* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    background-color: #ffffff;
    font-family: Arial, Helvetica, sans-serif;
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    padding: 20px;
}

.registration_form {
    background-color: #ecf7fc;
    border: 3px solid #3b3b3b;
    padding: 28px 28px 24px 28px;
    width: 400px;
}

.form_group {
    margin-bottom: 16px;
}

.form_group label {
    display: block;
    font-family: Arial, Helvetica, sans-serif;
    font-weight: bold;
    font-size: 11pt;
    color: #3b3b3b;
    margin-bottom: 5px;
}

.form_group input {
    display: block;
    width: 100%;
    padding: 6px 8px;
    font-family: Arial, Helvetica, sans-serif;
    font-size: 10pt;
    color: #3b3b3b;
    background-color: #ffffff;
    border: 1px solid #b0c8d4;
    border-radius: 0;
    outline: none;
    box-shadow: inset 0 1px 3px rgba(0, 0, 0, 0.08);
    transition: border-color 0.2s ease;
    height: 32px;
}

.form_group input:focus {
    border-color: #5a9ab5;
    box-shadow: inset 0 1px 3px rgba(0, 0, 0, 0.1), 0 0 0 2px rgba(90, 154, 181, 0.25);
}


/* .form_group input:invalid:not(:placeholder-shown) {
    border-color: #c0392b;
    box-shadow: inset 0 1px 3px rgba(192, 57, 43, 0.1);
}

.form_group input:valid:not(:placeholder-shown) {
    border-color: #27ae60;
} */


.form_actions {
    margin-top: 20px;
    text-align: center;
}

.btn_create {
    font-family: Arial, Helvetica, sans-serif;
    font-weight: bold;
    font-size: 11pt;
    color: #3b3b3b;
    background-color: #ecf7fc;
    border: 3px solid #b0c8d4;
    border-radius: 20px;
    padding: 8px 36px;
    cursor: pointer;
    letter-spacing: 0.01em;
    transition: background-color 0.2s ease, box-shadow 0.2s ease;
}

.btn_create:hover {
    background-color: #ccdde8;
    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.15);
}

.btn_create:focus {
    outline: 2px solid #5a9ab5;
    outline-offset: 3px;
}

.btn_create:active {
    background-color: #b8cfd9;
    box-shadow: inset 0 1px 3px rgba(0, 0, 0, 0.15);
}