body {
    background-color: #f8f9fa;
    min-height: 100vh;
}
.registration-container {
    max-width: 500px;
    margin: 40px auto;
    padding: 30px;
    background: white;
    border-radius: 10px;
    box-shadow: 0 0 20px rgba(0,0,0,0.1);
}
.form-title {
    text-align: center;
    color: #0056b3;
    margin-bottom: 30px;
}
.form-floating {
    margin-bottom: 20px;
}
.form-control:focus {
    border-color: #0056b3;
    box-shadow: 0 0 0 0.2rem rgba(0,86,179,0.25);
}
.invalid-feedback {
    display: block;
    font-size: 0.875em;
}
.password-requirements {
    font-size: 0.875em;
    color: #6c757d;
    margin-top: 5px;
    padding-left: 0;
    list-style: none;
}
.password-requirements li {
    margin-bottom: 3px;
}
.password-requirements li i {
    margin-right: 5px;
}
.password-requirements li.valid {
    color: #198754;
}
.password-requirements li.invalid {
    color: #dc3545;
}
.btn-register {
    background-color: #0056b3;
    color: white;
    padding: 12px 30px;
    border: none;
    border-radius: 25px;
    width: 100%;
    margin-top: 20px;
    transition: all 0.3s ease;
}
.btn-register:hover {
    background-color: #004494;
    transform: translateY(-2px);
}
.login-link {
    text-align: center;
    margin-top: 20px;
    color: #6c757d;
}
.login-link a {
    color: #0056b3;
    text-decoration: none;
}
.login-link a:hover {
    text-decoration: underline;
}
.input-group-text {
    cursor: pointer;
    user-select: none;
}