body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: #f5faff;
    margin: 0;
    padding: 20px;
    color: #00334d;
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

.header {
    font-size: 1.4em;
    font-weight: 600;
    margin-bottom: 10px;
    color: #00334d;
}

form {
    background-color: #e1f3ff;
    padding: 18px 22px;
    margin-bottom: 30px;
    border-radius: 14px;
    box-shadow: 0 4px 12px rgba(0, 85, 136, 0.1);
    display: flex;
    flex-wrap: wrap;
    gap: 16px;
    align-items: center;
}

select,
input[type="submit"] {
    padding: 10px 14px;
    font-size: 1em;
    border-radius: 8px;
    border: 1px solid #a0d4ea;
    background-color: #f8fcff;
    color: #002e4d;
    font-weight: 500;
    box-shadow: inset 0 1px 2px rgba(0, 0, 0, 0.05);
    transition: all 0.2s ease-in-out;
}

select:focus,
input[type="submit"]:focus {
    outline: 2px solid #66bfff;
    outline-offset: 2px;
}

select:hover,
input[type="submit"]:hover {
    border-color: #66bfff;
    background-color: #eef9ff;
    color: #001f33;
}


@media (max-width: 600px) {
    form {
        flex-direction: column;
        align-items: stretch;
    }

    select,
    .button-blue {
        width: 100%;
    }
}