background-color: var(--nav-bg);
    color: var(--nav-text);
    border: none;
    border-radius: 4px;
    cursor: pointer;
    font-size: 1em;
}
.form-group button:hover {
    opacity: 0.9;
}
.alert {
    padding: 10px;
    margin-bottom: 15px;
    border-radius: 4px;
}
.alert-danger {
    background-color: var(--alert-danger-bg);
    color: var(--alert-danger-text);
    border: 1px solid var(--alert-danger-border);
}
.alert-success {
    background-color: var(--alert-success-bg);
    color: var(--alert-success-text);
    border: 1px solid var(--alert-success-border);
}
.auth-link {
    text-align: center;
    margin-top: 20px;
}

/* Specific style for register form errors (Moved from .view.php) */
.form-error {
    color: var(--alert-danger-text);
    font-size: 0.85em;
    display: block;
    margin-top: 4px;
}